Patent Publication Number: US-2022238420-A1

Title: Electronic device, method for manufacturing electronic device, and lead frame

Description:
FIELD 
     The present disclosure relates to an electronic device, a method for manufacturing an electronic device, and a lead frame. 
     BACKGROUND 
     Conventionally, a semiconductor device that is manufactured using a lead frame has been known as an example of various kinds of electronic devices. One example of such a semiconductor device is described in JP-A-2012-222185, for example. The conventional semiconductor device disclosed in the above JP document includes a semiconductor chip, a die pad, a bonding portion, a lead, a connection member (wire), and a sealing resin. The semiconductor chip is mounted on a die pad. The bonding portion and the lead are formed integrally and are spaced apart from the die pad. The two end portions of the wire are respectively bonded to the semiconductor chip and the bonding portion. The sealing resin covers the semiconductor chip, the die pad, the bonding portion, and the wire. 
     The wire is bonded to the bonding portion through wedge bonding. In wedge bonding, pressure and vibration are applied to the end portions of the wire. The pressure and the vibration are also applied to the bonding portion (target to be bonded to). At this time, there is a risk that bonding of the wire cannot be suitably performed due to the bonding portion shaking or deforming. 
     SUMMARY 
     In view of the foregoing circumstance, the present disclosure aims to provide an electronic device according to which a connection member can be suitably bonded to a target. The present disclosure also aims to provide a method for manufacturing such an electronic device, and a lead frame used for the manufacturing method. 
     According to an aspect of the present disclosure, there is provided an electronic device comprising: an electronic component provided with a first electrode pad; a die pad including an obverse surface facing in a first direction, the electronic component being mounted on the obverse surface; a first lead spaced apart from the die pad; a second lead spaced apart from the die pad and the first lead; and a first connection member electrically connecting the first electrode pad and the first lead to each other. The first lead and the second lead are disposed, as viewed in the first direction, on a same side of the die pad in a second direction perpendicular to the first direction. The first lead includes a first pad portion and a first extended portion. The first connection member is bonded to the first pad portion. The first extended portion extends from the first pad portion up to a position located between the die pad and the second lead as viewed in the first direction. 
     Other features and advantages of the present disclosure will become clear through the following detailed description given with reference to the attached drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a plan view showing an electronic device according to a first embodiment of a first aspect. 
         FIG. 2  is a plan view showing the electronic device according to the first embodiment on the first aspect, viewed through a resin member. 
         FIG. 3  is an enlarged view showing a portion of  FIG. 2 . 
         FIG. 4  is a front view showing the electronic device according to the first embodiment of the first aspect. 
         FIG. 5  is a front view showing the electronic device according to the first embodiment of the first aspect, viewed through a resin member. 
         FIG. 6  is a side view showing the electronic device according to the first embodiment of the first aspect. 
         FIG. 7  is a schematic cross-sectional view showing an electronic component of the first embodiment of the first aspect. 
         FIG. 8  is a circuit diagram for illustrating the electronic device according to the first embodiment of the first aspect. 
         FIG. 9  is a plan view showing one step of a method for manufacturing the electronic device according to the first embodiment of the first aspect. 
         FIG. 10  is a plan view showing one step of the method for manufacturing the electronic device according to the first embodiment of the first aspect. 
         FIG. 11  is a plan view showing one step of the method for manufacturing the electronic device according to the first embodiment of the first aspect. 
         FIG. 12  is a perspective view showing one step of the method for manufacturing the electronic device according to the first embodiment of the first aspect. 
         FIG. 13  is a plan view showing one step of the method for manufacturing the electronic device according to the first embodiment of the first aspect. 
         FIG. 14  is a plan view showing an electronic device according to a second embodiment of the first aspect. 
         FIG. 15  is a schematic cross-sectional view showing an electronic component of the second embodiment of the first aspect. 
         FIG. 16  is a schematic cross-sectional view showing a variation of the electronic component according to the first aspect. 
         FIG. 17  is a schematic cross-sectional view showing another variation of the electronic component according to the first aspect. 
         FIG. 18  is a plan view showing still another variation of the electronic device according to the first aspect. 
         FIG. 19  is a plan view showing an electronic device according to a first embodiment of a second aspect. 
         FIG. 20  is a plan view showing the electronic device according to the first embodiment of the second aspect, viewed through a resin member. 
         FIG. 20A  is a plan view showing a portion of a variation of the electronic device shown in  FIG. 20 . 
         FIG. 20B  is a plan view showing a portion of another variation of the electronic device shown in  FIG. 20 . 
         FIG. 20C  is a plan view showing a portion of still another variation of the electronic device shown in  FIG. 20 . 
         FIG. 21  is an enlarged view showing a portion of  FIG. 20 . 
         FIG. 22  is a cross-sectional view taken along line XXII-XXII in  FIG. 21 . 
         FIG. 23  is a front view showing the electronic device according to the first embodiment of the second aspect. 
         FIG. 24  is a front view showing the electronic device according to the first embodiment of the second aspect, viewed through a resin member. 
         FIG. 25  is a side view showing the electronic device according to the first embodiment of the second aspect. 
         FIG. 26  is a schematic cross-sectional view showing an electronic component of the first embodiment of the second aspect. 
         FIG. 27  is a circuit diagram for illustrating the electronic device according to the first embodiment of the second aspect. 
         FIG. 28  is a plan view showing one step of the method for manufacturing the electronic device according to the first embodiment of the second aspect. 
         FIG. 29  is a plan view showing one step of the method for manufacturing the electronic device according to the first embodiment of the second aspect. 
         FIG. 30  is a plan view showing one step of the method for manufacturing the electronic device according to the first embodiment of the second aspect. 
         FIG. 31  is a perspective view showing one step of the method for manufacturing the electronic device according to the first embodiment of the second aspect. 
         FIG. 32  is a plan view showing one step of the method for manufacturing the electronic device according to the first embodiment of the second aspect. 
         FIG. 33  is a plan view showing one step of the method for manufacturing the electronic device according to the first embodiment of the second aspect. 
         FIG. 34  is a plan view showing a portion of an electronic device according to a second embodiment of the second aspect. 
         FIG. 35  is a plan view showing a portion of an electronic device according to a third embodiment of the second aspect. 
         FIG. 36  is a plan view showing a portion of an electronic device according to a fourth embodiment of the second aspect. 
         FIG. 37  is a plan view showing a portion of an electronic device according to a fifth embodiment of the second aspect. 
         FIG. 38  is a plan view showing one step of the method for manufacturing the electronic device according to the fifth embodiment of the second aspect. 
     
    
    
     EMBODIMENTS 
     Various configurations based on first and second aspects of the present disclosure will be described hereinafter with reference to the drawings. Note that identical or similar configurational elements are denoted by identical reference numerals, and redundant description thereof is omitted as appropriate. 
     In the present disclosure, the phrases “a certain object A is formed on a certain object B” and “a certain object A is formed above a certain object B” include “a certain object A being formed directly on a certain object B” and “a certain object A being formed on a certain object B with another object interposed between the certain object A and the certain object B”, unless otherwise specified. Similarly, the phrases “a certain object A is arranged on a certain object B” and “a certain object A is arranged above a certain object B” include “a certain object A being arranged directly on a certain object B” and “a certain object A being arranged on a certain object B with another object interposed between the certain object A and the certain object B”, unless otherwise specified. Similarly, the phrase “a certain object A is located above a certain object B” includes “a certain object A being located on a certain object B, the certain object A being in contact with the certain object B” and “a certain object A being located above a certain object B with another object interposed between the certain object A and the certain object B”, unless otherwise specified. Similarly, the phrases “a certain object A is stacked on a certain object B” and “a certain object A is stacked above a certain object B” include “a certain object A being stacked directly on a certain object B” and “a certain object A being stacked on a certain object B with another object interposed between the certain object A and the certain object B”, unless otherwise specified. Also, the phrase “a certain object A overlapping with a certain object B when viewed in a certain direction” includes “a certain object A overlapping with all of a certain object B” and “a certain object A overlapping with a portion of a certain object B”, unless otherwise specified. 
       FIGS. 1 to 7  show an electronic device based on a first embodiment of a first aspect. An electronic device A 1  shown in the drawings is surface-mounted on a circuit board for various electronic apparatuses and the like. The electronic device A 1  is, for example, a package called an SOP (Small Outline Package). The electronic device A 1  is, for example, a power source IC. The electronic device A 1  includes an electronic component  1 , a lead frame  4 , connection members  5 , and a resin member  6 . The connection members  5  are, for example, wires. However, the present disclosure is not necessarily limited thereto. In  FIG. 2 , the resin member  6  shown in  FIG. 1  is indicated by an imaginary line (two-dot chain line). In  FIG. 5 , the resin member  6  shown in  FIG. 4  is indicated by an imaginary line. In  FIG. 5 , the connection members  5  are omitted.  FIG. 6  is a left-side view of the electronic device A 1 .  FIG. 7  is a schematic cross-sectional view showing the electronic component  1  (first semiconductor elements  2 A and  2 B). 
     For the sake of convenience in the description, in  FIGS. 1 to 7 , three directions that are perpendicular to each other are an x direction, a y direction, and a z direction. The z direction corresponds to the thickness direction of the electronic device A 1 . In the following description, one direction (or sense) in the z direction (up in  FIG. 4 ) will be called upward, and the other direction in the z direction (down in  FIG. 4 ) will be called downward in some cases, but the orientation of the electronic device A 1  is not limited. The same applies also to the other electronic devices according to the present disclosure. Further, the z direction may be referred to as a “first direction”, the y direction as a “second direction” and the x direction as a “third direction” as appropriate. 
     The electronic component  1  is the functional center of the electronic device A 1 . The electronic component  1  is bonded to the lead frame  4  (die pad  46 ) via a bonding material. The electronic component  1  includes two first semiconductor elements  2 A and  2 B and a second semiconductor element  3 . 
     The first semiconductor elements  2 A and  2 B are, for example, MOSFETs, but there is no limitation thereto, and the first semiconductor elements  2 A and  2 B may also be other transistors (e.g., bipolar transistors, IGBT, etc.), or diodes. 
     As shown in  FIGS. 2 and 7 , the first semiconductor element  2 A includes a first semiconductor substrate  21 A, a wiring layer  23 A, an insulating protective film  24 A, and electrode pads  251 A and  252 A. 
     The semiconductor substrate  21 A is composed of, for example, a semiconductor material such as Si (silicon), SiC (silicon carbide), GaN (gallium nitride), and Ga 2 O 3  (gallium oxide). As shown in  FIG. 7 , the semiconductor substrate  21 A includes a substrate main (or obverse) surface  211 A and a substrate underside (or reverse) surface  212 A. The substrate main surface  211 A and the substrate underside surface  212 A are spaced apart from each other in the z direction. The substrate main surface  211 A faces upward in the z direction. The substrate underside surface  212 A faces downward in the z direction. 
     As shown in  FIG. 7 , a first active region  220 A is formed on the substrate main surface  211 A side of the semiconductor substrate  21 A. The active region  220 A includes semiconductor regions  221 A,  222 A, and  223 A. The semiconductor regions  221 A are, for example, drain regions. The semiconductor regions  222 A are, for example, source regions. The semiconductor regions  223 A are, for example, gate regions (first control regions). 
     As shown in  FIG. 7 , the wiring layer  23 A is formed above the substrate main surface  211 A of the semiconductor substrate  21 A. For example, in the wiring layer  23 A, conductive layers  231  and insulating layers  232  are stacked alternatingly on each other. The conductive layers  231  are electrically connected via vias  233  that are formed so as to penetrate through the insulating layers  232 . The wiring layer  23 A shown in  FIG. 7  is one example, and the present disclosure is not limited thereto. 
     As shown in  FIG. 7 , the protective layer  24 A is formed above the wiring layer  23 A and covers the upper surface of the wiring layer  23 A. As shown in  FIG. 2 , openings are formed in portions of the protective layer  24 A, and the electrode pads  251 A and  252 A are exposed from the openings. The protective layer  24 A is, for example, an Si 3 Ni 4  layer or an SiO 2  layer that is formed through plasma CVD, or a polyimide resin layer that is formed through coating. Alternatively, the protective layer  24 A may also be formed through a combination of plasma CVD and coating. 
     The electrode pads  251 A and  252 A are terminals of the first semiconductor element  2 A. The electrode pads  251 A are electrically connected to the semiconductor regions  221 A via the wiring layer  23 A. The electrode pads  251 A are drain terminals of the first semiconductor element  2 A. Some of the connection members  5  (e.g. wires  51 ) are bonded to the electrode pads  251 A. The electrode pad  252 A is electrically connected to the semiconductor regions  222 A via the wiring layer  23 A. The electrode pad  252 A is the source terminal of the first semiconductor element  2 A. One of the connection members  5  (wire  53 ) is bonded to the electrode pad  252 A. 
     As shown in  FIGS. 2 and 7 , the first semiconductor element  2 B includes a semiconductor substrate  21 B, a wiring layer  23 B, a protective film  24 B, and electrode pads  251 B and  252 B. 
     The semiconductor substrate  21 B is composed of, for example, a semiconductor material such as Si (silicon), SiC (silicon carbide), GaN (gallium nitride), and Ga 2 O 3  (gallium oxide). As shown in  FIG. 7 , the semiconductor substrate  21 B includes a substrate main surface  211 B and a substrate underside surface  212 B. The substrate main surface  211 B and the substrate underside surface  212 B are spaced apart from each other in the z direction. The substrate main surface  211 B faces upward in the z direction. The substrate underside surface  212 B faces downward in the z direction. 
     As shown in  FIG. 7 , a second active region  220 B is formed on the substrate main surface  211 B side of the semiconductor substrate  21 B. The active region  220 B includes semiconductor regions  221 B,  222 B, and  223 B. The semiconductor regions  221 B are, for example, drain regions. The semiconductor regions  222 B are, for example, source regions. The semiconductor regions  223 B are, for example, gate regions (second control regions). 
     In the example shown in  FIG. 7 , the respective semiconductor regions  221 A may correspond to a “first semiconductor region”, the respective semiconductor regions  222 B to a “second semiconductor region”, the respective semiconductor regions  222 A to a “third semiconductor region”, and the respective semiconductor regions  221 B to a “fourth semiconductor region”, for example. 
     As shown in  FIG. 7 , the wiring layer  23 B is formed above the substrate main surface  211 B of the semiconductor substrate  21 B. The wiring layer  23 B can be constituted similarly to the wiring layer  23 A. That is, for example, in the wiring layer  23 B, conductive layers  231  and insulating layers  232  are stacked alternatingly on each other. The conductive layers  231  are electrically connected via vias  233  that are formed so as to penetrate through the insulating layers  232 . Note that the wiring layer  23 B shown in  FIG. 7  is one example, and the present disclosure is not limited thereto. 
     As shown in  FIG. 7 , the protective film  24 B is formed on the wiring layer  23 B and covers the upper surface of the wiring layer  23 B. As shown in  FIG. 2 , openings are formed in portions of the protective film  24 B, and electrode pads  251 B and  252 B are exposed from the openings. The protective layer  24 B is, for example, an Si 3 Ni 4  layer or an SiO 2  layer that is formed through plasma CVD, or a polyimide resin layer that is formed through coating. Alternatively, the protective layer  24 A may also be formed through a combination of plasma CVD and coating. The protective film  24 A and the protective film  24 B may also be formed in one piece. 
     The electrode pads  251 B and  252 B are terminals of the first semiconductor element  2 B. The electrode pad  251 B is electrically connected to the semiconductor regions  221 B via the wiring layer  23 B. The electrode pad  251 B is the drain terminal of the first semiconductor element  2 B. One of the connection members  5  (wire  54 ) is bonded to the electrode pad  251 B. The electrode pads  252 B are electrically connected to the semiconductor regions  222 B via the wiring layer  23 B. The electrode pads  252 B are the source terminals of the first semiconductor element  2 B. Some of the connection members  5  (wires  52 ) are bonded to the electrode pads  252 B. 
     In the present disclosure, the respective electrode pads  251 A may be referred to as a “first electrode pad”, the respective electrode pads  252 B as a “second electrode pad”, and the respective electrode pads  252 A,  251 B as a “third electrode pad”, for example. 
     A second semiconductor element  3  is, for example, a control IC. The second semiconductor element  3  performs drive control of the first semiconductor elements  2 A and  2 B. The second semiconductor element  3  is electrically connected to the first semiconductor elements  2 A and  2 B. For example, the second semiconductor element  3  is electrically connected to the semiconductor regions  223 A (gate regions) of the first semiconductor element  2 A and controls the first semiconductor element  2 A by outputting control signals to the semiconductor regions  223 A (gate regions). Similarly, the second semiconductor element  3  is electrically connected to the semiconductor regions  223 B (gate regions) of the first semiconductor element  2 B and controls the first semiconductor element  2 B by outputting control signals to the semiconductor regions  223 B (gate regions). 
     The second semiconductor element  3  has an element main surface  301  that faces upward in the z direction. The element main surface  301  is covered by a protective film  32  that is similar to the protective films  24 A and  24 B. Openings are formed in portions of the protective film  32 , and electrode pads  31  are exposed from the open portions. In the example shown in the drawings, electrode pads  31  are formed on the second semiconductor element  3 . 
     Some of the connection members  5  (wires  55 ) are connected to the electrode pads  31 . 
     The lead frame  4  forms a conductive path between the electronic component  1  and a circuit board for electronic apparatuses and the like, due to the electronic device A 1  being mounted on the circuit board. The lead frame  4  supports the electronic component  1 . The constituent material of the lead frame  4  is, for example, Cu (copper), or a Cu alloy. The lead frame  4  can be formed of a metal plate. The plate thickness of the metal plate is, for example, about 0.2 mm. For example, Ni plating is applied to the outer surface of the lead frame  4 . As shown in  FIG. 2 , the lead frame  4  includes a lead  41 , a lead  42 , a lead  43 , a lead  44 , leads  45 , and a die pad  46 . The lead  41 , the lead  42 , the lead  43 , the lead  44 , the leads  45 , and the die pad  46  are spaced apart from each other. 
