SEMICONDUCTOR DEVICE

A semiconductor device includes: a semiconductor element; a first lead including a die pad portion and a first terminal portion; and a sealing resin. A first lead reverse surface is exposed from a second resin surface and spaced apart from a third resin surface in a first direction. The first terminal portion includes a first portion and a second portion. Only one set of the first portion passes through the third resin surface. The first portion is spaced apart from the second resin surface in a z direction. The second portion is located on a first side in the z direction relative to the first portion and used for mounting.

TECHNICAL FIELD

The present disclosure relates to a semiconductor device.

BACKGROUND ART

JP-A-2017-174951 discloses an example of a semiconductor device that includes a first lead including a first pad having a pad obverse surface and a pad reverse surface, a second lead, a third lead, a semiconductor element mounted on the pad obverse surface, and a sealing resin in contact with the pad obverse surface and covering the semiconductor element. The first lead, the second lead, and the third lead have a first terminal, a second terminal, and a third terminal, respectively, that extend in the same direction. The first terminal, the second terminal, and the third terminal are inserted into through-holes of a circuit board or the like, whereby the semiconductor device is mounted on the circuit board. In the case where the semiconductor device is attached to a heat sink, an insulating sheet may be provided between the pad reverse surface and the heat sink.

DETAILED DESCRIPTION OF EMBODIMENTS

The following describes preferred embodiments of the present disclosure in detail with reference to the drawings.

The terms such as “first”, “second” and “third” in the present disclosure are used merely for identification, and are not intended to impose orders on the items to which these terms refer.

In the present disclosure, the phrases “an object A is formed in an object B” and “an object A is formed on an object B” include, unless otherwise specified, “an object A is formed directly in/on an object B” and “an object A is formed in/on an object B with another object interposed between the object A and the object B”. Similarly, the phrases “an object A is disposed in an object B” and “an object A is disposed on an object B” include, unless otherwise specified, “an object A is disposed directly in/on an object B” and “an object A is disposed in/on an object B with another object interposed between the object A and the object B”. Similarly, the phrase “an object A is located on an object B” includes, unless otherwise specified, “an object A is located on an object B in contact with the object B” and “an object A is located on an object B with another object interposed between the object A and the object B”. Furthermore, the phrase “an object A overlaps with an object B as viewed in a certain direction” includes, unless otherwise specified, “an object A overlaps with the entirety of an object B” and “an object A overlaps with a portion of an object B”. Furthermore, the phrase “a plane A faces (a first side or a second side) in a direction B” is not limited to the case where the angle of the plane A with respect to the direction B is 90°, but also includes the case where the plane A is inclined to the direction B.

First Embodiment

FIGS.1to16show a semiconductor device according to a first embodiment of the present disclosure. A semiconductor device A10according to the present embodiment includes a conductive member10, a semiconductor element20, connecting members31,32, and33, and a sealing resin40. In these figures, a z direction is an example of a “thickness direction”, an x direction is an example of a “first direction”, and a y direction is an example of a “second direction”.

The conductive member10constitutes a conduction path to the semiconductor element20. The conductive member10of the present embodiment includes a first lead11, a second lead12, a third lead13, and a fourth lead14. The material of the first lead11, the second lead12, the third lead13, and the fourth lead14is not particularly limited, and may contain copper (Cu) or a copper alloy. Appropriate portions of the first lead11, the second lead12, the third lead13, and the fourth lead14may be plated with a metal such as silver (Ag), nickel (Ni), or tin (Sn).

First Lead11:

As shown inFIGS.1to15, the first lead11has a die pad portion111and a first terminal portion112. The die pad portion111has a first lead obverse surface1111and a first lead reverse surface1112. The first lead obverse surface1111faces a first side in the z direction. The first lead reverse surface1112faces a second side in the z direction. The semiconductor element20is mounted on the first lead obverse surface1111.

The die pad portion111of the present embodiment further has a first lead side surface1113and a first intermediate surface1114. The first lead side surface1113is located between the first lead obverse surface1111and the first lead reverse surface1112in the z direction, and faces a first side in the x direction. The first intermediate surface1114is located between the first lead obverse surface1111and the first lead reverse surface1112in the z direction, and faces the second side in the z direction (the same side as the side that the first lead reverse surface1112faces).

The shape of the die pad portion111is not particularly limited. In the illustrated example, the die pad portion111has a rectangular shape as viewed in the z direction. The shape of each of the first lead obverse surface1111and the first lead reverse surface1112is not particularly limited, and in the illustrated example, is rectangular as viewed in the z direction.

