Test fixture for tab circuits and devices

Details Test fixture for tab circuits and devices Test fixture for tab circuits and devices

1988-03-29

1989-06-13

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324 73PC, 324158P, G01R 3102, G01R 3128

Patent

active

048395870

ABSTRACT:
A test fixture for TAB (Tap Automated Bonding) circuits includes circuit boards for maintaining a characteristic impedance to inner lead bond areas of a circuit under test. A plurality of vertically disposed test pins are soldered to conductors in one of the circuit boards, and provide contacts for supplying power and test signals to test pads on a circuit under test. A thermoelectric heat pump is thermally connected to a circuit under test with a copper thermal chuck or heat spreader, and is used to subject the circuit to a wide range of operating temperatures. A two piece anvil is provided to apply pressure to the test pad/test pin interface and to the circuit die/thermal chuck interface.

REFERENCES:
patent: 3643201 (1972-02-01), Harwood
patent: 3710251 (1973-01-01), Hagge et al.
patent: 3979671 (1976-09-01), Meeker et al.
patent: 4402185 (1983-09-01), Perchak
patent: 4560962 (1985-12-01), Barrow
patent: 4604572 (1986-08-01), Horiuchi et al.
patent: 4616178 (1986-10-01), Thornton et al.
patent: 4672313 (1987-06-01), Hartmann et al.
patent: 4727720 (1988-03-01), Wernicki

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