Prefabricated rubber socket

A rubber socket disposed between a device under test and a tester to electrically connect terminals of the device under test and pads of the tester to each other, comprising:

• a plate-shaped support member comprising a central region portion having through holes formed therein and at positions corresponding to the terminals of the device under test, respectively and having a plurality of divided zones, and a peripheral region portion located outside the central region portion;
• and
• a plurality of electrically-conductive blocks, each block disposed in one of the divided zones of the support member and each block having a size corresponding to a size of one of the divided zones, respectively, the electrically-conductive blocks being individually manufactured prior to being disposed on the support member and independently separated from each other such that insulating parts of adjacent electrically-conductive blocks are not connected to each other, each electrically-conductive block being provided with electrically-conductive parts formed by arranging a plurality of electrically-conductive particles in an elastic insulating material in a thickness direction and an insulating part disposed around the electrically-conductive parts to insulate and support the electrically-conductive parts,
• wherein the electrically-conductive parts are formed at positions corresponding to the through holes of the divided zones, respectively, each electrically-conductive part has a lower protruding portion protruding below the insulating part, having a thickness greater than that of the support member and inserted into the through hole, and a lower surface of the insulating part is adhered to an upper surface of the support member by an adhesive applied the upper surface of the support member, so the electrically-conductive block is coupled to the support member.