Abstract:
A solder-bearing terminal or lead for attachment to a receptacle in a substrate or to the surface of a substrate, wherein a discrete mass of solder is mechanically held by the terminal or lead in close proximity to the substrate receptacle or surface in position to be melted for connecting the terminal to the substrate with an electrical and mechanical bond, the terminal or lead providing an unobstructed flow for the melted solder to the substrate.
Abstract:
A conductive lead for connection to a first conductive area of a device having two opposed surfaces with a conductive area comprises an elongated conductive body formed from a substantially flat strip of a resilient material. The conductive body has a pair of opposite arms adapted to engage the opposed device surfaces resiliently. A non-conductive element is held by one arm and is adapted to engage the other surface of the device to insulate the lead from the other surface. The conductive area of the other surface is insulated by the lead and the non-conductive element from the conductive area of the first surface.
Abstract:
An electrical interconnect pin, particularly suitable for attachment to the edge of a flexible printed circuit board or "flex circuit", has an edge clip with an opening that can be temporarily enlarged to facilitate the attachment of the pin to the edge of a circuit board. The pin includes an elongated shank with a rectangular cross section and two substantially identical clips attached to opposite sides of the shank. To attach the pin to a printed circuit board, the pin is placed on a flat surface with the shank parallel to the surface. A force is then applied to the shank just below the clips and perpendicular to the surface. This force opens up the edge clip and the edge of the printed circuit board is then inserted into the opening of the edge clip. After the force is removed, the edge clip clamps down on the circuit board, temporarily attaching the pin to the board. The pins can then be permanently affixed to the board by soldering.
Abstract:
An edge clip for attachment to a contact pad on a substrate includes a pair of spaced-apart spring fingers, adapted to receive the edge of the substrate therebetween. One or both of the fingers may at least partially encircle and support a mass of solder. The fingers are joined to the body portion with a folded connecting portion integral with the body between its ends, and one or more folded end portions, aligned with the connecting portion, can be supported from carrier rails at one or both ends during manufacture.
Abstract:
A flat multiconductor jumper cable comprises a plurality of elongate substantially parallel and transversely spaced conductors surrounded by a casing of insulation. At one or both ends of the jumper cable, exposed portions of the conductors are formed in a curved clipped portion for solder connection to an integrated circuit substrate. The conductors are preferably formed of a soft non-resilient material such as copper and the clip portion is provided to have a substantially circular cross-section. The clip portion, formed in a generally U-shaped configuration defines a pocket for receipt therein of the edge of a substrate having conductive pads on opposing surfaces. Upon soldering the clip portion to the conductive pads, solder fillets are formed in such a manner as to provide an enhanced electrical and mechanical joint.
Abstract:
An electrical junction system for automotive internal wiring has a wiring board provided with branching conductors formed by a multiplicity of bus bars on an insulation plate, the branching conductors being adapted to be connected to electric wires in a wiring harness to form branching electric circuits. The electrical junction system has a printed circuit board detachably mounted on the wiring board, the printed circuit board generally or inclusively carrying a plurality of circuits incorporating a multiplicity of function parts which are used semi-permanently such as relays and associated control elements.
Abstract:
A method of soldering connection pins on carrier strips to printed circuit boards, notably to thick-film modules. Prior to soldering in a soldering bath, a printed circuit board is detachably connected to the connection pins. An endless carrier strip with the connection pins and printed circuit boards in the upright position is horizontally fed through liquid solder which flows off the components to be soldered at the surface. Solder which does not wet or connect the components flows away at the end of the predetermined soldering path, preferably in the transport direction of the parts, to a level below that of the carrier strip.
Abstract:
A mini-terminal clip for attachment to a circuit bearing chip wherein the clip is made from strip stock of normal gage by folding the body along a line or lines parallel to the body's length, the free end of the body beyond the fold or folds being slit to form two or three fingers of the same or different lengths, and the fingers then being bent as required to provide a gap adapted to receive the edge of the circuit bearing chip. The gap may face laterally, at a 90.degree. angle to the plane of the terminal body, or may be parallel to said plane, and one or more of the fingers may be provided with solder masses.
Abstract:
An improved edge clip terminal having a first diamond-shaped transition region connecting a plurality of tines, that clip over the edge of a substrate, to a first lead section and having a second diamond-shaped transition region connecting the first lead section to a second lead section. In an assembly, the second lead sections of a plurality of terminals are located in holes in a PC board with the second transition regions resting on the surface of the circuit board. The first lead sections are more narrow than the transition regions and of lengths that are sufficient for preventing solder wicking up them and into the areas of the tines during wave soldering of a circuit board so that a leaded substrate soldered into the circuit board may be tilted without damaging it. In an alternate embodiment of this invention, the lead portion of an edge clip terminal on a substrate has a pair of spaced apart transition regions in it. A first transition region and first length of lead space tines away from a second transition region in a hole in a circuit board for preventing solder wicking up the lead and tines during wave soldering so that the leaded substrate may be tilted without damaging it.
Abstract:
A terminal clip for attachment to a contact pad on a substrate having one or two individual masses of solder mechanically engaged with the clip in a position to be melted for bonding the clip to one or two surfaces of the contact pad.