     As shown in  FIGS. 2 and 3 , the lead  41  includes two terminal portions  411 , a pad portion  412 , and an extended portion  413 . Portions of the terminal portions  411  are exposed from the resin member  6 . Each terminal portion  411  is connected to the pad portion  412  at a portion covered by the resin member  6 . Each terminal portion  411  is bent in the z direction at a portion exposed from the resin member  6 . Some of the connection members  5  (wires  51 ) are bonded to the pad portion  412 . The extended portion  413  extends from the pad portion  412 . In the example shown in the drawings, the extended portion  413  extends from the edge of the pad portion  412  that opposes the lead  42 . Ina plan view (i.e. as viewed in the z direction), the extended portion  413  extends from the pad portion  412  to the space between the lead  42  and the die pad  46 . 
     As shown in  FIG. 3 , in the lead  41 , the pad portion  412  has a main surface  412   a  that faces upward in the z direction. The extended portion  413  has an extended surface  413   a  that faces upward in the z direction. The pad main surface  412   a  and the extended surface  413   a  are both flat and level with each other. As shown in  FIG. 3 , the extended portion  413  has an end portion  413   b . The end portion  413   b  overlaps with the lead  42  (pad portion  422 ) in a view in the y direction. A dimension W 412  in the x direction of the pad portion  412  is, for example, about 0.935 mm, and a dimension in the y direction of the pad portion  412  is, for example, about 0.4 mm. A dimension W 413  in the x direction of the extended portion  413  is, for example, about 0.2 mm, and the dimension in the y direction of the extended portion  413  is, for example, about 0.15 mm. 
     As shown in  FIGS. 2 and 3 , a pair of pressing marks  419  are formed on the lead  41 . The pair of pressing marks  419  are formed in a step of bonding the wires  51 . One of the pair of pressing marks  419  is formed on the extended portion  413  and has a form that is slightly recessed from the extended surface  413   a . The other of the pair of pressing marks  419  is formed on the pad portion  412  and has a form that is slightly recessed from the pad main surface  412   a . The shapes of the pressing marks  419  in a plan view are not limited to the shapes shown in  FIGS. 2 and 3 , and for example, depend on the shapes of tip portions of clamp members  90 . 
     As shown in  FIGS. 2 and 3 , the lead  42  includes a terminal portion  421  and a pad portion  422 . A portion of the terminal portion  421  is exposed from the resin member  6 . The terminal portion  421  is connected to the pad portion  422  at a portion covered by the resin member  6 . The terminal portion  421  is bent in the z direction at the portion exposed from the resin member  6 . The pad portion  422  is covered by the resin member  6 . The pad portion  422  is not connected to any of the connection members  5 . The pad portion  422  is electrically insulated from the electronic component  1 . The dimension in the x direction of the pad portion  422  is greater than that of the terminal portion  421  in a plan view. The dimension in the x direction of the terminal portion  421  is, for example, about 0.25 mm, and the dimension in the x direction of the pad portion  422  is, for example, about 0.45 mm. Also, the dimension in the y direction of the pad portion  422  is, for example, about 0.1 mm. 
     In the example shown in  FIG. 2 , the electronic component  1  is mounted on the die pad  46  and provided with at least one first electrode pad  251 A, which is connected to the first lead via the connection member  51 . The second lead  42 , electrically insulated from the electronic component  1 , is disposed on the same side as the first lead  41  with respect to the die pad  46 . In other words, the first and second leads  41 ,  42  are offset (spaced apart) from the die pad  46  in (one sense of) the y direction. Further, the first lead  41  includes the first pad portion  412  and the first extended portion  413  formed integral with the first pad portion  412 , where one end of the connection member  51  is bonded to the first pad portion  412 , and the first extended portion  413  extends in the x direction and terminates at a position located between the die pad  46  and (the pad portion  422  of) the second lead  42  as viewed in the first direction (z direction). 
     As shown in  FIGS. 2 and 3 , the third lead  43  includes two terminal portions  431 , a pad portion  432 , and an extended portion  433 . Portions of the terminal portions  431  are exposed from the resin member  6 . Each terminal portion  431  is connected to the pad portion  432  at a portion covered by the resin member  6 . Each terminal portion  431  is bent in the z direction at a portion exposed from the resin member  6 . Some of the connection members  5  (wires  52 ) are bonded to the pad portion  432 . The extended portion  433  extends from the pad portion  432 . The extended portion  433  extends from the edge of the pad portion  432  that opposes the lead  42 . In a plan view, the extended portion  433  extends from the pad portion  432  to the space between the lead  42  and the die pad  46 . The extended portion  413  and the extended portion  433  overlap with each other in a view in the x direction. A dimension W 432  in the x direction of the pad portion  432  is, for example, about 0.8 mm, and a dimension in the y direction of the pad portion  432  is, for example, about 0.4 mm. A dimension W 433  in the x direction of the extended portion  433  is, for example, about 0.4 mm, and the dimension in the y direction of the extended portion  433  is, for example, about 0.15 mm. 
     As shown in  FIG. 3 , in the lead  43 , the pad portion  432  has a main surface  432   a  that faces upward in the z direction. The extended portion  433  has an extended surface  433   a  that faces upward in the z direction. The pad main surface  432   a  and the extended surface  433   a  are both flat and level with each other. As shown in  FIG. 3 , the extended portion  433  has an end portion  433   b . The end portion  433   b  overlaps with the pad portion  422  of the lead  42  when viewed in the y direction. The end portion  433   b  opposes the end portion  413   b.    
     As shown in  FIGS. 2 and 3 , a pair of pressing marks  439  are formed on the lead  43 . The pair of pressing marks  439  are formed in a step of bonding the wires  52 . One of the pair of pressing marks  439  is formed on the extended portion  433  and has a form that is slightly recessed from the extended surface  433   a . The other of the pair of pressing marks  439  is formed on the pad portion  432  and has a form that is slightly recessed from the pad main surface  432   a . The shapes of the pressing marks  439  in a plan view are not limited to the shapes shown in  FIGS. 2 and 3 , and for example, depend on the shapes of tip portions of clamp members  90 . 
     As shown in  FIG. 2 , the fourth lead  44  includes three terminal portions  441  and a pad portion  442 . Portions of the terminal portions  441  are exposed from the resin member  6 . Each terminal portion  441  is connected to the pad portion  442  at a portion covered by the resin member  6 . Each terminal portion  441  is bent in the z direction at a portion exposed from the resin member  6 . Some of the connection members  5  (a wire  53  and a wire  54 , which will be described later) are bonded to the pad portion  442 . The pad portion  442  has a pad main surface  442   a  that faces upward in the z direction. The pad main surface  442   a  is flat. 
     As shown in  FIG. 2 , a pair of pressing marks  449  are formed in the lead  44 . The pair of pressing marks  449  are formed in a step of bonding the wires  53  and  54 . The pair of pressing marks  449  are formed on the pad portion  432  and have forms that are slightly recessed from the pad main surface  432   a . The shapes of the pressing marks  449  in a plan view are not limited to the shapes shown in  FIGS. 2 and 3 , and for example, depend on the shapes of tip portions of clamp members  90 . 
     As shown in  FIG. 2 , the leads  45  include terminal portions  451  and pad portions  452 . Portions of the terminal portions  451  are exposed from the resin member  6 . The terminal portions  451  are connected to the pad portions  452  at portions covered by the resin member  6 . The terminal portions  451  are bent in the z direction at portions exposed from the resin member  6 . Some of the connection members  5  (wires  55 ) are bonded to the pad portions  452 . In the pad portions  452 , for example, Ag plating is performed on Ni plating. For ease of comprehension, the regions to which Ag plating is applied are indicted by a dot pattern in  FIG. 2 . The pad portions  452  have shapes whose central portions in the y direction are narrowed in a plan view. 
     The electronic component  1  is mounted on the die pad  46 . In the example shown in the drawings, the die pad  46  is not electrically connected to the electronic component  1 , but the die pad  46  may also be electrically connected to the electronic component  1 . As shown in  FIGS. 2 and 5 , the die pad  46  includes a pad portion  461  and extended portions  462 . The electronic component  1  is mounted on the surface of the pad portion  461 . The pad portion  461  has, for example, a rectangular shape in a plan view. Extended portions  462  extend from the pad portion  461 . End surfaces  462   a  are exposed from the resin member  6  at the extended portions  462 . In the example shown in the drawings, the surface of the pad portion  461  that faces downward in the z direction is covered by the resin member  6 , but this surface may also be exposed from the resin member  6 . 
     As shown in  FIG. 2 , the lead  41 , the lead  42 , the lead  43 , and some of the leads  45  are arranged on one side in the y direction of the die pad  46  in the lead frame  4 . The terminal portions  411 ,  421 ,  431 , and  451  overlap with each other in a view in the x direction. The lead  44  and the other leads  45  are arranged on the other side of the die pad  46  in the y direction in a plan view. The terminal portions  441  and  451  overlap with each other in a view in the x direction. 
     As shown in  FIGS. 2 and 3 , the terminal portions  411  of the lead  41 , the terminal portion  421  of the lead  42 , and the terminal portions  431  of the lead  43  are arranged side by side in the x direction. In a plan view, the terminal portion  421  of the lead  42  is interposed between the terminal portions  411  of the lead  41  and the terminal portions  431  of the lead  43 . 
     The pad portion  422  of the lead  42  overlaps with the pad portion  412  of the lead  41  and the pad portion  432  of the lead  43  in a view in the x direction. Both the extended portion  413  of the lead  41  and the extended portion  433  of the lead  43  partially overlap with the pad portion  422  of the lead  42  in a view in the y direction. A straight line connecting the center in the x direction of the lead  42  overlaps with the extended portion  433 , as shown in  FIG. 3 . 
     A dimension W 41  (see  FIG. 3 ) in the x direction of the lead  41  and a dimension W 43  in the x direction of the lead  43  are substantially the same. The dimension W 433  in the x dimension of the extended portion  433  of the lead  43  is greater than the dimension W 413  in the x direction of the extended portion  413  of the lead  41 . As described above, the dimension W 413  in the x direction of the extended portion  413  is, for example, about 0.2 mm, and the dimension W 433  in the x direction of the extended portion  433  is, for example, about 0.4 mm. Also, the dimension W 432  in the x direction of the pad portion  432  of the lead  43  is smaller than the dimension W 412  of the x direction of the pad portion  412  of the lead  41 . As described before, the dimension W 412  in the x direction of the pad portion  412  is, for example, about 0.935 mm, and the dimension W 432  in the x direction of the pad portion  432  is, for example, about 0.8 mm. As shown in  FIG. 2 , the lead  41  is adjacent to the lead  42  in the x direction, but no lead is arranged on the side opposite to the side on which the lead  42  is present. Accordingly, the dimension in the x direction of the pad portion  412  of the lead  41  can be increased as appropriate. On the other hand, the lead  43  is interposed between the lead  42  and a lead  45  (the leftmost lead  45 ) in the x direction, and thus there is a restriction on increasing the dimension in the x direction of the pad portion  432 . In view of this, with the lead  43 , the dimension W 433  (see  FIG. 3 ) in the x direction of the extended portion  433  is set to be greater than the dimension W 413  in the x direction of the extended portion  413 . Accordingly, the difference between the total surface area of the pad main surface  412   a  and the extended surface  413   a  and the total surface area of the pad main surface  432   a  and the extended surface  433   a  can be reduced (and by extension, the total surface areas can be made equal). 
     A separation distance d 1  (see  FIG. 3 ) in the x direction between the extended portion  413  and the extended portion  433  is, for example, about 0.13 to 0.20 mm. A separation distance d 2  in the y direction between the pad portion  422  of the lead  42  and the extended portions  413  and  433  is, for example, about 0.13 to 0.20 mm. A separation distance d 3  in the x direction between the pad portion  422  of the lead  42  and the pad portion  412  of the lead  41  is, for example, about 0.13 to 0.20 mm. A separation distance d 4  in the x direction between the pad portion  422  of the lead  42  and the pad portion  432  of the lead  43  is, for example, about 0.13 to 0.20 mm. 
     The separation distances in the y direction between the leads  41 ,  43 ,  44 , and  45  and the die pad  46  are substantially the same, and are each, for example, about 0.15 mm. Also, the separation distance in the y direction between the lead  42  and the die pad  46  is greater than each of the separation distances in the y direction between the leads  41 ,  43 ,  44 , and  45  and the die pad  46 . 
     The dimensions in the x direction of the terminal portions  411 ,  421 ,  431 ,  441 , and  451  of the leads  41  to  45  are each, for example, about 0.25 mm. Also, the separation distance between two of the terminals  411 ,  421 ,  431 ,  441 , and  451  that are adjacent to each other in the x direction is about 0.25 mm. 
     The connection members  5  each electrically connect two members that are spaced apart from each other. Each connection member  5  electrically connects the electronic component  1  (one of the first semiconductor elements  2 A and  2 B and the second semiconductor element  3 ) and the lead frame  4 . The connection members  5  are linear members with circular cross-sections. The connection members  5  are bonding wires. As shown in  FIG. 2 , the connection members  5  include the two wires  51 , the two wires  52 , the wire  53 , the wire  54 , and the wires  55 . 
     The two wires  51  electrically connect the electrode pads  251 A of the first semiconductor element  2 A and the pad portion  412  of the lead  41 . As shown in  FIG. 2 , the wires  51  have first ends that are bonded to the electrode pads  251 A and second ends that are bonded to the pad portion  412 . In a plan view (see  FIGS. 2 and 3 ), the second ends of the wires  51  are arranged so as to overlap with line segments connecting the pair of pressing marks  419  that are formed on the lead  41 . 
     The two wires  52  electrically connect the electrode pads  252 B of the first semiconductor element  2 B and the pad portion  432  of the lead  43 . As shown in  FIG. 2 , the wires  52  have first ends bonded to the electrode pads  252 B and second ends bonded to the pad portion  432 . In a plan view, the second ends of the wires  52  are arranged so as to overlap with a line segment connecting the pair of pressing marks  439  formed on the lead  43 . 
     The wire  53  electrically connects the electrode pad  252 A of the first semiconductor element  2 A and the pad portion  442  of the lead  44 . As shown in  FIG. 2 , the wire  53  has a first end bonded to the electrode pad  252 A and a second end bonded to the pad portion  442 . In a plan view, the second end of the wire  53  is arranged so as to overlap with a line segment connecting the pair of pressing marks  449  formed on the lead  44 . 
     The wire  54  electrically connects the electrode pad  251 B of the first semiconductor element  2 B and the pad portion  442  of the lead  44 . As shown in  FIG. 2 , the wire  54  has a first end bonded to the electrode pad  251 B and a second end bonded to the pad portion  442 . In a plan view, the second end of the wire  54  overlaps with a line segment connecting the pair of pressing marks  449  formed on the lead  44 . 
     The wires  55  electrically connect the electrode pads  31  of the second semiconductor element  3  and the pad portions  452  of the leads  45 . As shown in  FIG. 2 , the wires  55  each have one end bonded to an electrode pad  31  and another end bonded to a pad portion  452  of a lead  45 . 
     The constituent material of the wires  51  to  54  is, for example, Al (aluminum). The thickness (diameter) of each of the wires  51  to  54  is the same, and is, for example, about φ 125 to 200 μm. The constituent material of the wires  55  is, for example, Au (gold). The constituent material of the wires  55  may also be Cu or Al. The thickness (diameter) of each wire  55  is smaller than the thickness (diameter) of each of the wires  51  to  54 . The thickness (diameter) of each wire  55  is, for example, φ 10 to 50 μm. For example, if the first semiconductor elements  2 A and  2 B are both MOSFETs, the wires  51  to  54  are bonded to any of the drain terminals (electrode pads  251 A and  251 B) or the source terminals (electrode pads  252 A and  252 B) of the first semiconductor elements  2 A and  2 B. Relatively large currents flow in the drain terminals and source terminals. Accordingly, in order to allow larger currents compared to the wires  55 , thick wires composed of Al are used as the wires  51  to  54 . 
     In the example shown in the drawings, the wires  51  to  54  are bonding wires, but bonding ribbons may also be used instead. 
     As shown in  FIGS. 1, 2, and 4 to 6 , the resin member  6  covers the electronic component  1 , part of the lead frame  4 , and the connection members  5 . The resin member  6  is composed of an insulating resin material. The constituent material of the resin member  6  is, for example, black epoxy resin. The resin member  6  has, for example, a rectangular shape in a plan view. The resin member  6  has a resin main surface  61 , a resin underside surface  62 , and resin side surfaces  63 . 
     The resin main surface  61  and the resin underside surface  62  are spaced apart from each other in the z direction. The resin side surfaces  63  are connected to both the resin main surface  61  and the resin underside surface  62  and are interposed between the resin main surface  61  and the resin underside surface  62  in the z direction. In the example shown in the drawing, the resin member  6  has a pair of resin side surfaces  631  that are spaced apart from each other in the x direction, and a pair of resin side surfaces  632  that are spaced apart from each other in they direction. The leads  41  to  45  protrude from one of the pair of resin side surfaces  632 . 
       FIG. 8  shows a circuit configuration of the electronic device A 1 .  FIG. 8  is a circuit diagram obtained when the electronic device A 1  is formed as a DC/DC converter. 
     In  FIG. 8 , reference signs sw 1  and sw 2  indicate switching elements. Reference sign Dr indicates a control circuit that controls the switching operations of the switching elements sw 1  and sw 2 , various types of protective function operations, and the like. Reference signs R 1  to R 3  indicate resistors, reference sign Vref indicates an internal reference voltage circuit, reference sign ss indicates a soft start circuit, reference sign pgd indicates a power good circuit, and reference sign amp indicates an error amplifier that receives the Vref output voltage and the FB terminal voltage as inputs. For example, one of the switching elements sw 1  and sw 2  corresponds to the first semiconductor element  2 A, and the other corresponds to the first semiconductor element  2 B. The component including the internal reference voltage circuit Vref, the soft start circuit ss, the power good circuit pgd, the error amplifier amp, and the control circuit Dr corresponds to the second semiconductor element  3 . 
     A terminal PVIN is a power source input terminal for a DC/DC converter. The terminal PVIN is connected to, for example, a terminal on a high potential side of a DC power source. The terminal PVIN corresponds to the lead  41  of the electronic device A 1 . A terminal PGND is a ground terminal of the DC/DC converter. The terminal PGND is connected to, for example, a terminal on a low potential side of the DC power source. The terminal PGND corresponds to the lead  43  of the electronic device A 1 . A terminal SW is an output terminal of the DC/DC converter. The terminal SW corresponds to the lead  44  of the electronic device A 1 . 