The first terminal portion112has a first portion1121, two second portions1122, and two third portions1123. The first portion1121is connected to the die pad portion111, extends from the die pad portion111toward the first side in the x direction, and in the illustrated example, is parallel to an xy plane. In the present embodiment, the die pad portion111is larger than the first portion1121in the z direction. The first terminal portion112of the present embodiment has only one first portion1121. The shape of the first portion1121is not particularly limited, and in the illustrated example, is rectangular as viewed in the z direction. The first portion1121is spaced apart from the first lead reverse surface1112in the z direction, and in the illustrated example, is in contact with the first lead obverse surface1111. One surface of the first portion1121is flush with the first lead obverse surface1111.

The two second portions1122are located on the first side in the z direction relative to the first portion1121. The two second portions1122are used when the semiconductor device A10is surface-mounted on a circuit board or the like.

The two third portions1123are located between the first portion1121and the two second portions1122. The third portions1123extend from the first portion1121toward the first side in the z direction. In the illustrated example, the third portions1123are inclined to the z direction so as to extend outward in the y direction from the first portion1121. The shape of each of the third portions1123is not particularly limited, and in the illustrated example, is rectangular as viewed in the z direction.

In the present embodiment, the two second portions1122extend outward in the y direction from the two third portions1123. Furthermore, the two second portions1122are parallel to the y direction. The two second portions1122do not extend from the two third portions1123to the first side in the x direction. In the illustrated example, the two second portions1122and the two third portions1123are located at the same (or substantially the same) position in the x direction.

The second lead12is spaced apart from the first lead11(the die pad portion111) to a second side in the x direction. The second lead12has a pad portion121and a plurality of second terminal portions122.

The pad portion121has a second lead obverse surface1211and a second lead reverse surface1212. The second lead obverse surface1211faces the first side in the z direction. The second lead reverse surface1212faces the second side in the z direction. The second lead obverse surface1211is connected to a connecting member31. The shape of the pad portion121is not particularly limited. In the illustrated example, the pad portion121has a rectangular shape elongated in the y direction. As viewed in the z direction, the pad portion121is smaller than the die pad portion111. Furthermore, the pad portion121is smaller than the die pad portion111in the z direction, and has the same size as the first portion1121in the z direction. In the illustrated example, the second lead obverse surface1211is located at the same (or substantially the same) position as the first lead obverse surface1111of the die pad portion111in the z direction.

The second terminal portions122are aligned in the y direction. Each of the second terminal portions122has a fourth portion1221, a fifth portion1222, and a sixth portion1223.

The fourth portion1221is connected to the pad portion121, extends from the pad portion121toward the second side in the x direction, and in the illustrated example, is parallel to the xy plane. The shape of the fourth portion1221is not particularly limited, and in the illustrated example, is rectangular as viewed in the z direction.

The fifth portion1222is located on the first side in the z direction relative to the fourth portion1221. The fifth portion1222is used when the semiconductor device A10is surface-mounted on a circuit board or the like. The fifth portion1222extends in the x direction.

The sixth portion1223is interposed between the fourth portion1221and the fifth portion1222. The sixth portion1223extends from the fourth portion1221toward the first side in the z direction. In the illustrated example, the sixth portion1223is inclined to the z direction (yz plane). The shape of the sixth portion1223is not particularly limited, and in the illustrated example, is rectangular as viewed in the x direction.

The third lead13is spaced apart from the first lead11(die pad portion111) toward the second side in the x direction. The third lead13is aligned with the second lead12in the y direction. The third lead13has a pad portion131and a third terminal portion132.

The pad portion131has a third lead obverse surface1311and a third lead reverse surface1312. The third lead obverse surface1311faces the first side in the z direction. The third lead reverse surface1312faces the second side in the z direction. The third lead obverse surface1311is connected to a connecting member32. The shape of the pad portion131is not particularly limited, and in the illustrated example, is rectangular as viewed in the z direction. As viewed in the z direction, the pad portion131is smaller than the pad portion121. Furthermore, the pad portion131is smaller than the die pad portion111in the z direction, and has the same size as the pad portion121in the z direction. In the illustrated example, the third lead obverse surface1311is located at the same (or substantially the same) position as the first lead obverse surface1111of the die pad portion111in the z direction.

The third terminal portion132has a seventh portion1321, an eighth portion1322, and a ninth portion1323.

