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1. (WO2001006271) A TEST SOCKET AND METHOD FOR TESTING AN IC DEVICE IN A DEAD BUG ORIENTATION

Pub. No.:    WO/2001/006271    International Application No.:    PCT/US2000/019169
Publication Date: Fri Jan 26 00:59:59 CET 2001 International Filing Date: Fri Jul 14 01:59:59 CEST 2000
IPC: G01R 1/04
Applicants: CERPROBE CORPORATION
Inventors: BARABI, Nasser
Title: A TEST SOCKET AND METHOD FOR TESTING AN IC DEVICE IN A DEAD BUG ORIENTATION
Abstract:
A test socket (11) for testing an optical IC device in a dead bug orientation includes a socket body (13) with a device under test cavity (DUT cavity) (17) for receiving an optical IC device under test (optical DUT) (47) in a contact-up or dead bug orientation. The DUT cavity (17) has a bottom wall (91) with at least one aperture (95) through which the photoactive side of the optical DUT held in the cavity can be illuminated. An outer array of axial contact elements (53) arranged about the DUT cavity provides conductive paths through the socket body. The test socket (11) further includes a plunger assembly (25) insertable into the DUT cavity (17) of the socket body (13) having an inner array of axial contact elements (51) which extend through the plunger assembly and which are configured to provide contact with the contacts on the contact side (45) of the optical DUT. A transverse conductor bridge (55) at the top of the plunger assembly (25) provides a transverse electrical path connecting the inner array of axial contact elements (51) of the plunger assembly and the outer array of axial contact elements (53) of the socket body when the plunger assembly is inserted into the DUT cavity. An electrical path is thereby provided between the contacts of the contact optical DUT and the bottom of the socket body mounted to the DUT board through the plunger assembly and socket body.