     A terminal AVIN is an analog portion power source input terminal. The terminal AGND is an analog portion ground terminal. A terminal EN is a device control terminal. A terminal FB is an output voltage feedback terminal. A terminal SS is a terminal for setting a soft start time. A terminal COMP is an ERRAMP output terminal. A terminal PGD is a power good terminal. A terminal CTL is a terminal for controlling various functions. A terminal MODE may also be used instead of the terminal CTL. The terminal MODE is a terminal for switching between various modes. The terminal AVIN, the terminal AGND, the terminal EN, the terminal FB, the terminal SS, the terminal COMP, the terminal PGD, and the terminal CTL (or the terminal MODE) each correspond to one of the leads  45 . 
     Next, a method for manufacturing the electronic device A 1  will be described with reference to  FIGS. 9 to 13 . 
     First, as shown in  FIG. 9 , the lead frame  4  is prepared (preparation step). For example, the lead frame  4  that is to be prepared can be formed by carrying out punching, etching, folding, and the like on a copper plate. As shown in  FIG. 8 , the lead frame  4  at this time includes the leads  41  to  45 , the die pad  46 , and a tie bar  49 , and the leads  41  to  45  and the die pad  46  are connected by the tie bar  49 . 
     Next, as shown in  FIG. 10 , the electronic component  1  is mounted on the lead frame  4  (mounting step). Specifically, the electronic component  1  is adhered to the pad portion  461  of the die pad  46  via a bonding material. For example, if the bonding material is solder, solder paste is applied to the lead frame  4 , and the electronic component  1  is mounted on the applied solder paste. At this time, the electronic component  1  is placed in an orientation in which the electrode pads  251 A,  252 A,  251 B,  252 B, and  31  face upward in the z direction. Next, reflow processing is performed, and the solder paste is melted and then allowed to solidify. Accordingly, the electronic component  1  is bonded to the pad portion  461  of the die pad  46 . Ag paste, sintered metal, or the like may also be used instead of solder as the bonding material. The bonding material is not limited to being conductive, and may also be insulating. 
     Next, as shown in  FIG. 11 , the connection members  5  (the wires  51  to  55 ) are bonded (bonding step). The wires  51  to  54  are, for example, Al bonding wires. The wires  51  to  54  are bonded through wedge bonding. The wires  55  are, for example, Au bonding wires. The wires  55  are bonded through ball bonding. It is sufficient to use a known bonding apparatus in the bonding of the wires  51  to  55 . The bonding apparatus includes a capillary and a cutter. 
     Prior to the bonding to the wires  51  to  55 , the lead frame  4  is set on a predetermined jig (not shown). The jig is formed so as to match the shape of the lead frame  4 , and supports the lead frame  4  from a side opposite to the side on which the electronic component  1  is mounted. Next, as shown in  FIG. 12 , the leads  41 ,  43 , and  44  are pressed down by the clamp members  90 . The clamp members  90  also press down portions of the lead frame  4  other than the leads  41 ,  43 , and  44  (e.g., the tie bar  49 , etc.). The clamp members  90  each have a portion (tip portion) that is formed into a narrow metal rod shape, and press down the leads  41 ,  43 , and  44  with these tip portions. Accordingly, the leads  41 ,  43 , and  44  are fixed. 
     In the example shown in  FIG. 12 , one location on the extended portion  413  and one location on the pad portion  412  are pressed down by the clamp members  90  in order to fix the lead  41 . At this time, as shown in  FIG. 11 , a pair of pressing marks  419  are formed due to the pressing force of the clamp members  90  at the portions pressed down by the clamp members  90 . Also, one location on the extended portion  433  and one location on the pad portion  432  are pressed down by the clamp members  90  in order to fix the lead  43 . At this time, as shown in  FIG. 11 , a pair of pressing marks  439  are formed due to the pressing force of the clamp members  90  at the portions pressed down by the clamp members  90 . Furthermore, two locations on the pad portion  442  are pressed down by the clamp members  90  in order to fix the lead  44 . In the leads  41 ,  43 , and  44 , the pressed-down positions are spaced apart from each other in the x direction. At this time, as shown in  FIG. 11 , a pair of pressing marks  449  are formed due to the pressing force of the clamp members  90  at the portions pressed down by the clamp members  90 . 
     The wires  51  to  55  are bonded while the leads  41 ,  43 , and  44  are put in a fixed state by the clamp members  90 . The bonding of the wires  51  to  55  is performed using the following procedure. 
     In the bonding of the wires  51 , first, the wires  51  are brought into contact with the electrode pads  251 A of the electronic component  1  using the tip of a capillary. Then, the wires  51  are bonded to the electrode pads  251 A by providing pressure and ultrasonic vibration from the capillary to the wires  51 . Next, the tip of the capillary is moved from the electrode pads  251 A to the pad portion  412  of the lead  41 . Then, the wires  51  are bonded to the pad portion  412  by providing pressure and ultrasonic vibration to the wires  51  from the capillary. At this time, the portions of the wires  51  that are bonded to the pad portion  412  intersect with a line segment connecting the two locations of the lead  41  that are being pressed by the clamp members  90 . After this bonding, the wires  51  are cut using a cutter. Thus, as shown in  FIG. 11 , the wires  51  each have one end bonded to an electrode pad  251 A and another end bonded to the pad portion  412 . 
     The bonding of the wires  52  to  54 , which are composed of aluminum, is also performed similarly to the bonding of the wires  51 . Accordingly, as shown in  FIG. 11 , the wires  52  each have one end bonded to the electrode pad  252 B and another end bonded to the pad portion  432  of the lead  43 . The portions of the wires  52  that are bonded to the pad portion  432  intersect a line segment connecting the two locations of the lead  43  that were pressed by the clamp members  90 . Accordingly, as shown in  FIG. 11 , the wire  53  has one end bonded to the electrode pad  252 A and another end bonded to the pad portion  442  of the lead  44 . Also, as shown in  FIG. 11 , the wire  54  has one end bonded to the electrode pad  251 B and another end bonded to the pad portion  442  of the lead  44 . The portions of the wires  53  and  54  that are bonded to the pad portion  442  intersect a line segment connecting the two locations of the lead  44  that were pressed by the clamp members  90 . 
     Thereafter, the wires  55  are respectively bonded to the electrode pads  31  and the pad portions  452  of the leads  45 . Accordingly, as shown in  FIG. 11 , the electronic component  1  and the lead frame  4  are connected by the wires  51  to  55 . 
     Next, as shown in  FIG. 13 , the resin member  6  is formed. The formation of the resin member  6  is performed through, for example, transfer molding. The constituent material of the resin member  6  is, for example, epoxy resin. 
     Next, the lead frame  4  is cut as appropriate and divided for each electronic component  1 . The cutting of the lead frame  4  is performed through, for example, blade dicing. 
     The electronic device A 1  shown in  FIGS. 1 to 7  is formed through the above-described steps. 
     The actions and effects of the electronic device A 1  configured as described above and the action and effects of the method for manufacturing the electronic device A 1  are as follows. 
     The electronic device A 1  includes an electronic component  1  that includes electrode pads  251 A, a die pad  46  on which the electronic component  1  is mounted, a lead  41  that is spaced apart from the die pad  46 , and wires  51  (connection members  5 ) that electrically connect the electrode pad  251 A and the lead  41 . The lead  41  includes a pad portion  412  to which the wires  51  (connection member  5 ) are bonded, and an extended portion  413  that extends from the pad portion  412 . According to this configuration, when the wires  51  are bonded to the pad portion  412 , clamp members  90  can be pressed down on the extended portion  413 . Accordingly, the region to be pressed down by the clamp members  90  (extended portion  413 ) can be ensured while the region for bonding the wires  51  (pad portion  412 ) is ensured. Thus, the wires  51  (connection members  5 ) can be suitably bonded in the electronic device A 1 . 
     In particular, when the wires  51  are bonded through wedge bonding, greater pressure and vibration are applied to the target to be bonded to (the pad portion  412 ) compared to, for example, ball bonding. Also, the greater the thickness of the wires  51  is, the greater the pressure and vibration applied to the target to be bonded to (the pad portion  412 ) are. Accordingly, ensuring the extended portion  413  for fixing the lead  41  with the clamp members  90  is preferable when suitably bonding the wires  51 . 
     The electronic device A 1  includes a lead  42  that is spaced apart from the die pad  46  and the lead  41 . The lead  41  and the lead  42  are arranged on one side of the die pad  46  in the y direction in a plan view. Also, in the lead  41 , an extended portion  413  extends from the pad portion  412  to the space between the die pad  46  and the lead  42  in a plan view. Also, the lead  42  is not bonded to any of the connection members  5 , and is electrically insulated from the electronic component  1 . According to this configuration, a space for forming the extended portion  413  can be ensured by reducing the size of the lead  42  that is not electrically connected to the electronic component  1 . 
     The electronic device A 1  includes a lead  43  that is spaced apart from the lead  41 , the lead  42 , and the die pad  46 , and wires  52  that electrically connect the lead  43  and the electrode pad  252 B of the electronic component  1 . The lead  43  includes a pad portion  432  to which the wires  52  (connection member  5 ) are bonded, and an extended portion  433  that extends from the pad portion  432 . According to this configuration, when the wires  52  are bonded to the pad portion  432 , clamp members  90  can be pressed down on the extended portion  433 . Accordingly, the region pressed down by the clamp members  90  (extended portion  433 ) can be ensured while the region for bonding the wires  52  (pad portion  432 ) is ensured. Thus, the wires  52  (connection members  5 ) can be suitably bonded in the electronic device A 1 . 
     In particular, if the wires  52  are bonded through wedge bonding, a relatively large amount of pressure and vibration can be applied to the target to be bonded to (pad portion  432 ). Also, the greater the thickness of the wires  52  is, the greater the amount of pressure and vibration applied to the target to be bonded to (the pad portion  432 ) are. Accordingly, ensuring the extended portion  433  for fixing the lead  43  with the clamp members  90  is preferable when suitably bonding the wires  52 . 
     In the electronic device A 1 , the lead  43  is arranged on the side on which the lead  41  and the lead  42  are arranged (one side in the y direction) with respect to the die pad  46 , in a plan view. Also, in the lead  43 , an extended portion  433  extends from the pad portion  432  to the space between the die pad  46  and the lead  42  in a plan view. Also, the lead  42  is not bonded to any of the connection members  5 , and is electrically insulated from the electronic component  1 . According to this configuration, a space for forming the extended portion  433  can be ensured by reducing the size of the lead  42  that is not electrically connected to the electronic component  1 . 
     In the electronic device A 1 , a pair of pressing marks  419 , which are marks resulting from the clamp members  90  pressing down during the bonding of the wires  51 , are formed on the lead  41 . One of the pair of pressing marks  419  is formed on the extended portion  413 , and the other of the pair of pressing marks  419  is formed on the pad portion  412 . Also, the portions of the wires  51  that are bonded to the pad portion  412  intersect a line segment connecting the pair of pressing marks  419 . According to this configuration, it is possible to suitably prevent the pad portion  412  from shaking and deforming due to the pressure and vibration applied when bonding the wires  51  to the pad portion  412 . 
     In the electronic device A 1 , a pair of pressing marks  439  are formed on the lead  43 , one of the pair of pressing marks  439  is formed on the extended portion  433 , and the other of the pair of pressing marks  439  is formed on the pad portion  432 . Also, the portions of the wires  52  that are bonded to the pad portion  432  intersect a line segment connecting the pair of pressing marks  439 . According to this configuration, it is possible to suitably prevent the pad portion  432  from shaking and deforming due to the pressure and vibration applied when bonding the wires  52  to the pad portion  432 . 
     In the electronic device A 1 , the lead  42  includes a terminal portion  421  and a pad portion  422 . The pad portion  422  has a larger dimension in the x direction than the terminal portion  421 . According to this configuration, the pad portion  422  is in a state of protruding in the x direction past the terminal portion  421  in a plan view, and the protruding portion is covered by the resin member  6 . Accordingly, it is possible to suppress a case in which the lead  42  comes out of the resin member  6  in the electronic device A 1 . 
       FIGS. 14 and 15  show an electronic device based on a second embodiment on a first aspect. The electronic device A 2  of the second embodiment on the first aspect has a different configuration of the electronic component  1 , and accordingly also has a different configuration of the connection members  5 .  FIG. 14  is a plan view showing the electronic device A 2 , and the resin member  6  is indicated by an imaginary line.  FIG. 15  is a schematic cross-sectional view showing the electronic component  1  of the electronic device A 2 . 
     As shown in  FIG. 15 , in the electronic component  1  of the electronic device A 2 , a common wiring layer  23  is formed above the semiconductor substrates  21 A and  21 B. The wiring layer  23  is obtained by making the above-described wiring layers  23 A and  23 B common, and similarly to the above-described wiring layers  23 A and  23 B, conductive layers  231  and insulating layers  232  are stacked alternatingly. Also, the conductive layers  231  are electrically connected via vias  233  that are formed so as to penetrate through the insulating layers  232 . Note that the protective film  24  is also used in common, accompanying the common use of the wiring layer  23 . 
     The electronic component  1  of the electronic device A 2  includes electrode pads  251 ,  252 , and  253 . The electrode pads  251 ,  252 , and  253  are exposed from the open portions of the protective film  24 . The electrode pad  251  is electrically connected to the semiconductor regions  221 A via the wiring layer  23 . The electrode pad  252  is electrically connected to the semiconductor regions  222 B via the wiring layer  23 . The electrode pad  253  is electrically connected to the semiconductor regions  222 A and the semiconductor regions  221 B via the wiring layer  23 . As stated before, the semiconductor regions  221 A and  222 A are respectively the drain regions and the source regions of the first semiconductor element  2 A, and the semiconductor regions  221 B and  222 B are respectively the drain regions and the source regions of the first semiconductor element  2 B. Accordingly, the electrode pad  251  is a drain terminal of the first semiconductor element  2 A, the electrode pad  252  is a source terminal of the first semiconductor element  2 B, and the electrode pad  253  is a common terminal of the source terminal of the first semiconductor element  2 A and the drain terminal of the first semiconductor element  2 B. 
     As shown in  FIG. 14 , the connection member  5  of the electronic device A 2  includes the wires  51 ,  52 , and  53 , and the wires  55 . In the electronic device A 2 , the wires  51 ,  52 , and  53  are A 1  bonding wires, similarly to those of the electronic device A 1 . The thickness (diameter) of each of the wires  51 ,  52 , and  53  is greater than that of each of the wires  51 ,  52 , and  53  of the electronic device A 1 , and is, for example, about φ 300 μm. 
     The wire  51  has one end bonded to the electrode pad  251 , and another end bonded to the pad portion  412 . The electrode pad  251  and the pad portion  412  (lead  41 ) are electrically connected to each other via the wire  51 . 
     The wire  52  has one end bonded to the electrode pad  252  and another end bonded to the pad portion  432 . The electrode pad  252  and the pad portion  432  (lead  43 ) are electrically connected to each other via the wire  52 . 
     The wire  53  has one end bonded to the electrode pad  253 , and another end bonded to the pad portion  442 . The electrode pad  253  and the pad portion  442  (lead  44 ) are electrically connected to each other via the wire  53 . 
     According to the electronic device A 2 , similarly to the electronic device A 1 , the lead  41  includes a pad portion  412  to which the wire  51  (connection member  5 ) and an extended portion  413  that extends from the pad portion  412 . Accordingly, when the wire  51  is bonded to the pad portion  412 , clamp members  90  can be pressed down on the extended portion  413 . Thus, similarly to the electronic device A 1 , in the electronic device A 2 , it is possible to ensure a region for bonding the wire  51  (pad portion  412 ) while ensuring a region pressed down by the clamp members  90  (extended portion  413 ), and therefore the wire  51  (connection member  5 ) can be suitably bonded. 
     According to the electronic device A 2 , similarly to the electronic device A 1 , the lead  43  includes a pad portion  432  to which the wire  52  (connection member  5 ) is bonded, and an extended portion  433  that extends from the pad portion  432 . Accordingly, when the wire  52  is bonded to the pad portion  432 , clamp members  90  can be pressed down on the extended portion  433 . Thus, similarly to the electronic device A 1 , in the electronic device A 2 , it is possible to ensure a region for bonding the wire  52  (pad portion  432 ) while ensuring a region pressed down by the clamp members  90  (extended portion  433 ), and therefore the wire  52  (connection member  5 ) can be suitably bonded. 
     According to the electronic device A 2 , similarly to the electronic device A 1 , in the lead  41 , the extended portion  413  extends from the pad portion  412  to the space between the die pad  46  and the lead  42  in a plan view. Also, in the lead  43 , an extended portion  433  extends from the pad portion  432  to the space between the die pad  46  and the lead  42  in a plan view. Also, the lead  42  is not bonded to any of the connection members  5 , and is electrically insulated from the electronic component  1 . Accordingly, in the electronic device A 2 , similarly to the electronic device A 1 , a space for forming the extended portion  413  and the extended portion  433  can be ensured by reducing the size of the lead  42  that is not electrically connected to the electronic component  1 . 
     Otherwise, the electronic device A 2  can exhibit effects similar to those of the electronic device A 1  using configurations held in common with the electronic device A 1 . 
     In the first embodiment and the second embodiment of the first aspect, a case was described in which the active region  220 A is formed on the semiconductor substrate  21 A and the active region  220 B is formed on the semiconductor substrate  21 B in the electronic component  1 , but the active regions  220 A and  220 B may also be formed on a common semiconductor substrate  21 .  FIG. 16  shows a variation of the case in which the active regions  220 A and  220 B are formed on a common semiconductor substrate  21  in the electronic component  1  of the electronic device A 1 .  FIG. 17  shows a variation of the case in which the active regions  220 A and  220 B are formed on a common semiconductor substrate  21  in the electronic component  1  of the electronic device A 2 . Both  FIGS. 16 and 17  show schematic cross-sectional views of the electronic components  1  according to the embodiments. 
