Reusable die carrier for burn-in and burn-in methods (REUSABLE DIE CARRIER FOR BURN-IN AND BURN-IN PROCESS)

摘要

A reusable carrier 10 for temporarily holding the integrated circuit 12 during burn-in and electrical inspection includes a lid 16 attached to the base 14 by a base 14 and a fingernail 18. The flexible substrate 19 is attached to the base 14 with a suitable adhesive. The alignment posts 20 have a tapered surface 22 that engages the corners 24 of the integrated circuit 12 to accurately position the contact circuits on the upper surface of the substrate 19. The spring loaded latch 28 engages the protrusion 30 in the aperture 32 of the base 14 to support the hermetically sealed lid 16 throughout the integrated circuit 12. An electrical The conductive traces 34 have contact bumps that engage the contact pads underneath the circuit 12 to connect the circuit 12 directly to the peripheral contact pads 38 around the edge portion 40 of the substrate 19. [ . The spring 42 is positioned within the sealed position throughout the integrated circuit 12 so as to provide biasing force on the contact pads against the conductive traces 34 with sufficient force to ensure a possible electrical connection. If present, engages the top surface of the circuit 12. For burn-in, the temporary package containing the integrated circuit die 12 is loaded into the socket 48 on the burn-in plate 50 and loaded in the burn-in system, and standard burn-in is performed.