The seventh portion1321is connected to the pad portion131, extends from the pad portion131toward the second side in the x direction, and in the illustrated example, is parallel to the xy plane. The shape of the seventh portion1321is not particularly limited, and in the illustrated example, is rectangular as viewed in the z direction.

The eighth portion1322is located on the first side in the z direction relative to the seventh portion1321. The eighth portion1322is used when the semiconductor device A10is surface-mounted on a circuit board or the like. The eighth portion1322extends in the x direction.

The ninth portion1323is interposed between the seventh portion1321and the eighth portion1322. The ninth portion1323extends from the seventh portion1321toward the first side in the z direction. In the illustrated example, the ninth portion1323is inclined to the z direction (yz plane). The shape of the ninth portion1323is not particularly limited, and in the illustrated example, is rectangular as viewed in the x direction.

The fourth lead14is spaced apart from the first lead11(die pad portion111) toward the second side in the x direction. The fourth lead14is located between the second lead12and the third lead13in the y direction. The fourth lead14has a pad portion141and a fourth terminal portion142.

The pad portion141has a fourth lead obverse surface1411and a fourth lead reverse surface1412. The fourth lead obverse surface1411faces the first side in the z direction. The fourth lead reverse surface1412faces the second side in the z direction. The fourth lead obverse surface1411is connected to a connecting member33. The shape of the pad portion141is not particularly limited, and in the illustrated example, is rectangular as viewed in the z direction. As viewed in the z direction, the pad portion141is smaller than the pad portion121and has substantially the same size as the pad portion131. Furthermore, the pad portion141is smaller than the die pad portion111in the z direction, and has the same size as each of the pad portion121and the pad portion131in the z direction. In the illustrated example, the fourth lead obverse surface1411is located at the same (or substantially the same) position as the first lead obverse surface1111of the die pad portion111in the z direction.

The fourth terminal portion142has a tenth portion1421, an eleventh portion1422, and a twelfth portion1423.

The tenth portion1421is connected to the pad portion141, extends from the pad portion141toward the second side in the x direction, and in the illustrated example, is parallel to the xy plane. The shape of the tenth portion1421is not particularly limited, and in the illustrated example, is rectangular as viewed in the z direction.

The eleventh portion1422is located on the first side in the z direction relative to the tenth portion1421. The eleventh portion1422is used when the semiconductor device A10is surface-mounted on a circuit board or the like. The eleventh portion1422extends in the x direction.

The twelfth portion1423is interposed between the tenth portion1421and the eleventh portion1422. The twelfth portion1423extends from the tenth portion1421toward the first side in the z direction. In the illustrated example, the twelfth portion1423is inclined to the z direction (yz plane). The shape of the twelfth portion1423is not particularly limited, and in the illustrated example, is rectangular as viewed in the x direction.

As shown inFIG.5andFIGS.11to15, the semiconductor element20is mounted on the first lead obverse surface1111of the die pad portion111. In the semiconductor device A10, the semiconductor element20is an n-channel metal-oxide-semiconductor field-effect transistor (MOSFET) having a vertical structure. The semiconductor element20is not limited to a MOSFET. The semiconductor element20may be another transistor such as an insulated gate bipolar transistor (IGBT). Furthermore, the semiconductor element20may be a diode. The semiconductor element20has a semiconductor layer205, a first electrode201, a second electrode202, and a third electrode203.

The semiconductor layer205includes a compound semiconductor substrate. The main material of the compound semiconductor substrate is silicon carbide (SiC). Alternatively, the main material of the compound semiconductor substrate may be silicon (Si).

The first electrode201is provided on a surface of the semiconductor layer205that faces the same side (first side) in the z direction as the side that the first lead obverse surface1111of the die pad portion111of the first lead11faces. The first electrode201corresponds to a source electrode of the semiconductor element20.

The second electrode202is provided on a surface of the semiconductor layer205opposite to the first electrode201in the z direction. The second electrode202faces the first lead obverse surface1111of the die pad portion111of the first lead11. The second electrode202corresponds to a drain electrode of the semiconductor element20. In the present embodiment, the second electrode202is bonded to the first lead obverse surface1111via a bonding layer29. The bonding layer29is solder, silver (Ag) paste, or calcined silver, for example.

The third electrode203is provided on the surface of the semiconductor layer205in the z direction where the first electrode201is provided, and is spaced apart from the first electrode201. The third electrode203corresponds to a gate electrode of the semiconductor element20. As viewed in the z direction, the area of the third electrode203is smaller than that of the first electrode201.