     As shown in  FIGS. 16 and 17 , the electronic component  1  includes the semiconductor substrate  21  that is common to the first semiconductor elements  2 A and  2 B. The semiconductor substrate  21  includes the substrate main surface  211  and the substrate underside surface  212 . The substrate main surface  211  and the substrate underside surface  212  are spaced apart from each other in the z direction and face mutually opposite directions. In the form shown in  FIG. 16 , the wiring layers  23 A and  23 B are formed above the substrate main surface  211  and in the form shown in  FIG. 17 , the wiring layer  23  is formed above the substrate main surface  211 . 
     In the first embodiment and the second embodiment of the first aspect, a case was described in which the first semiconductor element  2 B is arranged between the first semiconductor element  2 A and the second semiconductor element  3 , but the present disclosure is not limited thereto. For example, the first semiconductor element  2 A may also be arranged between the first semiconductor element  2 B and the second semiconductor element  3 . In this case, the lead  41  is electrically connected to the semiconductor region  222 B (source region) of the first semiconductor element  2 B. Accordingly, the lead  41  corresponds to the terminal PGND of the circuit diagram shown in  FIG. 8 . Also, the lead  43  is electrically connected to the semiconductor region  221 A (drain region) of the first semiconductor element  2 A. Accordingly, the lead  43  corresponds to the terminal PVIN of the circuit diagram shown in  FIG. 8 . 
     In the first embodiment and the second embodiment of the first aspect, a case was described in which the lead  42  includes the pad portion  422 , but the lead  42  may also not include the pad portion  422 . That is, the lead  42  may also be constituted by only the terminal portion  421 .  FIG. 18  shows a variation of the case in which the lead  42  does not include the pad portion  422  in the electronic device A 1 .  FIG. 18  is a plan view showing an electronic device according to the variation. Note that in  FIG. 18 , the resin member  6  is indicated by an imaginary line. As shown in  FIG. 18 , the lead  42  does not include the pad portion  422  and is constituted by only the terminal portion  421 . For this reason, the extended portion  413  of the lead  41  and the extended portion  433  of the lead  43  are formed to be greater in size than the extended portions  413  and  433  of the first embodiment in a plan view. Accordingly, since the extended portion  413  and the extended portion  433  are large in the present variation, the regions pressed by the clamp members  90  can be made greater in size. Accordingly, for example, since the tip portions of the clamp members  90  can be made greater in size, the leads  41  and  43  can be fixed more reliably. 
     In the first embodiment and the second embodiment of the first aspect, a case was described in which the lead  41  includes the extended portion  413  and the lead  43  includes the extended portion  433 , but it is also possible to provide only one of the extended portions  413  and  433 . For example, if the lead  41  includes the extended portion  413  and the lead  43  does not include the extended portion  433 , the plan view surface area of the extended portion  413  can be made even greater in size. Also, if the lead  41  does not include the extended portion  413  and the lead  43  includes the extended portion  433 , the plan view surface area of the extended portion  433  can be made larger. 
     In the first embodiment and the second embodiment of the first aspect, a case was described in which the lead  42  is not electrically connected to the electronic component  1 , but the lead  42  may also be electrically connected to the electronic component  1 . However, since the pad portion  422  of the lead  42  is relatively (e.g., compared to the pad portion  452 ) small and the region for bonding the bonding wire is small, it is preferable to use a thin wire similar to a wire  55 , for example, for electrically connecting the pad portion  422  and the electronic component  1 . 
     In the first embodiment and the second embodiment of the first aspect, a case was described in which the electronic component  1  includes the first semiconductor elements  2 A and  2 B (e.g., MOSFETs) and the second semiconductor element  3  (e.g., the control IC), but there is no limitation to this. For example, the electronic component  1  may also be configured to not include any one of the first semiconductor elements  2 A and  2 B, and to include one of the first semiconductor elements  2 A and  2 B and the second semiconductor element  3  for controlling the one of the first semiconductor elements  2 A and  2 B. Alternatively, the electronic component  1  may also be configured to not include the second semiconductor element  3  and to include the two first semiconductor elements  2 A and  2 B. Alternatively, the electronic component  1  may also be configured to not include any one of the first semiconductor elements  2 A and  2 B and the second semiconductor element  3 , and to include only one of the first semiconductor elements  2 A and  2 B. 
     In the first embodiment and the second embodiment of the first aspect, a case was described in which the electronic devices A 1  and A 2  have SOP package structures, but the present disclosure is not limited to this. For example, the package structure may be that of a TO (Transistor Outline) package, a QFP (Quad Flat Package), an SON (Small Outline Non-leaded Package), a DFN (Dual Flatpack Non-leaded Package), a QFN (Quad Flat Non-leaded Package), or the like. 
     The electronic device and the method for manufacturing the electronic device based on the first aspect are not limited to the above-described embodiments. Specific configurations of portions of the electronic device of the present disclosure and specific processes for each step of the method for manufacturing the electronic device of the present disclosure. 
     The electronic device and the method for manufacturing the electronic device according to the first aspect of the present disclosure may be defined as in the following clauses. 
     Clause 1A. An electronic device comprising: 
     an electronic component provided with a first electrode pad; 
     a die pad including an obverse surface facing in a first direction, the electronic component being mounted on the obverse surface; 
     a first lead spaced apart from the die pad; 
     a second lead spaced apart from the die pad and the first lead; and 
     a first connection member electrically connecting the first electrode pad and the first lead to each other, 
     wherein the first lead and the second lead are disposed, as viewed in the first direction, on a same side of the die pad in a second direction perpendicular to the first direction, 
     the first lead includes a first pad portion and a first extended portion, 
     the first connection member is bonded to the first pad portion, and 
     the first extended portion extends from the first pad portion up to a position located between the die pad and the second lead as viewed in the first direction. 
     Clause 2A. The electronic device according to clause 1A, wherein the second lead is electrically insulated from the electronic component. 
     Clause 3A. The electronic device according to clause 1A or  2 A, wherein the first pad portion includes a first pad obverse surface to which the first connection member is bonded, 
     the first extended portion includes a first extend surface facing in a same direction as the first pad obverse surface, and the first extended surface is formed with a pressing mark recessed in the first direction. 
     Clause 4A. The electronic device according to any one of clauses 1A to 3A, further comprising a second connection member and a third lead spaced apart from the die pad, the first lead and the second lead, wherein the electronic component is provided with a second electrode pad, and the second connection member electrically connects the second electrode pad and the third lead to each other. 
     Clause 5A. The electronic device according to clause 4A, wherein the third lead is disposed on a same side of the die pad as the first lead and the second lead as viewed in the first direction. 
     Clause 6A. The electronic device according to clause 5A, wherein the third lead includes a second pad portion and a second extended portion, 
     the second connection member is bonded to the second pad portion, and 
     the second extended portion extends from the second pad portion up to a position between the die pad and the second lead as viewed in the first direction. 
     Clause 7A. The electronic device according to clause 6A, wherein the second pad portion includes a second pad obverse surface to which the second connection member is bonded, 
     the second extended portion includes a second extended surface facing in a same direction as the second pad obverse surface, and 
     the second extended surface is formed with a pressing mark recessed in the first direction. 
     Clause 8A. The electronic device according to clause 6A or 7A, further comprising a resin member covering the electronic component, wherein the first lead includes a first terminal portion that is connected to the first pad portion and exposed from the resin member, and 
     the third lead includes a second terminal portion that is connected to the second pad portion and exposed from the resin member. 
     Clause 9A. The electronic device according to clause 8A, wherein the second lead includes a third terminal portion exposed from the resin member, and 
     the third terminal portion is disposed between the first terminal portion and the second terminal portion in a third direction perpendicular to the first direction and the second direction. 
     Clause 10A. The electronic device according to clause 9A, wherein the first extended portion and the second extended portion overlap with each other as viewed in the third direction. 
     Clause 11A. The electronic device according to clause 9A or 10A, wherein the second lead includes a central portion in the third direction, and the central portion overlaps with one of the first extended portion and the second extended portion as viewed in the second direction. 
     Clause 12A. The electronic device according to any one of clauses 9A to 11A, wherein the first lead and the third lead are substantially equal in size measured in the third direction. 
     Clause 13A. The electronic device according to any one of clauses 9A to 12A, wherein the second lead includes a third pad portion that is connected to the third terminal portion and covered by the resin member. 
     Clause 14A. The electronic device according to any one of clauses 4A to 13A, wherein the electronic component includes a first semiconductor region and a second semiconductor region, 
     the first electrode pad is electrically connected to the first semiconductor region, and 
     the second electrode pad is electrically connected to the second semiconductor region. 
     Clause 15A. The electronic device according to clause 14A, further comprising a fourth lead and at least one third connection member, wherein the fourth lead is spaced apart from the die pad, the first lead, the second lead and the third lead, 
     the electronic component is provided with at least one third electrode pad, and 
     the third connection member electrically connects the third electrode pad and the fourth lead to each other. 
     Clause 16A. The electronic device according to clause 15A, wherein the electronic component includes a third semiconductor region and a fourth semiconductor region, and 
     the third electrode pad is electrically connected to at least one of the third semiconductor region and the fourth semiconductor region. 
     Clause 17A. The electronic device according to clause 16A, wherein the electronic component includes a first active region and a second active region, 
     the first semiconductor region and the third semiconductor region are formed in the first active region, and 
     the second semiconductor region and the fourth semiconductor region are formed in the second active region. 
     Clause 18A. The electronic device according to clause 17A, wherein the at least one third electrode pad comprises a plurality of third electrode pads, one of the plurality of third electrode pads being electrically connected to the third semiconductor region, another of the plurality of third electrode pads being electrically connected to the fourth semiconductor region, and 
     the at least one third connection member comprises a plurality of third connection members, one of the plurality of third connection members electrically connecting said one of the plurality of third electrode pads and the fourth lead to each other, another of the plurality of third connection members electrically connecting said another of the plurality of third electrode pads and the fourth lead to each other. 
     Clause 19A. The electronic device according to clause 17A or 18A, wherein the first active region is formed with a first control region, the second active region is formed with a second control region, and the electronic component comprises a control IC configured to output control signals to the first control region and the second control region. 
     Clause 20A. The electronic device according to clause 19A, further comprising a fifth lead and a fourth connection member, wherein the fifth lead is spaced apart from the die pad, the first lead, the second lead, the third lead and the fourth lead, 
     the electronic component is provided with a fourth electrode pad, and 
     the fourth connection member electrically connects the fourth electrode pad and the fifth lead to each other. 
     Clause 21A. The electronic device according to clause 20A, wherein the fourth connection member is smaller in thickness than the first connection member. 
     Clause 22A. The electronic device according to clause 20A or 21A, wherein the fourth connection member is smaller in thickness than the second connection member. 
     Clause 23A. The electronic device according to any one of clauses 17A to 22A, wherein the electronic component comprises a first semiconductor substrate and a second semiconductor substrate, 
     the first active region is formed in the first semiconductor substrate, and the second active region is formed in the second semiconductor substrate. 
     Clause 24A. A method for manufacturing an electronic device, the method comprising: 
     preparing a lead frame including a die pad, a first lead and a second lead, the die pad having an obverse surface facing in a first direction; 
     mounting an electronic component on the obverse surface of the die pad, the electronic component being provided with a first electrode pad; and 
     bonding a first connection member to the first electrode pad and the first lead, 
     wherein the first lead and the second lead are disposed, as viewed in the first direction, on a same side of the die pad in a second direction perpendicular to the first direction, 
     the first lead includes a first pad portion and a first extended portion, the first extended portion extending from the first pad portion up to a position between the die pad and the second lead as viewed in the first direction, and 
     said bonding a first connection member comprises pressing down the first extended portion with a clamp member in bonding the first connection member to the first pad portion. 
     In the following description, various embodiments according to a second aspect of the present disclosure will be described. 
       FIGS. 19 to 26  show an electronic device based on a first embodiment of a second aspect. An electronic device B 1  shown in the drawings is, for example, a package called an SOP (Small Outline Package), and is, for example, a power supply IC. The electronic device B 1  includes an electronic component  1 , a lead frame  4 , connection members  5 , and a resin member  6 . The connection member  5  is, for example, a wire, but the present disclosure is not limited to this. 
     The electronic component  1  is the functional center of the electronic device B 1 . The electronic component  1  is bonded to the lead frame  4  (die pad  46 ) via a bonding material. The electronic component  1  includes two first semiconductor elements  2 A and  2 B and a second semiconductor element  3 . 
     The first semiconductor elements  2 A and  2 B are, for example, MOSFETs. Note that the first semiconductor elements  2 A and  2 B are not limited to MOSFETs, and may also be other transistors (e.g., bipolar transistors, IGBTs, etc.), diodes, or the like. 
     As shown in  FIG. 20  or  FIG. 26 , the first semiconductor element  2 A includes a semiconductor substrate  21 A, a wiring layer  23 A, an insulating protective film  24 A, and electrode pads  251 A and  252 A. 
     The semiconductor substrate  21 A is composed of, for example, a semiconductor material such as Si (silicon), SiC (silicon carbide), GaN (gallium nitride), and Ga 2 O 3  (gallium oxide). As shown in  FIG. 26 , the semiconductor substrate  21 A has a substrate main surface  211 A and a substrate underside surface  212 A. The substrate main surface  211 A and the substrate underside surface  212 A are spaced apart from each other in the z direction. 
     As shown in  FIG. 26 , an active region  220 A is formed on the substrate main surface  211 A side of the semiconductor substrate  21 A. The active region  220 A includes semiconductor regions  221 A,  222 A, and  223 A. The semiconductor regions  221 A are, for example, drain regions. The semiconductor regions  222 A are, for example, source regions. The semiconductor regions  223 A are, for example, gate regions. 
     As shown in  FIG. 26 , the wiring layer  23 A is formed above the substrate main surface  211 A of the semiconductor substrate  21 A. For example, in the wiring layer  23 A, conductive layers  231  and insulating layers  232  are stacked alternatingly on each other. The conductive layers  231  are electrically connected via vias  233  that are formed so as to penetrate through the insulating layers  232 . 
     As shown in  FIG. 26 , the protective film  24 A is formed above the wiring layer  23 A and covers the upper surface of the wiring layer  23 A. As shown in  FIG. 20 , the protective film  24 A has a plurality of portions that are open, and electrode pads  251 A and  252 A (portions of the respective conductive layers  231 ) are exposed from these opening. The protective film  24 A is, for example, an Si 3 Ni 4  layer or an SiO 2  layer that is formed through plasma CVD, or a polyimide resin layer that is formed through coating. Alternatively, the protective film  24 A may also be formed through a combination of plasma CVD and coating. 
     The electrode pads  251 A and  252 A are terminals of the first semiconductor element  2 A. The electrode pads  251 A are electrically connected to the semiconductor regions  221 A via the wiring layer  23 A. The electrode pads  251 A are drain terminals of the first semiconductor element  2 A. Some of the connection members  5  (wires  51 ) are bonded to the electrode pads  251 A. The electrode pads  252 A are electrically connected to the semiconductor regions  222 A via the wiring layer  23 A. The electrode pads  252 A are the source terminals of the first semiconductor element  2 A. Some of the connection members  5  (wires  53 ) are bonded to the electrode pads  252 A. 
     As shown in  FIGS. 20 and 26 , the first semiconductor element  2 B includes a semiconductor substrate  21 B, a wiring layer  23 B, a protective film  24 B, and electrode pads  251 B and  252 B. 
     The semiconductor substrate  21 B is composed of, for example, a semiconductor material such as Si (silicon), SiC (silicon carbide), GaN (gallium nitride), and Ga 2 O 3  (gallium oxide). As shown in  FIG. 26 , the semiconductor substrate  21 B has a substrate main surface  211 B and a substrate underside surface  212 B. The substrate main surface  211 B and the substrate underside surface  212 B are spaced apart from each other in the z direction. 
     As shown in  FIG. 26 , an active region  220 B is formed on the substrate main surface  211 B side of the semiconductor substrate  21 B. The active region  220 B includes semiconductor regions  221 B,  222 B, and  223 B. The semiconductor regions  221 B are, for example, drain regions. The semiconductor regions  222 B are, for example, source regions. The semiconductor regions  223 B are, for example, gate regions. 
     As shown in  FIG. 26 , the wiring layer  23 B is formed above the substrate main surface  211 B of the semiconductor substrate  21 B. The wiring layer  23 B can be formed similarly to the wiring layer  23 A. For example, in the wiring layer  23 B, conductive layers  231  and insulating layers  232  are stacked alternatingly on each other. The conductive layers  231  are electrically connected via vias  233  that are formed so as to penetrate through the insulating layers  232 . 
     As shown in  FIG. 26 , the protective film  24 B is formed above the wiring layer  23 B and covers the upper surface of the wiring layer  23 B. As shown in  FIG. 20 , portions of the protective film  24 B are open, and electrode pads  251 B and  252 B are exposed from the openings. The protective film  24 B is, for example, an Si 3 Ni 4  layer or an SiO 2  layer that is formed through plasma CVD, or a polyimide resin layer that is formed through coating. Alternatively, the protective film  24 B may also be formed through a combination of plasma CVD and coating. The protective film  24 A and the protective film  24 B may also be formed in one piece. 
     The electrode pads  251 B and  252 B are terminals of the first semiconductor element  2 B. The electrode pads  251 B are electrically connected to the semiconductor regions  221 B via the wiring layer  23 B. The electrode pads  251 B are drain terminals of the first semiconductor element  2 B. One of the connection members  5  (wire  54 ) is bonded to the electrode pad  251 B. The electrode pads  252 B are electrically connected to the semiconductor regions  222 B via the wiring layer  23 B. The electrode pads  252 B are the source terminals of the first semiconductor element  2 B. Some of the connection members  5  (wires  52 ) are bonded to the electrode pads  252 B. 
     Reference is now made to  FIG. 20A , which is a plan view illustrating a variation of the first semiconductor element  2 A shown in  FIG. 20 . This variation is different in configuration of the electrode pads  251 A,  252 A from that shown in  FIG. 20 . Specifically, according to the variation of  FIG. 20A , three electrode pads  251 A or  252 A are provided for each of the conductive layers  231 . In other words, a plurality of openings are formed in the protective film  24 A for each conductive layer  231 . Further, for the leftmost and rightmost conductive layers  231  respectively, the upper two electrode pads  251 A are connected to each other via a connection member (wire  51  in the illustrated example). For the central conductive layer  231 , the lower two electrode pads  252 A are connected to each other via another connection member (wire in the illustrated example). As described with this variation, an additional electrode pad(s) and an additional connection member(s) may be provided for each or a selected one(s) of the conductive layers  231 , thereby forming a bypass of electric current accompanying the corresponding conductive layer. 
