Patent ID: 6019564
Filing Date: 2000-02-01
Classification: G01R,H05K

Abstract:
An IC testing apparatus comprising:a constant temperature chamber comprising a soak stage, a testing section, and an unloading section;a contact arm transporting an object IC device to be tested from the soak stage to the testing section in which the object IC device is subjected to predetermined tests and then transporting the thus tested object IC device to the unloading section, said soak stage being supplied at a loading position with the object IC devices to be tested for applying a sufficient temperature stress to said object IC devices;a turntable comprising at least first and second concentric circular rows of positioning recesses spaced at equal angular intervals from adjacent recesses and provided in said soak stage to be intermittently rotated at said angular interval so as to circulate one after another of the positioning recesses of each of said first and second circular rows at a loading position, a delivering position and a transfer position in a circulate order;loading means for successively loading the object IC devices one after another into one of the positioning recesses of the first circular row which locates at the loading position; andtransfer means for transferring each of the object IC devices which has been carried in one of the positioning recesses of the first circular row on said turntable for substantially one revolution thereof to reach the transfer position that is equal to said loading position or slightly forwarded from the loading position in the circulate order into one of the positioning recesses of the second circular row at the transfer position;whereby each one of said object IC devices transferred into said one of the positioning recesses of the second row is further rotated through a predetermined angle from the transfer position to the delivering position whereat each of said object IC devices is picked-up by said contact arm, so that the thus picked-up object IC device applied with a sufficient temperature stress while being retained on the turntable for more than one revolution thereof is transported to the test section.