The connecting member31is bonded to the first electrode201of the semiconductor element20and the second lead obverse surface1211of the pad portion121of the second lead12. The material of the connecting member31is not particularly limited, and contains a metal such as aluminum (Al), copper (Cu), or gold (Au). The number of connecting members31is not particularly limited, and it is possible to provide a plurality of connecting members31. In the illustrated example, the connecting member31is a flat band-like member containing aluminum (Al).

The connecting member32is connected to the third electrode203of the semiconductor element20and the third lead obverse surface1311of the pad portion131of the third lead13. In the illustrated example, the connecting member32is a linear member narrower than the connecting member31and contains gold (Au).

The connecting member33is connected to the first electrode201of the semiconductor element20and the fourth lead obverse surface1411of the pad portion141of the fourth lead14. In the illustrated example, the connecting member33is a linear member narrower than the connecting member31and contains gold (Au).

In the present embodiment, the first terminal portion112of the first lead11is a drain terminal, the second terminal portions122of the second lead12are source terminals, the third terminal portion132of the third lead13is a gate terminal, and the fourth terminal portion142of the fourth lead14is a source sense terminal.

As shown inFIGS.1to15, the sealing resin40covers the semiconductor element20, the connecting members31,32, and33, and a part or the entirety of each of the first lead11, the second lead12, the third lead13, and the fourth lead14. The sealing resin40is electrically insulative. The sealing resin40is made of a material containing a black epoxy resin, for example. The sealing resin40has a first resin surface41, a second resin surface42, a third resin surface43, a fourth resin surface44, a fifth resin surface45, and a sixth resin surface46.

The first resin surface41faces the same side (the first side) in the z direction as the side that the first lead obverse surface1111of the die pad portion111of the first lead11faces. The second resin surface42faces the opposite side (the second side) from the first resin surface41in the z direction. The first lead reverse surface1112of the die pad portion111of the first lead11is exposed from the second resin surface42. The second resin surface42and the first lead reverse surface1112are flush with each other. The first lead reverse surface1112is spaced apart from the third resin surface43in the x direction.

The third resin surface43faces the first side in the x direction. The first portion1121of the first terminal portion112of the first lead11passes through the third resin surface43. In the present embodiment, only one first portion1121passes through the third resin surface43. The first portion1121is spaced apart from the second resin surface42in the z direction.

The fourth resin surface44faces the opposite side (the second side) from the third resin surface43in the x direction. In the present embodiment, the fourth portions1221of the second terminal portions122of the second lead12, the seventh portion1321of the third terminal portion132of the third lead13, and the tenth portion1421of the fourth terminal portion142of the fourth lead14pass through the fourth resin surface44.

The fifth resin surface45and the sixth resin surface46face away from each other in the y direction.

As shown inFIG.7, the ends of the two second portions1122of the first terminal portions112of the first lead11in the y direction are substantially at the same positions as the fifth resin surface45and the sixth resin surface46of the sealing resin40in the y direction. The two second portions1122do not extend beyond the fifth resin surface45and the sixth resin surface46in the y direction.

In the illustrated example, the sealing resin40has a groove49. The groove49is recessed from the second resin surface42in the z direction and extends in the y direction. The groove49reaches the fifth resin surface45and the sixth resin surface46. The groove49is located between the first lead reverse surface1112and the fourth resin surface44.

In the illustrated example, the sealing resin40has two recesses47. One of the recesses47is recessed from the first resin surface41and the fifth resin surface45. The other recess47is recessed from the first resin surface41and the sixth resin surface46. The first lead obverse surface1111is partially exposed from the recesses47.

FIG.16shows a use state of the semiconductor device A10. In this use example, the semiconductor device A10is surface-mounted on a circuit board92. In other words, the second portions1122of the first terminal portion112, the fifth portions1222of the second terminal portions122, the eighth portion1322of the third terminal portion132, and the eleventh portion1422of the fourth terminal portion142are electrically connected to a wiring pattern (not illustrated) of the circuit board92by, for example, solder921. A heat sink91is arranged to face the first lead reverse surface1112of the die pad portion111. In the illustrated example, a sheet member919is provided between the first lead reverse surface1112and the heat sink91. The sheet member919is an insulating sheet, for example.

Next, advantages of the semiconductor device A10will be described.