     It should be noted that the variation described above can be applied to the second semiconductor element  2 B. Hence, the illustrated variation of  FIG. 20A  may be made to only one of the first semiconductor element  2 A and the second semiconductor element  2 B, or may be made to both the semiconductor elements  2 A,  2 B. Such selection may hold for the following variations described with reference to  FIGS. 20B and 20C . 
       FIG. 20B  is a plan view illustrating another variation of the first semiconductor element  2 A (or  2 B) shown in FIG.  20 . This second variation is different in configuration of the electrode pads  251 A,  252 A from that shown in  FIG. 20 . Specifically, in the second variation of  FIG. 20B , three electrode pads  251 A,  252 A are provided for each conductive layer  231 , like the variation of  FIG. 20A . However, the three electrode pads  251 A or  252 A for the respective conductive layers  231  are connected one after another via a single continuous connection member (wire  51  or  53  in the illustrated example), whereby these three electrode pads of each conductive layer  231  are electrically connected by an additional connection member besides the relevant conductive layer itself. Alternatively, the mutual connection of the three electrode pads may be made by more than one connection member such as two separate wires. In this case, one of the two connection members may be used for directly connecting the central electrode pad and the upper electrode pad to each other, and the other of the two connection members may be used for directly connecting the central electrode pad and the lower (i.e. remaining) electrode pad to each other. 
       FIG. 20C  is a plan view illustrating still another variation of the first semiconductor element  2 A (or  2 B) shown in  FIG. 20 . This third variation is different in configuration of the electrode pads  251 A,  252 A from that shown in  FIG. 20 . Specifically, in the third variation, two electrode pads  251 A or  252 A are provided for each conductive layer  231 , and these two electrode pads are mutually connected via a single connection member (wire  51  or  53  in the illustrated example). 
     It should be noted that the variations shown in  FIGS. 20A, 20B and 20C  can be applied to the electronic device A 1  of the first aspect shown in  FIG. 2 . 
     Turning back to  FIG. 20 , a second semiconductor element  3  is, for example, a control IC. The second semiconductor element  3  performs drive control of the first semiconductor elements  2 A and  2 B. The second semiconductor element  3  is electrically connected to the first semiconductor elements  2 A and  2 B. For example, the second semiconductor element  3  is electrically connected to the semiconductor regions  223 A (gate regions) of the first semiconductor element  2 A and controls the first semiconductor element  2 A by outputting control signals to the semiconductor regions  223 A (gate regions). Similarly, the second semiconductor element  3  is electrically connected to the semiconductor regions  223 B (gate regions) of the first semiconductor element  2 B and controls the first semiconductor element  2 B by outputting control signals to the semiconductor regions  223 B (gate regions). 
     The second semiconductor element  3  has an element main surface  301  that faces upward in the z direction. The element main surface  301  is formed by a protective film  32  that is similar to the protective films  24 A and  24 B. Openings are formed in portions of the protective film  32 , and electrode pads  31  are exposed from the openings. The electrode pads  31  are formed on the second semiconductor element  3 . Some of the connection members  5  (wires  55 ) are respectively connected to the electrode pads  31 . 
     The lead frame  4  forms a conductive path between the electronic component  1  and a circuit board for electronic apparatuses and the like due to the electronic device B 1  being mounted on the circuit board. The lead frame  4  supports the electronic component  1 . The constituent material of the lead frame  4  is, for example, Cu (copper), or a Cu alloy. The lead frame  4  can be formed of a metal plate. The plate thickness of the metal plate is, for example, about 0.2 mm. For example, Ni plating is applied to the outer surface of the lead frame  4 . As shown in  FIG. 20 , the lead frame  4  includes a lead  41 , a lead  42 , a lead  43 , a lead  44 , leads  45 , and a die pad  46 . The lead  41 , the lead  42 , the lead  43 , the lead  44 , the leads  45 , and the die pad  46  are spaced apart from each other. 
     As shown in  FIGS. 20 and 21 , the lead  41  includes two terminal portions  411  and a pad portion  412 . In a plan view, the pad portion  412  has an elongated rectangular shape that is elongated in the x direction and has a notch in a corner portion (lower right corner portion in  FIGS. 20 and 21 ) in the direction in which the lead  42  is located. The notch is provided so as not to come into contact with the lead  42 . The notch need not be provided as long as the pad portion  412  does not come into contact with the lead  42 . Bonding portions  51   a  of the wires  51  are bonded to the pad portion  412 . 
     In the lead  41 , as shown in  FIG. 21 , the pad portion  412  has a pad main surface  412   a  that faces upward in the z direction. The pad main surface  412   a  is flat. The pad main surface  412   a  has a first edge  412   b  and a second edge  412   c . The first edge  412   b  and the second edge  412   c  are located on mutually opposite sides in the x direction. The first edge  412   b  is an edge on the left side in  FIG. 21 . The second edge  412   c  is an edge on the right side in  FIG. 21 . 
     The pad portion  412  includes a first groove  415   a  and a second groove  415   b . As shown in  FIG. 22 , the first groove  415   a  and the second groove  415   b  are grooves that are recessed in the z direction from the pad main surface  412   a , and extend in the y direction. The first groove  415   a  and the second groove  415   b  are formed through, for example, half etching or punching. A depth (dimension in the z direction) D 1  of each of the first groove  415   a  and the second groove  415   b  is about half of a thickness (dimension in the z direction) D 0  of the lead  41 , and is about 0.1 mm. Note that the depth D 1  is set as appropriate according to the thickness D 0  of the lead  41 , such that the strength of the lead  41  can be retained. A width (dimension in the x direction) W 1  of each of the first groove  415   a  and the second groove  415   b  is about 0.1 mm, and the present disclosure is not limited thereto. The first groove  415   a  and the second groove  415   b  are both solid line-shaped (continuous overall) grooves. The first groove  415   a  and the second groove  415   b  are not limited to this, and may also be broken line-shaped (dotted line-shaped) grooves. The first groove  415   a  and the second groove  415   b  may also be curved line-shaped. 
     Ina plan view, the first groove  415   a  and the second groove  415   b  are parallel to each other and are parallel to the first edge  412   b  and the second edge  412   c . The first groove  415   a  is arranged toward the first edge  412   b , and the second groove  415   b  is arranged toward the second edge  412   c . A dimension W 41  ( FIG. 21 ) of an interval between the first edge  412   b  and the second edge  412   c  is about 1.2 mm. A dimension W 41   a  of an interval between the first groove  415   a  and the first edge  412   b  is about 0.3 mm, and a dimension W 41   b  of an interval between the second groove  415   b  and the second edge  412   c  is about 0.3 mm. It is preferable that the dimension W 41   a  and the dimension W 41   b  is 0.2 mm or greater and 1.0 mm or less. Even if there is a large amount of deformation such as warping, waviness, and the like of the lead frame  4 , as long as the dimension W 41   a  and the dimension W 41   b  are each 1.0 mm, it is possible to ensure a sufficient range in which the tip portions of the clamp members  90  press down the lead frame  4 . The first groove  415   a  and the second groove  415   b  are arranged in order to clarify the regions that are to be pressed by the tip portions of the clamp members  90  in the step of bonding the wires  51 . These regions are set such that even when pressed down by the tip portions of the clamp members  90  during the bonding of the bonding portions  51   a , the clamp members  90  do not inhibit the bonding. The bonding portions  51   a  are bonded between the first groove  415   a  and the second groove  415   b  of the pad main surface  412   a . That is, the bonding portions  51   a  are arranged on the side opposite to the first edge  412   b  with respect to the first groove  415   a , and are arranged on the side opposite to the second edge  412   c  with respect to the second groove  415   b.    
     As shown in  FIGS. 20 and 21 , a pair composed of a first pressing mark  419   a  and a second pressing mark  419   b  is formed on the pad portion  412 . The first pressing mark  419   a  and the second pressing mark  419   b  are formed in the step of bonding the wires  51 . The first pressing mark  419   a  and the second pressing mark  419   b  have forms that are recessed in the z direction from the pad main surface  412   a . The plan view shape of each of the first pressing mark  419   a  and the second pressing mark  419   b  is not limited to the shape shown in  FIGS. 20 and 21 , and depends on the shapes of the tip portions of the clamp members  90 . The first pressing mark  419   a  is arranged between the first groove  415   a  and the first edge  412   b . That is, the first pressing mark  419   a  is arranged on the side opposite to the bonding portion  51   a  with respect to the first groove  415   a . The second pressing mark  419   b  is arranged between the second groove  415   b  and the second edge  412   c . That is, the second pressing mark  419   b  is arranged on the side opposite to the bonding portion  51   a  with respect to the second groove  415   b.    
     Portions of the terminal portions  411  are exposed from the resin member  6 . Each terminal portion  411  is connected to the pad portion  412  at a portion covered by the resin member  6 . Each terminal portion  411  is bent in the z direction at a portion exposed from the resin member  6 . As shown in  FIG. 21 , the terminal portions  411  have terminal main surfaces  411   a  that face upward in the z direction. The terminal main surfaces  411   a  are flat and are mutually level with the pad main surface  412   a . The terminal portions  411  each include a fifth groove  415   c . The fifth grooves  415   c  are grooves that are recessed in the z direction from the terminal main surfaces  411   a  and extend in the x direction. The fifth grooves  415   c  are covered by the resin member  6  and are parallel to a resin side surface  632  (see  FIGS. 19 and 20 ). The fifth grooves  415   c  are arranged in order to clarify the outer boundary in the y direction of the region in which the bonding portions  51   a  in the lead  41  can be bonded. 
     As shown in  FIGS. 20 and 21 , the lead  42  includes a terminal portion  421  and a pad portion  422 . The pad portion  422  has an elongated rectangular shape that is elongated in the x direction in a plan view. The dimension in the x direction of the pad portion  422  is greater than that of the terminal portion  421  in a plan view. The pad portion  422  is covered by the resin member  6 . The pad portion  422  is not connected to any of the connection members  5 . The pad portion  422  is electrically insulated from the electronic component  1 . A portion of the terminal portion  421  is exposed from the resin member  6 . The terminal portion  421  is connected to the pad portion  422  at a portion covered by the resin member  6 . The terminal portion  421  is bent in the z direction at the portion exposed from the resin member  6 . 
     As shown in  FIGS. 20 and 21 , the lead  43  includes two terminal portions  431  and a pad portion  432 . In a plan view, the pad portion  432  has an elongated rectangular shape that is elongated in the x direction and has a notch in a corner portion (lower left corner portion in  FIGS. 20 and 21 ) in the direction in which the lead  42  is located. The notch is provided so as not to come into contact with the lead  42 . The notch may also not be provided, as long as the pad portion  432  does not come into contact with the lead  42 . Bonding portions  52   a  of the wires  52  are bonded to the pad portion  432 . 
     In the lead  43 , as shown in  FIG. 21 , the pad portion  432  has a pad main surface  432   a  that faces upward in the z direction. The pad main surface  432   a  is flat. The pad main surface  432   a  has a first edge  432   b  and a second edge  432   c . The first edge  432   b  and the second edge  432   c  are located on mutually opposite sides in the x direction. The first edge  432   b  is an edge on the left side in  FIG. 21 . The second edge  432   c  is an edge on the right side in  FIG. 21 . 
     The pad portion  432  includes a first groove  435   a  and a second groove  435   b . The first groove  435   a  and the second groove  435   b  are grooves that are recessed in the z direction from the pad main surface  432   a  and extend in the y direction. The first groove  435   a  and the second groove  435   b  are formed through, for example, half etching or punching. The depth of each of the first groove  435   a  and the second groove  435   b  is, for example, about half of the thickness of the lead  43 , and is about 0.1 mm. The width of each of the first groove  435   a  and the second groove  435   b  is, for example, about 0.1 mm. 
     Ina plan view, the first groove  435   a  and the second groove  435   b  are parallel to each other and are parallel to the first edge  432   b  and the second edge  432   c . The first groove  435   a  is arranged toward the first edge  432   b , and the second groove  435   b  is arranged toward the second edge  432   c . A dimension W 43  ( FIG. 21 ) of an interval between the first edge  432   b  and the second edge  432   c  is about 1.2 mm. A dimension W 43   a  of an interval between the first groove  435   a  and the first edge  432   b  is about 0.4 mm, and a dimension W 43   b  of an interval between the second groove  435   b  and the second edge  432   c  is about 0.3 mm. Note that it is desirable that the dimension W 43   a  and the dimension W 43   b  are each 0.2 mm or greater and 1.0 mm or less. The first groove  435   a  and the second groove  435   b  are arranged in order to clarify the regions that are to be pressed by the tip portions of the clamp members  90  in the step of bonding the wires  52 . These regions are set such that even when pressed down by the tip portions of the clamp members  90  during the bonding of the bonding portions  52   a , the clamp members  90  do not inhibit the bonding. The bonding portions  52   a  are bonded between the first groove  435   a  and the second groove  435   b  of the pad main surface  432   a . That is, the bonding portions  52   a  are arranged on the side opposite to the first edge  432   b  with respect to the first groove  435   a , and are arranged on the side opposite to the second edge  432   c  with respect to the second groove  435   b.    
     As shown in  FIGS. 20 and 21 , a pair composed of a first pressing mark  439   a  and a second pressing mark  439   b  is formed on the pad portion  432 . The first pressing mark  439   a  and the second pressing mark  439   b  are formed in the step of bonding the wires  52 . The first pressing mark  439   a  and the second pressing mark  439   b  have a form that is recessed in the z direction from the pad main surface  432   a . The plan view shapes of the first pressing mark  439   a  and the second pressing mark  439   b  are not limited to the shapes shown in  FIGS. 20 and 21 , and depend on the shapes of the tip portions of the clamp members  90 . The first pressing mark  439   a  is arranged between the first groove  435   a  and the first edge  432   b . That is, the first pressing mark  439   a  is arranged on the side opposite to the bonding portion  52   a  with respect to the first groove  435   a . The second pressing mark  439   b  is arranged between the second groove  435   b  and the second edge  432   c . That is, the second pressing mark  439   b  is arranged on the side opposite to the bonding portion  52   a  with respect to the second groove  435   b.    
     Portions of the terminal portions  431  are exposed from the resin member  6 . Each terminal portion  431  is connected to the pad portion  432  at a portion covered by the resin member  6 . Each terminal portion  431  is bent in the z direction at a portion exposed from the resin member  6 . As shown in  FIG. 21 , the terminal portions  431  have terminal main surfaces  431   a  that face upward in the z direction. The terminal main surfaces  431   a  are flat and are mutually level with the pad main surface  432   a . The terminal portions  431  each include a fifth groove  435   c . The fifth grooves  435   c  are grooves that are recessed in the z direction from the terminal main surfaces  431   a  and extend in the x direction. The fifth grooves  435   c  are covered by the resin member  6  and are parallel to a resin side surface  632 . The fifth grooves  435   c  are arranged in order to clarify the outer boundary in the y direction of the region that can be bonded to by the bonding portions  52   a  in the lead  43 . 
     As shown in  FIG. 20 , the lead  44  includes three terminal portions  441  and a pad portion  442 . The pad portion  442  has an elongated rectangular shape that is elongated in the x direction in a plan view. A bonding portion  53   a  of the wire  53  and a bonding portion  54   a  of the wire  54 , which will be described later, are bonded to the pad portion  442 . 
     In the lead  44 , as shown in  FIG. 20 , the pad portion  442  has a pad main surface  442   a  that faces upward in the z direction. The pad main surface  442   a  is flat. The pad main surface  442   a  has a first edge  442   b  and a second edge  442   c . The first edge  442   b  and the second edge  442   c  are located on end portions on mutually opposite sides in the x direction. The first edge  442   b  is an edge on the left side in  FIG. 20 . The second edge  442   c  is an edge on the right side in  FIG. 20 . 
     The pad portion  442  includes a first groove  445   a  and a second groove  445   b . The first groove  445   a  and the second groove  445   b  are grooves that are recessed in the z direction from the pad main surface  442   a  and extend in the y direction. The first groove  445   a  and the second groove  445   b  are formed through, for example, half etching or punching. The depth of each of the first groove  445   a  and the second groove  445   b  is about half of the thickness of the lead  44 , and is about 0.1 mm. The width of each of the first groove  445   a  and the second groove  445   b  is, for example, about 0.1 mm. 
     In a plan view, the first groove  445   a  and the second groove  445   b  are parallel to each other and are parallel to the first edge  442   b  and the second edge  442   c . The first groove  445   a  is arranged toward the first edge  442   b , and the second groove  445   b  is arranged toward the second edge  442   c . A dimension W 44  ( FIG. 28 ) of an interval between the first edge  442   b  and the second edge  442   c  is about 1.8 mm. A dimension W 44   a  of an interval between the first groove  445   a  and the first edge  442   b  is about 0.3 mm, and a dimension W 44   b  of an interval between the second groove  445   b  and the second edge  442   c  is about 0.3 mm. It is desirable that the dimension W 44   a  and the dimension W 44   b  are each 0.2 mm or greater and 1.0 mm or less. The first groove  445   a  and the second groove  445   b  are arranged in order to clarify the region that is to be pressed by the tip portions of the clamp members  90  in the step of bonding the wires  53  and  54 . This region is set such that even when pressed down by the tip portions of the clamp members  90  when bonding the bonding portion  53   a  and the bonding portion  54   a , the clamp members  90  do not inhibit the bonding. The bonding portion  53   a  and the bonding portion  54   a  are bonded between the first groove  445   a  and the second groove  445   b  of the pad main surface  442   a . That is, the bonding portion  53   a  and the bonding portion  54   a  are arranged on the side opposite to the first edge  442   b  with respect to the first groove  445   a , and are arranged on the side opposite to the second edge  442   c  with respect to the second groove  445   b.    
