PGA type IC socket
View Patent ↗A PGA IC socket, in which socket contacts are arranged at high density, and that performs positioning of an IC package without inhibiting the high density arrangement of the socket contacts. The PGA type IC socket contains a large number of socket contacts for contacting a large number of lead pins of an electrical device; a socket housing, in which a large number of cavities for housing the socket contacts are arranged in a matrix; and a drive portion for moving the lead pins. Each of the socket contacts has a pair of narrowly spaced resilient contact portions for contacting a lead pin. Cutouts, which are open toward the electrical device, are formed in walls of the cavities, such that cavities which are adjacent in the direction perpendicular to the lead pins are in communication with each other.
1. A pin grid array (PGA) integrated circuit (IC) socket, comprising:
a socket housing; having a plurality of socket contacts for contacting lead pins of another electrical device and a plurality of cavities, which are arranged two dimensionally, for housing each of the socket contacts in the same orientation;
a drive portion, for moving the lead pins in a direction perpendicular to an insertion direction thereof;
a pair of narrowly spaced resilient contact portions for contacting the lead pins, which have been moved in the perpendicular direction; and
cutouts formed in the walls of the cavities toward the other electrical device, such that cavities, which are adjacent to each other in the perpendicular direction, are in communication with each other.
2. The PGA IC socket as defined in claim 1 , further comprising a stopper, for preventing disengagement of the lead pins in the perpendicular direction, formed at a distal end of at least one of the pair of resilient contact portions.
3. The PGA IC socket as defined in claim 1 , further comprising stopper walls, for abutting lead pins which are not involved in the electrical contact with the socket contacts.
4. The PGA IC socket as defined in claim 1 , wherein the dimensions of the cutouts in the insertion direction of the lead pins are greater than the insertion depth of the lead pins.
5. The PGA IC socket as defined in claim 2 , further comprising stopper walls, for abutting lead pins which are not involved in the electrical contact with the socket contacts.
6. The PGA IC socket as defined in claim 2 , wherein the dimensions of the cutouts in the insertion direction of the lead pins are greater than the insertion depth of the lead pins.
7. The PGA IC socket as defined in claim 3 , wherein the dimensions of the cutouts in the insertion direction of the lead pins are greater than the insertion depth of the lead pins.
8. An integrated circuit (IC) socket, comprising:
a socket housing having a plurality of cavities defined by walls;
cutouts formed in the walls, such that adjacent cavities, are in communication with each other;
a drive portion associated with the socket housing; and,
a plurality of socket contacts, each of the socket contacts having a pair of narrowly spaced resilient contact portions being disposed in respective ones of the plurality of cavities.
9. The IC socket as defined in claim 8 , further comprising a stopper formed at a distal end of at least one of the pair of resilient contact portions.
10. The IC socket as defined in claim 8 wherein the socket housing further comprises stopper walls extending from the walls.
11. The IC socket as defined in claim 9 , further comprising stopper walls extending from the walls.
12. The IC socket as defined in claim 9 , wherein the dimensions of the cutouts in the insertion direction are greater than the insertion depth of lead pins to be inserted therein.