As shown inFIG.16, the first lead reverse surface1112is exposed from the second resin surface42. This makes it possible to arrange the heat sink91to face the first lead reverse surface1112, for example. The second portions1122are located on the first side in the z direction relative to the first portion1121. This makes it possible to surface-mount the semiconductor device A10on the circuit board92, for example, with use of the second portions1122. The first lead reverse surface1112is spaced apart from the third resin surface43in the x direction. The first portion1121is spaced apart from the second resin surface42in the z direction. Thus, a portion of the sealing resin40exists between the first lead reverse surface1112and the first portion1121. In this way, the first lead11can be more firmly held by the sealing resin40.

The first terminal portion112has the third portions1123. This makes it possible to more reliably support the second portions1122.

The third portions1123extend also in the z direction. This makes it possible to reduce the dimension of the semiconductor device A10in the x direction.

The first terminal portion112has the two second portions1122. This improves the mounting strength of the semiconductor device A10.

The two second portions1122extend outward in the y direction from the third portions1123. This further improves the mounting strength of the semiconductor device A10.

The size of the first portion1121in the y direction is smaller than that of the die pad portion111in the y direction. This allows the sealing resin40to hold the first lead11more firmly.

The second portions1122do not extend beyond the third portions1123in the x direction. This makes it possible to reduce the dimension of the semiconductor device A10in the x direction.

The die pad portion111is larger than the first portion1121in the z direction. This makes it possible to transfer heat to a wider area in both the x direction and the y direction in the process of transferring heat from the semiconductor element20to the first lead reverse surface1112. Thus, a wider area of the first portion1121can dissipate heat from the semiconductor element20to the heat sink91or the like, thereby enhancing heat dissipation efficiency.

One surface of the first portion1121is flush with the first lead obverse surface1111. This makes it possible to increase the distance from the first portion1121to the second resin surface42in the z direction, thereby allowing the sealing resin40to hold the first lead11more firmly.

The sealing resin40is formed with the groove49. This increases the distance along the surface of the sealing resin (hereinafter, “creepage distance”) from the first lead reverse surface1112to each of the second lead12(the fourth portions1221), the third lead13(the seventh portion1321), and the fourth lead14(the tenth portion1421).

FIGS.17to40show other embodiments of the present disclosure. In these figures, elements that are the same as or similar to those in the above embodiment are provided with the same reference numerals as in the above embodiment. The configurations of the elements in each variation and each embodiment can be combined as appropriate as long as the combination does not cause technical contradictions.

First Variation of the First Embodiment

FIGS.17and18show a first variation of the semiconductor device A10. A semiconductor device A11of the present variation is different from the above example in the relationship between the first resin surface41and each of the second portions1122, the fifth portion1222, the eighth portion1322, and the eleventh portion1422.

In the present variation, the second portions1122, the fifth portion1222, the eighth portion1322, and the eleventh portion1422are located on the second side in the z direction (the side that the first lead reverse surface1112faces) relative to the first resin surface41. The ends of the second portions1122, the fifth portion1222, the eighth portion1322, and the eleventh portion1422on the first side in the z direction are spaced apart from the first resin surface41by a distance Gz.

According to the present variation, the semiconductor device A11is surface-mountable and has the same advantages as the semiconductor device A10. The first resin surface41protrudes from the second portions1122, the fifth portion1222, the eighth portion1322, and the eleventh portion1422toward the first side in the z direction by the distance Gz.

Accordingly, in a use state of the semiconductor device A11shown inFIG.18, pressing the heat sink91against the semiconductor device A11can easily bring the first resin surface41in contact with the circuit board92. This makes it possible to prevent the force applied by the heat sink91from acting on the first lead11, the second lead12, the third lead13, the fourth lead14, and the semiconductor element20.

Second Variation of the First Embodiment

FIGS.19and20show a second variation of the semiconductor device A10. A semiconductor device A12of the present variation has two grooves49provided in the sealing resin40.

The grooves49extend in the y direction and reach the fifth resin surface45and the sixth resin surface46. The two grooves49are spaced apart from each other in the x direction.

The present variation also allows surface-mounting of the semiconductor device A12and achieves the same advantages as the above examples. The two grooves49can further increase the creepage distance between the first lead reverse surface1112and each of the second terminal portions122, the third terminal portion132, and the fourth terminal portion142. As can be understood from the present variation, the number of grooves49is not particularly limited.

Third Variation of the First Embodiment

FIGS.21and22show a third variation of the semiconductor device A10. A semiconductor device A13of the present variation has a protrusion48provided for the sealing resin40.