     As shown in  FIG. 20 , a pair composed of a first pressing mark  449   a  and a second pressing mark  449   b  is formed on the pad portion  442 . The first pressing mark  449   a  and the second pressing mark  449   b  are formed in the step of bonding the wires  53  and  54 . The first pressing mark  449   a  and the second pressing mark  449   b  have a form that is recessed in the z direction from the pad main surface  442   a . The plan view shapes of the first pressing mark  449   a  and the second pressing mark  449   b  are not limited to the shapes shown in  FIG. 20 , and depend on the shapes of the tip portions of the clamp members  90 . The first pressing mark  449   a  is arranged between the first groove  445   a  and the first edge  442   b . That is, the first pressing mark  449   a  is arranged on the side opposite to the bonding portion  53   a  and the bonding portion  54   a  with respect to the first groove  445   a . The second pressing mark  449   b  is arranged between the second groove  445   b  and the second edge  442   c . That is, the second pressing mark  449   b  is arranged on the side opposite to the bonding portion  53   a  and the bonding portion  54   a  with respect to the second groove  445   b.    
     Portions of the terminal portions  441  are exposed from the resin member  6 . Each terminal portion  441  is connected to the pad portion  442  at a portion covered by the resin member  6 . Each terminal portion  441  is bent in the z direction at a portion exposed from the resin member  6 . As shown in  FIG. 20 , the terminal portions  441  have terminal main surfaces  441   a  that face upward in the z direction. The terminal main surfaces  441   a  are flat and are mutually level with the pad main surface  442   a . The terminal portions  441  each include a fifth groove  445   c . The fifth grooves  445   c  are grooves that are recessed in the z direction from the terminal main surface  441   a  and extend in the x direction. The fifth grooves  445   c  are covered by the resin member  6  and are parallel to a resin side surface  632 . The fifth grooves  445   c  are arranged in order to clarify the outer boundary in the y direction of the region to which the bonding portion  53   a  and the bonding portion  54   a  can be bonded on the lead  44 . 
     The first groove  415   a  and the second groove  415   b  of the lead  41  do not need to be parallel to each other. Similarly, the first groove  435   a  and the second groove  435   b  of the lead  43  do not need to be parallel to each other, and the first groove  445   a  and the second groove  445   b  of the lead  44  do not need to be parallel to each other. The groove  415   c  of the lead  41 , the groove  435   c , of the lead  43 , and the groove  445   c  of the lead  44  are parallel to the resin side surface  632 , and are parallel to each other. 
     As shown in  FIG. 20 , the leads  45  include terminal portions  451  and pad portions  452 . The pad portions  452  have shapes whose central portions in the y direction are narrowed in a plan view. Wires  55  are bonded to the pad portions  452 . In the pad portion  452 , for example, Ag plating is performed on Ni plating. For ease of comprehension, the regions to which Ag plating is applied are indicted by a dot pattern in  FIG. 20 . 
     Portions of the terminal portions  451  are exposed from the resin member  6 . The terminal portions  451  are connected to the pad portions  452  at portions covered by the resin member  6 . Each terminal portion  451  is bent in the z direction at a portion exposed from the resin member  6 . 
     The electronic component  1  is mounted on the die pad  46 . In the example shown in the drawings, the die pad  46  is not electrically connected to the electronic component  1 , but the die pad  46  may also be electrically connected to the electronic component  1 . As shown in  FIGS. 20 and 24 , the die pad  46  includes a pad portion  461  and extended portions  462 . 
     As shown in  FIG. 20 , the pad portion  461  includes a die pad main surface  461   a  that faces upward in the z direction. The die pad main surface  461   a  is flat. The die pad main surface  461   a  has a first edge  461   b  and a second edge  461   c . The first edge  461   b  and the second edge  461   c  are located on edge portions on mutually opposite sides in the x direction. The first edge  461   b  is an edge on the left side in  FIG. 20 . The second edge  461   c  is an edge on the right side in  FIG. 20 . 
     The pad portion  461  includes a third groove  465   a  and a fourth groove  465   b . The third groove  465   a  and the fourth groove  465   b  are grooves that are recessed in the z direction from the die pad main surface  461   a , and extend in the y direction. The third groove  465   a  and the fourth groove  465   b  are formed through, for example, half etching or punching. The depth of each of the third groove  465   a  and the fourth groove  465   b  is, for example, about half of the thickness of the die pad  46 , and is about 0.1 mm. The width of each of the third groove  465   a  and the fourth groove  465   b  is, for example, about 0.1 mm. 
     In a plan view, the third groove  465   a  and the fourth groove  465   b  are parallel to each other and are parallel to the first edge  461   b  and the second edge  461   c . The third groove  465   a  is arranged toward the first edge  461   b , and the fourth groove  465   b  is arranged toward the second edge  461   c . A dimension W 46  ( FIG. 28 ) of an interval between the first edge  461   b  and the second edge  461   c  is about 4.2 mm. A dimension W 46   a  of the interval between the third groove  465   a  and the first edge  461   b  is about 0.3 mm, and a dimension W 46   b  of the interval between the fourth groove  465   b  and the second edge  461   c  is about 0.5 mm. It is desirable that the dimension W 46   a  and the dimension W 46   b  are each 0.2 mm or greater and 1.0 mm or less. The third groove  465   a  and the fourth groove  465   b  are arranged in order to clarify the region that is to be pressed down by the tip portions of the clamp members  95  in the step of bonding the wires  51  to  55 . The electronic component  1  is mounted between the third groove  465   a  and the fourth groove  465   b  of the die pad main surface  461   a . That is, the electronic component  1  is mounted on the side opposite to the first edge  461   b  with respect to the third groove  465   a , and is arranged on the side opposite to the second edge  461   c  with respect to the fourth groove  465   b.    
     As shown in  FIG. 20 , a pair composed of a third pressing mark  469   a  and a fourth pressing mark  469   b  are formed on the pad portion  461 . The third pressing mark  469   a  and the fourth pressing mark  469   b  are formed in the step of bonding the wires  51  to  55 . The third pressing mark  469   a  and the fourth pressing mark  469   b  have a form that is recessed in the z direction from the die pad main surface  461   a . The plan view shapes of the third pressing mark  469   a  and the fourth pressing mark  469   b  are not limited to the shapes shown in  FIG. 20 , and depend on the shapes of the tip portions of clamp members  95 . The third pressing mark  469   a  is arranged between the third groove  465   a  and the first edge  461   b . That is, the third pressing mark  469   a  is arranged on the side opposite to the electronic component  1  with respect to the third groove  465   a . The fourth pressing mark  469   b  is arranged between the fourth groove  465   b  and the second edge  461   c . That is, the fourth pressing mark  469   b  is arranged on the side opposite to the electronic component  1  with respect to the fourth groove  465   b.    
     Extended portions  462  extend from the pad portion  461 . End surfaces  462   a  are exposed from the resin member  6  at the extended portions  462 . In the example shown in the drawings, the underside surface of the pad portion  461 , which faces downward in the z direction, is covered by the resin member  6 , but the underside surface may also be exposed from the resin member  6 . 
     As shown in  FIG. 20 , the lead  41 , the lead  42 , the lead  43 , and some of the leads  45  are provided on one side in the y direction of the die pad  46  in the lead frame  4 , in a plan view. The terminal portions  411 ,  421 ,  431 , and  451  overlap with each other in a view in the x direction. The lead  44  and the other leads  45  are arranged on the other side of the die pad  46  in the y direction in a plan view. The terminal portions  441  and  451  overlap with each other in a view in the x direction. As shown in  FIGS. 20 and 21 , the terminal portions  411  of the lead  41 , the terminal portion  421  of the lead  42 , and the terminal portions  431  of the lead  43  are arranged side by side in the x direction in a plan view. As shown in  FIGS. 20 and 21 , in a plan view, the terminal portion  421  of the lead  42  is interposed between the terminal portions  411  of the lead  41  and the terminal portions  431  of the lead  43 . 
     The separation distances in the y direction between the leads  41 ,  43 ,  44 , and  45  and the die pad  46  are substantially the same, and are each, for example, about 0.15 mm. The separation distance in the y direction between the lead  42  and the die pad  46  is greater than each of the separation distances in the y direction between the leads  41 ,  43 ,  44 , and  45  and the die pad  46 . The dimensions in the x direction of the terminal portions  411 ,  421 ,  431 ,  441 , and  451  of the leads  41  to  45  are each, for example, about 0.25 mm. The separation distance between each of two of the terminals  411 ,  421 ,  431 ,  441 , and  451  that are adjacent to each other in the x direction is about 0.25 mm. 
     The connection members  5  each electrically connect two members that are spaced apart from each other. Each connection member  5  electrically connects the electronic component  1  (one of the first semiconductor elements  2 A and  2 B and the second semiconductor element  3 ) and the lead frame  4 . In the example shown in the drawings, the connection members  5  are wires with circular cross-sections. As shown in  FIG. 20 , the connection members  5  include the two wires  51 , the two wires  52 , the wire  53 , the wire  54 , and the wires  55 . 
     The two wires  51  electrically connect the electrode pads  251 A of the first semiconductor element  2 A and the pad portion  412  of the lead  41 . As shown in  FIG. 20 , the wires  51  each have a first end bonded to an electrode pad  251 A and a second end bonded to the pad portion  412 . The second ends (bonding portions  51   a  shown in  FIG. 21 ) of the wires  51  are bonded between the first groove  415   a  and the second groove  415   b  of the pad main surface  412   a , and intersect a line segment connecting the first pressing mark  419   a  and the second pressing mark  419   b.    
     The two wires  52  electrically connect the electrode pads  252 B of the first semiconductor element  2 B and the pad portion  432  of the lead  43 . As shown in  FIG. 20 , the wires  52  each have a first end bonded to an electrode pad  252 B and a second end bonded to the pad portion  432 . The second ends (bonding portions  52   a  shown in  FIG. 21 ) of the wires  52  are bonded between the first groove  435   a  and the second groove  435   b  of the pad main surface  432   a , and intersect a line segment connecting the first pressing mark  439   a  and the second pressing mark  439   b.    
     The wire  53  electrically connects the electrode pad  252 A of the first semiconductor element  2 A and the pad portion  442  of the lead  44 . As shown in  FIG. 20 , the wire  53  has a first end bonded to the electrode pad  252 A and a second end bonded to the pad portion  442 . The second end (bonding portion  53   a ) of the wire  53  is bonded between the first groove  445   a  and the second groove  445   b  of the pad main surface  442   a  and intersects a line segment connecting the first pressing mark  449   a  and the second pressing mark  449   b.    
     The wire  54  electrically connects the electrode pad  251 B of the first semiconductor element  2 B and the pad portion  442  of the lead  44 . As shown in  FIG. 20 , the wire  54  has a first end bonded to the electrode pad  251 B and a second end bonded to the pad portion  442 . The second end (bonding portion  54   a ) of the wire  54  is bonded between the first groove  445   a  and the second groove  445   b  of the pad main surface  442   a  and intersects a line segment connecting the first pressing mark  449   a  and the second pressing mark  449   b.    
     The wires  55  electrically connect the electrode pads  31  of the second semiconductor element  3  and the pad portions  452  of the leads  45 . As shown in  FIG. 20 , the wires  55  each have one end bonded to an electrode pad  31  and another end bonded to a pad portion  452  of a lead  45 . 
     The constituent material of the wires  51  to  54  is, for example, Al (aluminum). The thicknesses (diameters) of the wires  51  to  54  are the same, and are each, for example, about 125 to 200 μm. The constituent material of the wires  55  is, for example, Au (gold). Note that the constituent material of the wires  55  may also be Cu or Al. The thickness (diameter) of each of the wires  55  is smaller than the thickness (diameter) of each of the wires  51  to  54 . The thickness (diameter) of each wire  55  is, for example, 10 to 50 μm. If both of the first semiconductor elements  2 A and  2 B are, for example, MOSFETs, each of the wires  51  to  54  is bonded to one of the drain terminals (electrode pads  251 A and  251 B) and the source terminals (electrode pads  252 A and  252 B) of the semiconductor elements  2 A and  2 B. A relatively large current flows in these drain terminals and source terminals. Accordingly, compared to the wires  55 , thick wires composed of Al are used as the wires  51  to  54 . 
     Bonding ribbons may also be used as the connection members instead of the above-described wires  51  to  54 . 
     As shown in  FIGS. 19, 20, and 23 to 25 , the resin member  6  covers portions of the electronic component  1  and the lead frame  4 , and the connection members  5 . The resin member  6  is composed of an insulating resin material. The constituent material of the resin member  6  is, for example, black epoxy resin. The resin member  6  has, for example, a rectangular shape in a plan view. The resin member  6  has a resin main surface  61 , a resin underside surface  62 , and resin side surfaces  63 . 
     The resin main surface  61  and the resin underside surface  62  are spaced apart from each other in the z direction. The resin side surfaces  63  are connected to both the resin main surface  61  and the resin underside surface  62  and are located between the resin main surface  61  and the resin underside surface  62  in the z direction. The resin side surfaces  63  include a pair of resin side surfaces  631  that are spaced apart from each other in the x direction, and a pair of resin side surfaces  632  that are spaced apart from each other in the y direction. The leads  41  to  45  protrude from one of the pair of resin side surfaces  632 . 
       FIG. 27  is a circuit diagram for when an electronic device B 1  is constituted as a DC/DC converter. 
     In  FIG. 27 , reference signs sw 1  and sw 2  indicate switching elements. Reference sign Dr indicates a control circuit that controls the switching operations of the switching elements sw 1  and sw 2 , various types of protective function operations, and the like. Reference signs R 1  to R 3  indicate resistors, reference sign Vref indicates an internal reference voltage circuit, reference sign ss indicates a soft start circuit, reference sign pgd indicates a power good circuit, and reference sign amp indicates an error amplifier that receives the Vref output voltage and the FB terminal voltage as inputs. For example, one of the switching elements sw 1  and sw 2  corresponds to the first semiconductor element  2 A, and the other corresponds to the first semiconductor element  2 B. The component including the internal reference voltage circuit Vref, the soft start circuit ss, the power good circuit pgd, the error amplifier amp, and the control circuit Dr corresponds to the second semiconductor element  3 . 
     A terminal PVIN is a power source input terminal for a DC/DC converter. The terminal PVIN is connected to, for example, a terminal on a high potential side of a DC power source (not shown). The terminal PVIN corresponds to the lead  41  of the electronic device B 1 . A terminal PGND is a ground terminal of the DC/DC converter. The terminal PGND is connected to, for example, a terminal on a low potential side of the above-described DC power source. The terminal PGND corresponds to the lead  43  of the electronic device B 1 . A terminal SW is an output terminal of the DC/DC converter. The terminal SW corresponds to the lead  44  of the electronic device B 1 . 
     A terminal AVIN is an analog portion power source input terminal. The terminal AGND is an analog portion ground terminal. A terminal EN is a device control terminal. A terminal FB is an output voltage feedback terminal. A terminal SS is a terminal for setting a soft start time. A terminal COMP is an ERRAMP output terminal. A terminal PGD is a power good terminal. A terminal CTL is a terminal for controlling various functions. A terminal MODE may also be used instead of the terminal CTL. The terminal MODE is a terminal for switching between various modes. The terminal AVIN, the terminal AGND, the terminal EN, the terminal FB, the terminal SS, the terminal COMP, the terminal PGD, and the terminal CTL (or the terminal MODE) each correspond to one of the leads  45 . 
     Next, a method for manufacturing the electronic device B 1  will be described with reference to  FIGS. 28 to 33 . 
     First, as shown in  FIG. 28 , the lead frame  4  is prepared (preparation step). For example, the lead frame  4  can be formed by carrying out punching, etching, bending, and the like on a copper plate. As shown in  FIG. 28 , the lead frame  4  at this time includes the leads  41  to  45 , the die pad  46 , and a tie bar  49 , and the leads  41  to  45  and the die pad  46  are connected by the tie bar  49 . A first groove  415   a , a second groove  415   b , and fifth grooves  415   c  are formed on the pad portion  412  of the lead  41 , a first groove  435   a , a second groove  435   b , and fifth grooves  435   c  are formed on the pad portion  432  of the lead  43 , a first groove  445   a , a second groove  445   b , and fifth grooves  445   c  are formed on the pad portion  442  of the lead  44 , and a third groove  465   a  and a fourth groove  465   b  are formed on the pad portion  461  of the die pad  46 . The first grooves  415   a ,  435   a , and  445   a , the second grooves  415   b ,  435   b , and  445   b , the third groove  465   a , the fourth groove  465   b , and the fifth grooves  415   c ,  435   c , and  445   c  are formed through, for example, half etching or punching. 
     Next, as shown in  FIG. 29 , the electronic component  1  is mounted on the lead frame  4  (mounting step or die mounting step). Specifically, the electronic component  1  is adhered to the pad portion  461  of the die pad  46  via a bonding material. At this time, the electronic component  1  is arranged between the third groove  465   a  and the fourth groove  465   b  of the die pad main surface  461   a . For example, if the bonding material is solder, solder paste is applied to the lead frame  4 , and the electronic component  1  is mounted on the applied solder paste. At this time, the electronic component  1  is placed in an orientation in which the electrode pads  251 A,  252 A,  251 B,  252 B, and  31  face upward in the z direction. Next, reflow processing is performed, and the solder paste is melted and then allowed to solidify. Accordingly, the electronic component  1  is bonded to the pad portion  461  of the die pad  46 . Ag paste, sintered metal, or the like may also be used instead of solder as the bonding material. The bonding material is not limited to being conductive, and may also be insulating. 
     Next, the connection members  5  (wires  51  to  55 ) are bonded (bonding step). The wires  51  to  54  are, for example, Al bonding wires. The wires  51  to  54  are bonded through wedge bonding. The wires  55  are, for example, Au bonding wires. The wires  55  are bonded through ball bonding. It is sufficient to use a known bonding apparatus in the bonding of the wires  51  to  55 . The bonding apparatus includes a capillary or wedge tool (tool for wedge bonding) and a cutter. 
