Patent ID: 6292088
Filing Date: 2001-09-18
Classification: H01C

Abstract:
An electrical device which comprises(1) a laminar PTC resistive element which has a first face and second face;(2) a first laminar electrode which has (i) an inner face which contacts the first face of the PTC resistive element and (ii) an outer face;(3) a second laminar electrode which has (i) an inner face which contacts the second face of the PTC resistive element and (ii) an outer face;(4) an additional laminar conductive member which(a) has (i) an inner face which contacts the second face of the PTC resistive element and (ii) an outer face, and(b) is spaced apart from the second electrode;the PTC resistive element, the first laminar electrode and the additional conductive member defining an aperture which runs between the first laminar electrode and the additional conductive member, through the PTC resistive element;(5) a transverse conductive member which(a) is composed of metal,(b) lies within the aperture, and(c) is physically and electrically connected to the first laminar electrode and the additional laminar conductive member;(6) a first layer of solder which is secured to the outer face of the additional laminar conductive member;(7) a second layer of solder which is secured to the outer face of the second laminar electrode;(8) a third layer of solder which is secured to the outer face of the first laminar electrode around the transverse conductive member; and(9) a laminar masking member which(a) is composed of a solid material,(b) is secured to the outer face of the first laminar electrode adjacent to the third layer of solder,(c) remains solid at temperatures at which the first, second and third layers of solder are molten, and(d) carries identification marks.