The protrusion48protrudes from the second resin surface42to the second side in the z direction. The protrusion48extends in the y direction and reaches the fifth resin surface45and the sixth resin surface46. In the illustrated example, the protrusion48is arranged at an end of the sealing resin40on the second side in the x direction, and is in contact with the fourth resin surface44.

The present variation also allows surface-mounting of the semiconductor device A13. The protrusion48can increase the creepage distance between the first lead reverse surface1112and each of the second terminal portions122, the third terminal portion132, and the fourth terminal portion142.

Fourth Variation of the First Embodiment

FIGS.23and24show a fourth variation of the semiconductor device A10. A semiconductor device A14of the present variation has two protrusions48provided for the sealing resin40.

The protrusions48protrude to the second side in the z direction. The protrusions48extend in the y direction and reach the fifth resin surface45and the sixth resin surface46. The two protrusions48are spaced apart from each other with the first lead reverse surface1112therebetween in the x direction. One of the protrusions48is in contact with the fourth resin surface44. The other protrusion48is in contact with the third resin surface43.

The present variation also allows surface-mounting of the semiconductor device A14. The two protrusions48can further increase the creepage distance between the first lead reverse surface1112and each of the second terminal portions122, the third terminal portion132, and the fourth terminal portion142. As can be understood from the present variation, the number of protrusions48is not particularly limited.

Fifth Variation of the First Embodiment

FIG.25shows a fifth variation of the semiconductor device A10. In the semiconductor device A15according to the present variation, the sealing resin40does not have any protrusions48or grooves49. The present variation also allows surface-mounting of the semiconductor device A15. As can be understood from the present variation, the sealing resin40may be configured without any protrusions48or grooves49.

Sixth Variation of the First Embodiment

FIG.26shows a sixth variation of the semiconductor device A10. In a semiconductor device A16according to the present variation, the two second portions1122extend inward in the x direction from the two respective third portions1123. The present variation also allows surface-mounting of the semiconductor device A16. As can be understood from the present variation, the second portions1122are not limited to a particular shape, for example.

Second Embodiment

FIG.27shows a semiconductor device according to a second embodiment of the present disclosure. A semiconductor device A20according to the present embodiment does not include any of the connecting members31,32, and33described above.

In the present embodiment, the second lead reverse surface1212of the pad portion121of the second lead12is electrically connected to the first electrode201of the semiconductor element20. The third lead reverse surface1312of the pad portion131of the third lead13is electrically connected to the third electrode203of the semiconductor element20. The fourth lead reverse surface1412of the pad portion141of the fourth lead14is electrically connected to the first electrode201of the semiconductor element20.

The present embodiment also allows surface-mounting of the semiconductor device A20. As can be understood from the present embodiment, the second lead12, the third lead13, and the fourth lead14may be electrically connected to the semiconductor element20in various manners.

Third Embodiment

FIG.28shows a semiconductor device according to a third embodiment of the present disclosure. A semiconductor device A30in the present embodiment is different from those in the above embodiments in the configuration of the first lead11.

The first lead11of the present embodiment is configured such that the die pad portion111and the first portion1121have the same (or substantially the same) size in the z direction. The first lead11has a connecting portion113. The connecting portion113connects the die pad portion111and the first portion1121of the first terminal portion112to each other. Even in the present embodiment, only one first portion1121passes through the third resin surface43. In the present embodiment, the position of the first lead obverse surface1111in the z direction is different from the position of the surface of the first portion1121facing the first side in the z direction and the positions of the second lead obverse surface1211, the third lead obverse surface1311, and the fourth lead obverse surface1411in the z direction.

The present embodiment also allows surface-mounting of the semiconductor device A30. As can be understood from the present embodiment, the relationship between the size of the die pad portion111in the z direction and the size of the first portion1121in the z direction is not particularly limited.

Fourth Embodiment

FIGS.29to32show a semiconductor device according to a fourth embodiment of the present disclosure. A semiconductor device A40in the present embodiment is different from those in the above embodiments in the configuration of the first terminal portion112.

According to the present embodiment, the first terminal portion112has a first portion1121, a second portion1122, and a third portion1123. The third portion1123extends from the first portion1121toward the first side in the z direction, and has a rectangular shape as viewed in the x direction. The size of the third portion1123in the y direction is the same (or substantially the same) as the size of the first portion1121in the y direction.