     In the bonding step, prior to the bonding of the wires  51  to  55 , the lead frame  4  is set on a jig (not shown). As one example, the jig is formed so as to match the shape of the lead frame  4 , and supports the lead frame  4  from a side opposite to the side on which the electronic component  1  is mounted. Clamp members  90  and clamp members  95  are attached to the jig (see  FIG. 30 ). The clamp members  90  are, for example, narrow rod-shaped overall, and have tapered tips. As shown in  FIGS. 30 and 31 , the tips come into contact with the pad portion  412  of the lead  41 , the pad portion  432  of the lead  43 , and the pad portion  442  of the lead  44 , and press down the pad portions. Accordingly, the pad portions  412 ,  432 , and  442  are fixed. On the other hand, the clamp members  95  are plate shapes that are wider overall than the clamp members  90 , and have tips (tip edges) that are formed with relatively smaller widths in a plan view (see  FIG. 30 ). These tips come into contact with the pad portion  461  of the die pad  46  and press down the pad portion. Accordingly, the pad portion  461  is fixed. Furthermore, other portions (e.g., the tie bar  49  and the like) of the lead frame  4  may also be pressed down using other clamp members. In the example shown in the drawings, the tips of the clamp members  90  and  95  extend straight with respect to the portions on the base side (portions connected to the tip), but the present disclosure is not limited to this. For example, the tips of the clamp members  90  and  95  may also be attached to the portions on the base side so as to form a predetermined angle α (e.g., 180 degrees&gt;α≥90 degrees). That is, the tips and the portions on the base side of the clamp members  90  and  95  may also be bent overall. 
     In the example shown in  FIGS. 30 and 31 , the area between the first groove  415   a  and the first edge  412   b  of the pad main surface  412   a  and the area between the second groove  415   b  and the second edge  412   c  of the pad main surface  412   a  are pressed down by the clamp members  90  in order to fix the pad portion  412  of the lead  41 . At this time, as shown in  FIG. 32 , the first pressing mark  419   a  and the second pressing mark  419   b  are formed due to the pressing force of the clamp members  90  on the portions pressed by the clamp members  90 . Similarly, the area between the first groove  435   a  and the first edge  432   b  of the pad main surface  432   a  and the area between the second groove  435   b  and the second edge  432   c  of the pad main surface  432   a  are pressed down by the clamp members  90  in order to fix the pad portion  432  of the lead  43 . At this time, as shown in  FIG. 32 , the first pressing mark  439   a  and the second pressing mark  439   b  are formed due to the pressing force of the clamp members  90  on the portions pressed by the clamp members  90 . Furthermore, the area between the first groove  445   a  and the first edge  442   b  of the pad main surface  442   a  and the area between the second groove  445   b  and the second edge  442   c  of the pad main surface  442   a  are pressed down by the clamp members  90  in order to fix the pad portion  442  of the lead  44 . At this time, as shown in  FIG. 32 , the first pressing mark  449   a  and the second pressing mark  449   b  are formed due to the pressing force of the clamp members  90  on the portions pressed by the clamp members  90 . Furthermore, the area between the third groove  465   a  and the first edge  461   b  and the area between the fourth groove  465   b  and the second edge  461   c  on the die pad main surface  461   a  are pressed down by the clamp members  95  in order to fix the pad portion  461  of the die pad  46 . At this time, as shown in FIG.  32 , the third pressing mark  469   a  and the fourth pressing mark  469   b  are formed due to the pressing force of the clamp members  95  on the portions pressed by the clamp members  95 . 
     Before executing the bonding step, the arrangement and directions of the tip portions of the clamp members  90  and  95  are adjusted in advance and the clamp members  90  and  95  are fixed to the jig. During this adjustment, the positions of the tips of the clamp members  90  and  95  are adjusted using the first grooves  415   a ,  435   a , and  445   a , the second grooves  415   b ,  435   b , and  445   b , the third groove  465   a , the fourth groove  465   b , and the fifth grooves  415   c ,  435   c , and  445   c  of the lead frame  4  set on the jig as markers. The positions of the tips of the clamp members  90  and  95  may also be adjusted by a worker through a manual operation using the grooves as markers, and the positions of the tips may also be adjusted through an operation of actuators that move the clamp members  90  and  95 . Alternatively, the positions may also be adjusted automatically by the above-described actuators based on an image of the lead frame  4  shot from above, and based on the positional relationship between the grooves and the clamp members  90  and  95 . The grooves that are to be used as markers for the adjustment may also be parallel or non-parallel to the outer edge of the lead frame. 
     The bonding of the wires  51  to  55  is performed using the procedure indicated below in a state in which the portions of the lead frame  4  are fixed by the clamp members  90  and  95 . 
     In the bonding of the wires  51 , first, the tip of a wedge tool to which a wire composed of Al is appended is brought into contact with the electrode pad  251 A of the electronic component  1 . Then, the wire is bonded to the electrode pad  251 A by applying pressure and ultrasonic vibration from the wedge tool to the wire. Next, the tip of the wedge tool is moved from the electrode pad  251 A to the pad portion  412  of the lead  41  while pulling out the wire. Then, the wire is bonded to the pad portion  412  by applying pressure and ultrasonic vibration from the wedge tool to the wires. At this time, the wire is bonded to the near side with respect to the fifth grooves  415   c  (the side close to the electrode pad  251 A in the y direction; the same applies hereinafter in the positional relationship with the electrode pads) between the first groove  415   a  and the second groove  415   b  of the pad main surface  412   a . Portions of the wires  51  pressed by the tip of the wedge tool deform, whereby the bonding portions  51   a  bonded to the pad portion  412  are formed. The bonding portions  51   a  intersect a line segment connecting two locations (the first pressing mark  419   a  and the second pressing mark  419   b  shown in  FIG. 32 ) of the pad portion  412  that were pressed by the clamp members  90 . After this bonding, the wires are cut using a cutter. Accordingly, as shown in  FIG. 32 , the wires  51  that connect the electrode pad  251 A and the pad portion  412  are formed. 
     The bonding of the wires  52  to  54 , which are composed of Al similarly to the wires  51 , is performed similarly to the bonding of the wires  51 . As shown in  FIG. 32 , the wires  52  each have one end bonded to an electrode pad  252 B and another end (bonding portion  52   a ) bonded to the pad portion  432  of the lead  43 . The bonding portions  52   a  are bonded on the near side with respect to the fifth grooves  435   c , between the first groove  435   a  and the second groove  435   b  on the pad main surface  432   a . The bonding portions  52   a  intersect a line segment connecting two locations (the first pressing mark  439   a  and the second pressing mark  439   b  shown in  FIG. 32 ) of the pad portion  432  that were pressed by the clamp members  90 . As shown in  FIG. 32 , the wire  53  has one end bonded to the electrode pad  252 A and another end (bonding portion  53   a ) bonded to the pad portion  442  of the lead  44 . The bonding portion  53   a  is bonded on the near side with respect to the fifth grooves  445   c , between the first groove  445   a  and the second groove  445   b  on the pad main surface  442   a . The bonding portion  53   a  intersects a line segment connecting two locations (the first pressing mark  449   a  and the second pressing mark  449   b  shown in  FIG. 32 ) of the pad portion  442  that were pressed by the clamp members  90 . As shown in  FIG. 32 , the wire  54  is formed with one end bonded to the electrode pad  251 B and another end (bonding portion  54   a ) bonded to the pad portion  442  of the lead  44 . The bonding portion  54   a  is bonded on the near side with respect to the fifth grooves  445   c , between the first groove  445   a  and the second groove  445   b  on the pad main surface  442   a . The bonding portion  54   a  intersects a line segment connecting two locations (the first pressing mark  439   a  and the second pressing mark  439   b  shown in  FIG. 32 ) of the pad portion  442  that were pressed by the clamp members  90 . 
     Thereafter, the wires  55  are respectively bonded to the electrode pads  31  and the pad portions  452  of the leads  45  through ball bonding. As shown in  FIG. 32 , the electronic component  1  and the lead frame  4  are connected by the wires  51  to  55  through the above-described bonding step. 
     Next, as shown in  FIG. 33  (see the two-dot chain lines), the resin member  6  is formed. The formation of the resin member  6  is performed through, for example, transfer molding. The constituent material of the resin member  6  is, for example, epoxy resin. 
     Next, the lead frame  4  is cut and divided for each electronic component  1 . The cutting of the lead frame  4  is performed through, for example, forming lead processing using a punch mold (cut mold), blade dicing, and the like. 
     The electronic device B 1  shown in  FIGS. 19 to 26  is obtained through the above-described steps. Note that the above-described manufacturing method is an example, and the present disclosure is not limited thereto. 
     The actions and effects of the electronic device B 1  and the actions and effects of the method for manufacturing the electronic device B 1  are as follows. 
     According to the configuration of the electronic device B 1 , when the wires  51  are bonded to the pad portion  412  of the lead  41 , the pad portion  412  is pressed down by the clamp members  90 . Accordingly, it is possible to suppress a case in which the pad portion  412  shakes or deforms due to the pressure and vibration applied during the bonding. Accordingly, the wires  51  can be suitably bonded to the pad portion  412 . Similarly, when the wires  52  are to be bonded to the pad portion  432  of the lead  43 , the pad portion  432  is pressed down by the clamp members  90 , and therefore it is possible to suppress a case in which the pad portion  432  shakes or deforms due to the pressure and vibration applied during bonding, and the wires  52  can be suitably bonded to the pad portion  432 . Also, when the wire  53  and the wire  54  are to be bonded to the pad portion  442  of the lead  44 , the pad portion  442  is pressed down by the clamp members  90 , and therefore it is possible to suppress a case in which the pad portion  442  shakes or deforms due to the pressure and vibration applied during bonding, and the wire  53  and the wire  54  can be suitably bonded to the pad portion  442 . 
     According to the configuration of the electronic device B 1 , the pad portion  412  includes the first groove  415   a  and the second groove  415   b  for clarifying the regions to be pressed down by the clamp members  90 . Similarly, the pad portion  432  includes the first groove  435   a  and the second groove  435   b  for clarifying the regions to be pressed down by the clamp members  90 . Also, the pad portion  442  includes the first groove  445   a  and the second groove  445   b  for clarifying the regions to be pressed down by the clamp members  90 . Accordingly, in the adjustment of the positions of the tips of the clamp members  90 , which is performed before the bonding step is executed, the tips of the clamp members  90  can be arranged at positions that do not hinder the bonding of the wires  51  to  54 , using the first grooves  415   a ,  435   a , and  445   a , and the second grooves  415   b ,  435   b , and  445   b  as markers. Also, even during the manufacture of the electronic device B 1 , it is possible to check whether or not the positions of the tips of the clamp members  90  are suitable positions. If a tip of a clamp member  90  is at a position past one of the grooves, it is sufficient that the line of the bonding step is stopped temporarily, the tip of the clamp member  90  is adjusted to a suitable position, and thereafter the line is resumed. For example, if the pad portion  412  does not include the first groove  415   a  and the second groove  415   b , the regions in which the tip portions of the clamp portions  90  can be arranged will also not be clear. Accordingly, there is a possibility that the clamp member  90  and the wires  51  or the wedge tool for bonding the wires  51  will come into contact with each other. Since it is possible to prevent contact between the clamp member  90  and the wires  51  or the wedge tool during the bonding of the wires  51 , the wires  51  can be suitably bonded to the pad portion  412  in the electronic device B 1 . 
     According to the configuration of the electronic device B 1 , the lead  41  includes fifth grooves  415   c  for clarifying the outer boundary in the y direction of the region in which the bonding portions  51   a  can be bonded. Accordingly, in the bonding step, the bonding portions  51   a  can be bonded in a suitable region surrounded by the fifth grooves  415   c , the first groove  415   a , and the second groove  415   b . Similarly, the lead  43  includes the fifth grooves  435   c  for clarifying the outer boundary in the y direction of the region in which the bonding portion  52   a  can be bonded. Accordingly, in the bonding step, the bonding portions  52   a  can be bonded in a suitable region surrounded by the fifth grooves  435   c , the first groove  435   a , and the second groove  435   b . Also, the lead  44  includes the fifth grooves  445   c  for clarifying the outer boundary in the y direction of the region in which the bonding portion  53   a  and the bonding portion  54   a  can be bonded. Accordingly, in the bonding step, the bonding portion  53   a  and the bonding portion  54   a  can be bonded in a suitable region surrounded by the fifth grooves  445   c , the first groove  445   a , and the second groove  445   b.    
     According to the configuration of the electronic device B 1 , the first pressing mark  419   a  and the second pressing mark  419   b , which are blemishes resulting from being pressed by the clamp members  90  during the bonding of the wires  51 , are formed on the pad portion  412  of the lead  41 . It is preferable that the bonding portions  51   a  of the wires  51  intersect a line segment connecting the first pressing mark  419   a  and the second pressing mark  419   b . According to this configuration, it is possible to suitably prevent the pad portion  412  from shaking and deforming due to the pressure and vibration applied when bonding the wires  51  to the pad portion  412 . Similarly, the first pressing mark  439   a  and the second pressing mark  439   b , which are blemishes resulting from being pressed by the clamp members  90  during the bonding of the wires  52 , are preferably formed on the pad portion  432  of the lead  43 , and the bonding portions  52   a  preferably intersect a line segment connecting the first pressing mark  439   a  and the second pressing mark  439   b . According to this configuration, it is possible to suitably prevent the pad portion  432  from shaking and deforming due to the pressure and vibration applied when bonding the wires  52  to the pad portion  432 . Also, it is preferable that the first pressing mark  449   a  and the second pressing mark  449   b , which are blemishes resulting from being pressed by the clamp members  90  during the bonding of the wire  53  and the wire  54 , are formed on the pad portion  442  of the lead  44 , and the bonding portion  53   a  and the bonding portion  54   a  intersect a line segment connecting the first pressing mark  449   a  and the second pressing mark  449   b . According to this configuration, it is possible to suitably prevent the pad portion  442  from shaking or deforming due to the pressure and vibration applied when the wire  53  and the wire  54  are bonded to the pad portion  442 . 
     According to the configuration of the electronic device B 1 , when the wires  51  to  55  are to be bonded to the electrode pads of the electronic component  1 , the pad portion  461  of the die pad  46  on which the electronic component  1  is mounted is pressed down by the clamp members  95 . Accordingly, it is possible to suppress a case in which the pad portion  461  shakes or deforms due to the pressure and vibration applied during the bonding. This makes it possible to suitably bond the wires  51  to  55  to the electrode pads of the electronic component  1 . Also, the pad portion  461  includes the third groove  465   a  and the fourth groove  465   b  for clarifying the region to be pressed by the clamp members  95 . Accordingly, in the mounting step, the electronic component  1  can be mounted at a suitable position on the die pad main surface  461   a  using the third groove  465   a  and the fourth groove  465   b  as markers. Also, in the adjustment of the positions of the tips of the clamp members  95 , which is performed before the bonding step is executed, the tips of the clamp members  95  can be arranged using the third groove  465   a  and the fourth groove  465   b  as markers. 
     According to the configuration of the electronic device B 1 , the first grooves  415   a ,  435   a , and  445   a , the second grooves  415   b ,  435   b , and  445   b , the third groove  465   a , the fourth groove  465   b , the fifth grooves  415   c ,  435   c , and  445   c , and the first pressing marks  419   a ,  439   a , and  449   a , the second pressing marks  419   b ,  439   b , and  449   b , the third pressing mark  469   a , and the fourth pressing mark  469   b  are all covered by the resin member  6 . Accordingly, these portions do not appear on the exterior. 
     In the example shown in the drawings, a case was described in which the first groove  415   a  and the second groove  415   b  are parallel to each other and are parallel to the first edge  412   b  and the second edge  412   c , but the present disclosure is not limited to this. The first groove  415   a  may also be inclined with respect to the first edge  412   b . Also, the second groove  415   b  may also be inclined with respect to the second edge  412   c . Similarly, the first groove  435   a  may also be inclined with respect to the first edge  432   b , and the second groove  435   b  may also be inclined with respect to the second edge  432   c . Also, the first groove  445   a  may also be inclined with respect to the first edge  442   b , and the second groove  445   b  may also be inclined with respect to the second edge  442   c.    
     Based on  FIG. 34 , an electronic device B 2  according to a second embodiment of a second aspect will be described.  FIG. 34  is a plan view showing a portion of the constituent elements of the electronic device B 2 , and corresponds to  FIG. 21 . 
     The arrangement of the fifth groove  415   c  and the fifth groove  435   c  of the electronic device B 2  differs from that of the electronic device B 1 . Also, the arrangement of the fifth groove  445   c  in the electronic device B 2  (see  FIG. 32 ) differs from that of the electronic device B 1 , although this is not shown in  FIG. 34 . Specifically, the fifth groove  415   c  is arranged on the pad portion  412  in the electronic device B 2 . The fifth groove  415   c  is a groove that is recessed in the z direction from the pad main surface  412   a , and extends in the x direction. The fifth groove  415   c  is covered by the resin member  6  and is parallel to a resin side surface  632 . The fifth groove  415   c  is arranged in order to clarify the outer boundary in the y direction of the region in which the bonding portions  51   a  can be bonded in the lead  41 . Similarly, the fifth groove  435   c  is arranged on the pad portion  432 . The fifth groove  435   c  is a groove that is recessed in the z direction from the pad main surface  432   a , and extends in the x direction. The fifth groove  435   c  is covered by the resin member  6  and is parallel to the resin side surface  632 . The fifth groove  435   c  is arranged in order to clarify the outer boundary in the y direction of the region in which the bonding portions  52   a  can be bonded in the lead  43 . Similarly, the fifth groove  445   c  is arranged on the pad portion  442 , and corresponds to one continuous groove obtained by moving the three fifth grooves  445   c  shown in  FIG. 20  in the downward direction in the drawing. The groove has a form that is interposed between the first groove  445   a  and the second groove  445   b  and extends lengthwise in the x direction. The fifth groove  445   c  is covered by the resin member  6  and is parallel to the resin side surface  632 . The fifth grooves  445   c  are arranged in order to clarify the outer boundary in the y direction of the region in which the bonding portion  53   a  and the bonding portion  54   a  can be bonded on the lead  44 . 
     As shown in  FIG. 34 , in the step of bonding the electronic device B 2  as well, the pad portions  412  and  432  and the like are pressed down by the clamp members  90  and  95 , and a groove for indicating the region to be pressed down is formed on the pad portions  412  and  432  and the like. Fifth grooves  415   c  and  435   c  and the like for clarifying the outer boundaries in the y direction of the regions to which the bonding portions  51   a  and  52   a  and the like can be bonded are also formed. Accordingly, it is possible to exhibit an effect similar to that of the first embodiment of the second aspect. 
     Based on  FIG. 35 , an electronic device B 3  according to a third embodiment of a second aspect will be described. 
