Socket for zig-zag inline package
AssigneeAMP Incorporated
InventorsTimothy B. Billman, Joseph R. Goodman, Gary R. Marpoe, Jr.
Life of this patent
Estimating the term…
Abstract
A connector for interconnecting a zig-zag inline package to a printed circuit board has a plurality of contacts in two parallel and offset rows. The contacts and housing are dimensionally controlled to be preloaded only when installed in the housing cavity, providing predictable preload and resultant insertion force. The connector also includes a decoupling capacitor, integral with the contacts which contact the power and ground lead of the integrated circuit packages.
Claims10
An electrical socket having an insulative housing and a plurality of terminals having a predetermined preload between first and second contact portions, the housing having a plurality of cavities disposed in two parallel rows, each of said cavities defined by a front surface and a rear surface and side surfaces therebetween, the terminals comprising a terminal portion which lies adjacent to the rear surface defining the first contact portion and extends downwardly to a floor, the terminal portion being reversely bent at the floor to project upwardly defining a leg adjacent to the front surface, thereafter being reversely bent downwardly and radiused to lie inside of, and adjacent to, the first contacting portion to define the second contact portion, the terminals being formed from a flat blank of conductive material having a known thickness, the terminals being formed such that the legs and the second contact portions are angled away from the first contacting portions with the distance between the first and second contact portions consistently held in a noncontacting relationship with a gap therebetween, before the terminals are inserted into the housings each of the terminals being formed such that the outside distance between the leg and the second contact portions is consistently held at a first distance, the insulative housing being molded such that the distance between the front and rear surface of each cavity is consistently held to a second distance which is less than the sum of the first distance and the thickness of the material, whereby
- when the terminals are inserted into the housing, the leg and second contact portion of each terminal rotate about the first reversely bent portion towards the first contact portion until the second contact portion contacts the first contacting portion, further insertion causing the leg to continue to rotate about the first reversely bent portin and the second contact portion to rotate about the second reversely bent portion, such that the first contact portion lies adjacent to the rear surface and the leg lies adjacent to the front surface, the outside distance between the leg and the first contact portion assuming substantially the distance between the front and rear surfaces.
A method of manufacturing an electrical socket having an insulative housing and a plurality of terminals such that the terminals have a predetermined preload between first and second contact portions, the housing having a plurality of cavities disposed in two parallel rows, ech cavity defined by a front surface and a rear surface and side surfaces therebetween, the terminals comprising a terminal portion which lies adjacent to the rear surface defining the first contact portion and extends downwardly to a floor, the terminal portion being reversely bent at the floor to project upwardly defining a leg adjacent to the front surface, thereafter being reversely bent downwardly and radiused to lie inside of, and adjacent to, the first contacting portion to define the second contact portion, the method including the steps of:
- stamping the terminals from a flat blank of conductive material having a known thickness;
- forming the terminals such that the legs and the second contact portions are angled away from the first contacting portions with the distance between the first and second contact portions consistently held in a noncontacting relationship with a gap therebetween;
- forming the terminals such that the outside distances between the legs and the second contact portions are consistently held at a first distance;
- molding the insulative housing such that the distance between the front and rear surface of each cavity is consistently held to a second distance which is less than the sum of the first distance and the thickness of the material;
- and
- inserting the terminals into the housings, the leg and second contact portion of each terminal rotating about the first reversely bent portion towards the first contacting portion until the second contacting portion contacts the first contacting portion, further insertion causing the leg to continue to rotate about the first reversely bent portion and the second contact portion to rotate about the second reversely bent portion, such that the first contacting portion lies adjacent to the rear surface and the leg lies adjacent to the front surface, the outside distance between the leg and the first contacting portion assuming substantially the distance between the front and rear surfaces.
An electrical socket for interconnecting thereto a semiconductor device of the type comprising a package body including a plurality of package leads extending downwardly therefrom, the socket comprising:
- an insulative housing comprising two parallel rows of cavities separated by a central support rib, each cavity including a rear surface, side surfaces, and a forward surface as part of the central support rib, the rear surface including an outwardly directed beveled surface and the forward surface including an inwardly directed beveled surface extending towards the axial centerline of the central support rib, the intersection of the forward surface and the beveled surface defining a corner;
- and
- a plurality of stamped and formed terminals having a first lead-in portion located adjacent to the outer beveled surface in transition with a portion extending downwardly which defines a first contacting portion, the terminal thereafter including a first reversely bent portion having an outer diameter which is less than the distance between the forward and rear surfaces, the first reversely bent portion extending a leg portion upwardly, the leg being in a contacting relationship with the corner, the leg having a second reversely bent portion which projects a diagonal portion downwardly towards the first contacting portion and thereafter being radiused to contact the first contacting portion.
Dependencies are inferred from the claim text.