The second portion1122extends from the third portion1123toward the first side (the outside) in the x direction. As viewed in the z direction, the second portion1122has a rectangular shape elongated in the y direction. The both ends of the second portion1122in the y direction protrude from the third portion1123to the outside in the y direction. The positions of the respective ends of the second portion1122in the y direction are substantially the same as the positions of the fifth resin surface45and the sixth resin surface46of the sealing resin40, and do not extend outward from the fifth resin surface45and the sixth resin surface46in the y direction.

The present embodiment also allows surface-mounting of the semiconductor device A40. As can be understood from the present embodiment, the second portion1122and the third portion1123are not limited to a particular configuration.

First Variation of the Fourth Embodiment

FIGS.33to35show a first variation of the semiconductor device A40. In a semiconductor device A41of the present variation, the first portion1121of the first terminal portion112is formed with a plurality of through-holes1121a, and the third portion1123is formed with a plurality of through-holes1123a.

The through-holes1121apass through the first portion1121in the z direction. The shape of each through-hole1121ais not particularly limited. In the illustrated example, each through-hole1121ahas a long hole shape elongated in the z direction. The through-holes1121aare aligned in the y direction. Each of the through-holes1121ais partially positioned within the sealing resin40.

The through-holes1123apass through the third portion1123in the x direction. The shape of each through-hole1123ais not particularly limited. In the illustrated example, each through-hole1123ahas a long hole shape elongated in the z direction. The through-holes1123aare aligned in the y direction. A through-hole1121aand a through-hole1123athat are adjacent to each other are connected and in communication with each other.

The present variation also allows surface-mounting of the semiconductor device A41. Furthermore, providing the through-holes1121ain the first portion1121and the through-holes1123ain the third portion1123has an advantage of easily performing a bending process when forming the first terminal portion112. Since a portion of each through-hole1121ais positioned within the sealing resin40, the alignment strength between the first terminal portion112and the sealing resin40can be enhanced.

Second Variation of the Fourth Embodiment

FIG.36shows a second variation of the semiconductor device A40. In a semiconductor device A42of the present variation, the first portion1121of the first terminal portion112is formed with a plurality of through-holes1121a, the second portion1122is formed with a plurality of through-holes1122a, and the third portion1123is formed with a plurality of through-holes1123a. The through-holes1121aand the through-holes1123aare configured in the same manner as those of the semiconductor device A41.

The through-holes1123apass through the third portion1123in the z direction. The shape of each through-hole1123ais not particularly limited. In the illustrated example, each through-hole1123ahas a long hole shape elongated in the z direction. The through-holes1123aare aligned in the y direction. A through-hole1122aand a through-hole1123athat are adjacent to each other are connected and in communication with each other.

The present variation also allows surface-mounting of the semiconductor device A42. Furthermore, providing the through-holes1121ain the first portion1121, the through-holes1123ain the third portion1123, and the through-holes1122ain the second portion1122has an advantage of easily performing a bending process when forming the first terminal portion112.

Third Variation of the Fourth Embodiment

FIG.37shows a third variation of the semiconductor device A40. In a semiconductor device A43of the present variation, the third portion1123of the first terminal portion112is formed with a plurality of through-holes1123a. On the other hand, the first portion1121and the second portion1122are not formed with the above-described through-holes1121aand the through-holes1122a.

The present variation also allows surface-mounting of the semiconductor device A43. Furthermore, providing the through-holes1123ain the third portion1123has an advantage of easily performing a bending process when forming the first terminal portion112.

Fourth Variation of the Fourth Embodiment

FIG.38shows a fourth variation of the semiconductor device A40. In a semiconductor device A44of the present variation, the first portion1121of the first terminal portion112is formed with a plurality of through-holes1121a. On the other hand, the second portion1122and the third portion1123are not formed with the above-described through-holes1122aand the through-holes1123a. The through-holes1121aare spaced apart from the third portion1123in the x direction.

The present variation also allows surface-mounting of the semiconductor device A44. Since a portion of each through-hole1121ais positioned within the sealing resin40, the alignment strength between the first terminal portion112and the sealing resin40can be enhanced.

Fifth Variation of the Fourth Embodiment

FIG.39shows a fifth variation of the semiconductor device A40. In the semiconductor device A45according to the present variation, the first terminal portion112has two first portions1121, two third portions1123, and a second portion1122.