     The electronic device B 3  differs from the electronic device B 1  in that a first auxiliary groove  415   d  is formed on the pad portion  412  of the lead  41  and a second auxiliary groove  435   d  is formed on the pad portion  432  of the lead  43 . 
     The first auxiliary groove  415   d  is a groove that is similar to the first groove  415   a , is arranged between the first groove  415   a  and the first edge  412   b , and is parallel to the first groove  415   a . The first auxiliary groove  415   d  is arranged toward the first edge  412   b  with respect to the first pressing mark  419   a  in the x direction. That is, the first pressing mark  419   a  is formed between the first groove  415   a  and the first auxiliary groove  415   d  in the x direction. In the step of bonding the wires  51 , the first auxiliary groove  415   d  is arranged in order to clarify the region to be pressed by the tip portions of the clamp members  90 . In the step of bonding the wires  51  of the electronic device B 3 , the clamp members  90  press down the region between the first groove  415   a  and the first auxiliary groove  415   d.    
     The second auxiliary groove  435   d  is a groove that is similar to the second groove  435   b , is arranged between the second groove  435   b  and the second edge  432   c , and is parallel to the second groove  435   b . The second auxiliary groove  435   d  is arranged toward the second edge  432   c  with respect to the second pressing mark  439   b  in the x direction. That is, the second pressing mark  439   b  is formed between the second groove  435   b  and the second auxiliary groove  435   d  in the x direction. In the step of bonding the wires  52 , the second auxiliary groove  435   d  is arranged in order to clarify the region to be pressed by the tip portions of the clamp members  90 . In the step of bonding the wires  52  of the electronic device B 3 , the clamp members  90  press down the region between the second groove  435   b  and the second auxiliary groove  435   d.    
     In the configuration of the electronic device B 3  as well, in the bonding step, the pad portions  412  and  432  and the like are pressed down by the clamp members  90  and  95 , and grooves for clarifying the regions to be pressed down are formed on the pad portions  412  and  432  and the like. Fifth grooves  415   c  and  435   c  and the like for clarifying the outer boundaries in the y direction of the regions to which the bonding portions  51   a  and  52   a  and the like can be bonded are also formed. Accordingly, it is possible to exhibit an effect similar to that of the first embodiment of the second aspect. Furthermore, according to the configuration of the electronic device B 3 , in the bonding step, it is possible to more precisely indicate the regions to be pressed down by the clamp members  90  on the pad portions  412  and  432 . 
     In the example shown in  FIG. 35 , no auxiliary groove for the second groove  415   b  is provided on the pad main surface  412   a  and no auxiliary groove for the first groove  435   a  is provided on the pad main surface  432   a . Alternatively, auxiliary grooves such as those described above may also be formed on the pad main surfaces  412   a  and  432   a . Also, one or more grooves may also be formed on the pad portion  442  of the lead  44 . 
     Based on  FIG. 36 , an electronic device B 4  according to a fourth embodiment of a second aspect will be described. The electronic device B 4  shown in  FIG. 36  differs from the electronic device B 1  in that rectangular frame-shaped grooves are formed in the pad portions  412  and  432 . 
     Specifically, the rectangular frame-shaped groove formed in the pad portion  412  is composed of a linear first groove  415   a  and another first auxiliary groove  415   e . The first groove  415   a  of the electronic device B 4  has a smaller dimension in the y direction compared to the first groove  415   a  of the electronic device B 1 . Similarly to the first groove  415   a , the first auxiliary groove  415   e  is a continuous groove that is recessed in the z direction from the pad main surface  412   a  and is approximately C-shaped in a plan view. In  FIG. 36 , the upper end of the first auxiliary groove  415   e  is connected to the upper end of the first groove  415   a  and the lower end of the first auxiliary groove  415   e  is connected to the lower end of the first groove  415   a . The first pressing mark  419   a  is formed in a rectangular region surrounded by the first groove  415   a  and the first auxiliary groove  415   e . The first groove  415   a  and the first auxiliary groove  415   e  indicate the region to be pressed down by the tip portions of the clamp members  90  in the step of bonding the wires  51 . 
     As shown in  FIG. 36 , a rectangular frame-shaped groove is formed in the pad portion  432  as well. This groove is composed of a linear second groove  435   b  and a second auxiliary groove  435   e  that is connected to the second groove  435   b . Similarly to the second groove  435   b , the second auxiliary groove  435   e  is a continuous groove that is recessed in the z direction from the pad main surface  432   a , has an upper end connected to the upper end of the second groove  435   b , and has a lower end connected to the lower end of the second groove  435   b . The second pressing mark  439   b  is formed in a rectangular region surrounded by the second groove  435   b  and the second auxiliary groove  435   e . The second groove  435   b  and the second auxiliary groove  435   e  clarify the region to be pressed down by the tip portions of the clamp members  90  in the step of bonding the wires  52 . 
     In the configuration of the electronic device B 4  as well, in the bonding step, the pad portions  412  and  432  and the like are pressed down by the clamp members  90  and  95 , and grooves for clarifying the regions to be pressed down are formed on the pad portions  412  and  432  and the like. Fifth grooves  415   c  and  435   c  and the like for clarifying the outer boundaries in the y direction of the regions to which the bonding portions  51   a  and  52   a  and the like can be bonded are also formed. Accordingly, an effect similar to that of the first embodiment of the second aspect is exhibited. 
     In the example shown in  FIG. 36 , an auxiliary groove for the second groove  415   b  and an auxiliary groove for the first groove  435   a  may also be formed. Also, one or more grooves may also be formed in the pad portion  442  of the lead  44  as well. 
     In the example shown in  FIG. 36 , the groove surrounding the first pressing mark  419   a  (or the second pressing mark  439   b ) is rectangular in a plan view, but the present disclosure is not limited to this, and the groove may also have another polygonal shape or a circular shape. 
     Based on  FIGS. 37 and 38 , an electronic device B 5  according to the fifth embodiment of the second aspect will be described.  FIG. 37  is a plan view showing a portion of the constituent elements of the electronic device B 4 , viewed through the resin member  6 .  FIG. 38  is a plan view showing one step according to a method for manufacturing the electronic device B 5 . 
     In the electronic device B 5 , the shape of a groove formed in the pad portion  412  differs from that of the electronic device B 1  according to the first embodiment of the second aspect. 
     As shown in  FIG. 37 , a groove with a bent shape overall is formed in the pad portion  412  of the electronic device B 5 . This groove is composed of a linear first groove  415   a  and a linear first auxiliary groove  415   f . The first groove  415   a  is not parallel and is inclined with respect to the first edge  412   b . The first groove  415   a  is parallel to the wire  51  that is adjacent to the groove. The first auxiliary groove  415   f  has one end connected to one end of the first groove  415   a . The first auxiliary groove  415   f  is a groove that is recessed in the z direction from the pad main surface  412   a , similarly to the first groove  415   a . The first auxiliary groove  415   f  extends so as to intersect the first groove  415   a . The first pressing mark  419   a  is formed between the above-described groove with the bent shape (the first groove  415   a  and the first auxiliary groove  415   e ) and the first edge  412   b . As shown in  FIG. 38 , a groove with a similar bent shape is formed in the pad portion  442  as well. 
     The above-described first groove  415   a  and the above-described first auxiliary groove  415   e  indicate the orientations and positions of the tip portions of the clamp members  90  that are to be arranged in the bonding step of the wire  51 . Specifically, as shown in  FIG. 38 , in the step of bonding the wires  51 , the clamp member  90  is arranged such that the tip portion extends along the first groove  415   a  and the apex is located in the first auxiliary groove  415   f  (or nearby). 
     As shown in  FIG. 37 , the wires  51  are bonded to the pad main surface  412   a  in a state of being inclined with respect to the y direction. This indicates that when the wires  51  are bonded to the pad portion  412 , the wedge tool will move in downward and to the left. In this case, if the clamp member  90  is arranged parallel to the y direction, there is a risk that the wedge tool and the clamp member  90  will come into contact with each other. In order to prevent this kind of contact, the electronic device B 5  is configured such that the directions of the tip portions and the positions of the apexes of the clamp members  90  that are to be arranged during the bonding step are designed using the first groove  415   a  and the first auxiliary groove  415   e.    
     In the electronic device B 5 , the first groove  445   a  of the pad portion  442  is inclined with respect to the first edge  442   b , but is parallel to the wire  53  (see  FIG. 33 ). Also, the pad portion  442  includes a first auxiliary groove  445   f  that is connected to the first groove  445   a . The first auxiliary groove  445   f  is a groove that is recessed in the z direction from the pad main surface  442   a , similarly to the first groove  445   a . The first auxiliary groove  445   f  extends in a direction intersecting the first groove  445   a . The first pressing mark  449   a  (see  FIG. 33 ) is formed between the groove with the bent shape that is composed of the first groove  445   a  and the first auxiliary groove  445   f , and the first edge  442   b . The first groove  445   a  and the first auxiliary groove  445   f  indicate the orientation and position of the tip portion of the clamp member  90  that is to be arranged in the step of bonding the wire  53 . In the step of bonding the wire  53 , the clamp member  90  is arranged such that the tip portion of the clamp member  90  extends along the first groove  445   a  and the apex is located in the first auxiliary groove  445   f  (or nearby). 
     It is also possible to use a configuration in which the orientation of the tip of the clamp member  90  is indicated also by a groove other than the first groove  415   a  of the pad portion  412  and the first groove  445   a  of the pad portion  442 . 
     In the above-described first to fifth embodiments of the second aspect, a case was indicated in which the first semiconductor element  2 B is arranged between the first semiconductor element  2 A and the second semiconductor element  3 , but the present disclosure is not limited thereto. For example, the first semiconductor element  2 A may also be arranged between the first semiconductor element  2 B and the second semiconductor element  3 . In this case, the lead  41  is electrically connected to the semiconductor region  222 B (source region) of the first semiconductor element  2 B. Accordingly, the lead  41  corresponds to the terminal PGND of the circuit diagram shown in  FIG. 27 . Also, the lead  43  is electrically connected to the semiconductor region  221 A (drain region) of the first semiconductor element  2 A. Accordingly, the lead  43  corresponds to the terminal PVIN of the circuit diagram shown in  FIG. 27 . 
     In the above-described first to fifth embodiments of the second aspect, the lead  42  includes the pad portion  422 , but the present disclosure is not limited to this. For example, the lead  42  may also be constituted by only the terminal portion  421 . In this case, it is possible to reduce the size of or eliminate the notches in the pad portion  412  and the pad portion  432 . Also, in the above-described first to fifth embodiments, a case was indicated in which the lead  42  is not electrically connected to the electronic component  1 , but the lead  42  may also be electrically connected to the electronic component  1 . However, the pad portion  422  of the lead  42  is smaller and has a smaller region for bonding the bonding wires compared to, for example, the pad portion  452 . For this reason, it is preferable to use, for example, a thin wire similar to the wire to electrically connect the pad portion  422  and the electronic component  1 . 
     In the above-described first to fifth embodiments of the second aspect, a case was indicated in which the electronic component  1  includes the first semiconductor elements  2 A and  2 B (e.g., MOSFETs) and the second semiconductor element  3  (e.g., a control IC), but the present disclosure is not limited thereto. For example, the electronic component  1  may also not include any one of the first semiconductor elements  2 A and  2 B, and may include one of the first semiconductor elements  2 A and  2 B and the second semiconductor element  3  for controlling the one of the first semiconductor elements  2 A and  2 B. Alternatively, the electronic component  1  may also not include the second semiconductor element  3  and may include the two first semiconductor elements  2 A and  2 B. Alternatively, the electronic component  1  may also not include any one of the first semiconductor elements  2 A and  2 B and the second semiconductor element  3 , and may include only one of the first semiconductor elements  2 A and  2 B. 
     In the above-described first to fifth embodiments of the second aspect, a case was indicated in which the electronic devices B 1  to B 5  are SOP package structures, but the present disclosure is not limited thereto. For example, the package structure may be that of a TO (Transistor Outline) package, a QFP (Quad Flat Package), an SON (Small Outline Non-leaded Package), a DFN (Dual Flatpack Non-leaded Package), a QFN (Quad Flat Non-leaded Package), or the like. 
     The electronic device, the lead frame, and the method for manufacturing the electronic device based on the second aspect are not limited to the above-described embodiments. Specific configurations of the portions of the electronic device and the lead frame of the present disclosure and specific processes of the steps of the method for manufacturing the electronic device of the present disclosure can be designed and modified in various ways. 
     The electronic device, the lead frame, and the method for manufacturing the electronic device according to the second aspect of the present disclosure may be defined as in the following clauses. 
     Clause 1B. An electronic device comprising: 
     an electronic component provided with at least one electrode pad; 
     a die pad having an obverse surface facing in a first direction, the electronic component being mounted on the obverse surface of the die pad; 
     a lead spaced apart from the die pad; and 
     a connection member electrically connecting the electrode pad and the lead to each other, 
     wherein the connection member comprises a bonding portion bonded to the lead, and 
     the lead comprises: a pad obverse surface to which the bonding portion is bonded; a first groove recessed from the pad obverse surface in the first direction; and a first pressing mark recessed from the pad obverse surface in the first direction and disposed opposite to the bonding portion with respect to the first groove. 
     Clause 2B. The electronic device according to clause 1B, wherein the pad obverse surface comprises a first edge opposite to the bonding portion with respect to the first groove. 
     Clause 3B. The electronic device according to clause 2B, wherein the first groove extends in parallel to the first edge. 
     Clause 4B. The electronic device according to clause 2B or 3B, wherein a distance between the first groove and the first edge is 0.2 mm or greater and 1.0 mm or less. 
     Clause 5B. The electronic device according to any one of clauses 2B to 4B, wherein the first groove extends in parallel to the connection member. 
     Clause 6B. The electronic device according to any one of clauses 2B to 5B, wherein the lead is formed with a first auxiliary groove recessed from the pad obverse surface in the first direction and disposed between the first edge and the first groove. 
     Clause 7B. The electronic device according to clause 6B, wherein the first groove extends in parallel to the first auxiliary groove. 
     Clause 8B. The electronic device according to clause 6B, wherein the first groove and the first auxiliary groove intersect each other. 
     Clause 9B. The electronic device according to any one of clauses 1B to 5B, wherein the lead is formed with a first auxiliary groove recessed from the pad obverse surface in the first direction, and the first auxiliary groove and the first groove define a region in which the first pressing mark is formed. 
     Clause 10B. The electronic device according to any one of clauses 1B to 9B, wherein the lead is formed with a second groove and a second pressing mark, 
     the second grove is recessed from the pad obverse surface in the first direction and disposed opposite to the first groove with respect to the bonding portion, and 
     the second pressing mark is recessed from the pad obverse surface in the first direction and disposed opposite to the bonding portion with respect to the second groove. 
     Clause 11B. The electronic device according to clause 10B, wherein the bonding portion is disposed on a line segment connecting the first pressing mark and the second pressing mark. 
     Clause 12B. The electronic device according to any one of clauses 1B to 11B, wherein the die pad comprises: a die pad obverse surface on which the electronic component is mounted; a third groove recessed from the die pad obverse surface in the first direction; and a third pressing mark recessed from the die pad obverse surface in the first direction and disposed opposite to the electronic component with respect to the third groove. 
     Clause 13B. The electronic device according to clause 12B, wherein the die pad comprises: a fourth groove recessed from the die pad obverse surface in the first direction and disposed opposite to the third groove with respect to the electronic component; and a fourth pressing mark recessed from the die pad obverse surface in the first direction and disposed opposite to the electronic component with respect to the fourth groove. 
     Clause 14B. The electronic device according to any one of clauses 1B to 13B, further comprising a resin member covering the electronic component, wherein the lead comprises: a pad portion having a pad obverse surface; and a terminal portion connected to the pad portion and exposed from the resin member. 
     Clause 15B. The electronic device according to clause 14B, wherein the terminal portion comprises: a terminal obverse surface facing in a same sense of the first direction as the pad obverse surface; and a fifth groove recessed from the terminal obverse surface in the first direction, the fifth groove being covered by the resin member. 
     Clause 16B. The electronic device according to clause 14B, wherein the pad portion is formed with a fifth groove recessed from the pad obverse surface in the first direction, the fifth groove being covered by the resin member. 
     Clause 17B. The electronic device according to any one of clauses 1B to 16B, wherein the electronic component comprises: a conductive layer elongated as viewed in the first direction; and an insulating protective film covering the conductive layer, 
     the at least one electrode pad is formed by a portion of the conducive layer that is exposed via an opening formed in the protective film. 
     Clause 18B. The electronic device according to clause 17B, further comprising an additional connection member, wherein the protective film is formed with a plurality of openings via which a corresponding number of portions of the conducive layer are exposed, respectively, and 
     at least two portions of the corresponding number of portions of the conducive layer are electrically connected to each other by the additional connection member. 
     Clause 19B. The electronic device according to clause 18B, wherein the protective film comprises three portions that are exposed from the protective film and electrically connected to each other by the additional connection member. 
     Clause 20B. The electronic device according to clause 19B, wherein the additional connection member is a single wire. 
     Clause 21B. A lead frame comprising: 
     a die pad including an obverse surface facing in a first direction, the obverse surface being configured to support an electronic component; and 
     a lead to be connected to the electronic component via a connection member, 
     wherein the lead comprises: a pad obverse surface to which the connection member is bonded; a first groove recessed from the pad obverse surface in the first direction; and a pressing mark recessed from the pad obverse surface in the first direction and disposed opposite to a bonding region for the connection member with respect to the first groove. 
     Clause 22B. A method for manufacturing an electronic device, the method comprising: 
     preparing a lead frame that includes a die pad and a lead, the die pad having an obverse surface facing in a first direction; 
     mounting an electronic component on the obverse surface of the die pad, the electronic component being provided with an electrode pad; and 
     bonding a connection member to the electrode pad and the lead, 
     wherein said bonding a connection member comprises pressing down, with a clamp member, a region of the lead that is opposite to a bonding region of the connection member with respect to the first groove in bonding the connection member to the lead. 
     Clause 23B. The method according to clause 22B, wherein the lead is formed with a second groove that is recessed from the pad obverse surface in the first direction and disposed opposite to the first groove with respect to the bonding region, and 
     said bonding a connection member comprises pressing down, with a clamp member, a region of the lead that is opposite to the bonding region with respect to the second groove.