The two first portions1121protrude from the third resin surface43of the sealing resin40toward the first side in the x direction. The two first portions1121are spaced apart from each other in the y direction. The two third portions1123are connected to the respective ends of the two first portions1121on the first side in the x direction. Each of the third portions1123has a shape along the z direction. The ends of the two third portions1123on the first side in the z direction are connected to the second portion1122.

The present variation also allows surface-mounting of the semiconductor device A45. Since a portion of the sealing resin40is positioned between the two first portions1121, the alignment strength between the first terminal portion112and the sealing resin40can be enhanced.

Sixth Variation of the Fourth Embodiment

FIG.40shows a sixth variation of the semiconductor device A40. A semiconductor device A46in the present variation is different from those in the above embodiments in the configuration of the first terminal portion112. In the present variation, the third portion1123of the first terminal portion112is inclined to the z direction. The third portion1123is inclined to be further away from the first portion1121in the x direction as proceeding from the first portion1121to the second portion1122in the z direction.

The present variation also allows surface-mounting of the semiconductor device A46. As can be understood from the present variation, the specific configuration of the first terminal portion112can be changed in various manners.

The semiconductor device according to the present disclosure is not limited to the embodiments described above. Various design changes can be made to the specific configurations of the elements of the semiconductor device according to the present disclosure. The present disclosure includes the embodiments described in the following clauses.

A semiconductor device comprising:a semiconductor element;a first lead including a die pad portion and a first terminal portion, the die pad portion including a first lead obverse surface that faces a first side in a thickness direction and on which the semiconductor element is mounted and a first lead reverse surface that faces a second side in the thickness direction; anda sealing resin including a first resin surface facing the first side in the thickness direction, a second resin surface facing the second side in the thickness direction, and a third resin surface facing a first side in a first direction perpendicular to the thickness direction, the sealing resin covering the semiconductor element and a portion of the die pad portion,wherein the first lead reverse surface is exposed from the second resin surface and spaced apart from the third resin surface in the first direction,the first terminal portion includes a first portion and a second portion,only one set of the first portion passes through the third resin surface, and the first portion is spaced apart from the second resin surface in the thickness direction, andthe second portion is located on the first side in the thickness direction relative to the first portion and used for mounting.

The semiconductor device according to clause 1, wherein the first terminal portion includes a third portion interposed between the first portion and the second portion.

The semiconductor device according to clause 2, wherein the third portion extends from the first portion toward the first side in the thickness direction.

The semiconductor device according to clause 3, wherein the third portion is parallel to the thickness direction.

The semiconductor device according to clause 3 or 4, wherein the first terminal portion includes two second portions, one of which is said second portion.

The semiconductor device according to clause 5, wherein the two second portions extend outward from the third portion in a second direction perpendicular to the thickness direction and the first direction.

The semiconductor device according to clause 6, wherein a size of the first portion in the second direction is smaller than a size of the die pad portion in the second direction.

The semiconductor device according to clause 6 or 7, wherein the second portions do not extend beyond the third portion in the first direction.

The semiconductor device according to clause 3 or 4, wherein the second portion extends from the third portion toward the first side in the first direction.

The semiconductor device according to clause 9, wherein the second portion is along a plane perpendicular to the thickness direction.

The semiconductor device according to clause 10, wherein a size of the second portion in a second direction perpendicular to the thickness direction and the first direction is larger than a size of the third portion in the second direction.

The semiconductor device according to clause 11, wherein the second portion protrudes from the third portion to both sides in the second direction.

The semiconductor device according to any of clauses 1 to 12, wherein the die pad portion is larger than the first portion of the first terminal portion in the thickness direction.

The semiconductor device according to clause 13, wherein one side of the first portion is flush with the first lead obverse surface.

The semiconductor device according to any of clauses 1 to 14, further comprising:a connecting member connected to the semiconductor element; anda second lead located on the second side in the first direction relative to the first lead, and including a pad portion that includes a second lead obverse surface facing the first side in the thickness direction,wherein the connecting member is connected to the second lead obverse surface, andthe first lead obverse surface and the second lead obverse surface are located at a same position in the thickness direction.

The semiconductor device according to clause 15,wherein the sealing resin includes a fourth resin surface facing the second side in the first direction, andthe second lead includes a second terminal portion that includes a fourth portion passing through the fourth resin surface.

The semiconductor device according to clause 16, wherein the second terminal portion includes a fifth portion located on the first side in the thickness direction relative to the fourth portion and used for mounting, and a sixth portion interposed between the fourth portion and the fifth portion.