Probemat cleaning system using CO.sub.2 pellets

Details Probemat cleaning system using CO.sub.2 pellets Probemat cleaning system using CO.sub.2 pellets

1993-07-21

1994-11-15

Dean, Richard O.

Cleaning and liquid contact with solids

Processes

Using solid work treating agents

134 6, 134 18, 451 78, 451 53, 451 39, B08B 700, B24C 100, B24C 322, B24C 332

Patent

active

053644727

ABSTRACT:
A system for cleaning test probes attached to a probe mat fixture by propelling CO.sub.2 pellets at the test probes, by rotating the fixture so that the pellets impact different sides of the test probes, and by providing electrostatic protection for active devices mounted on the probemat fixture. The CO.sub.2 pellets are propelled so that they strike the test probes at an angle to the horizontal plane of the test probe as mounted on the probemat fixture. Electrostatic protection is provided by connecting all electrical connections to the probemat fixture to ground and by reducing electrostatic charge build up on the probemat fixture by using an ionizer to direct ions at the probemat fixture.

REFERENCES:
patent: 3778935 (1973-12-01), Callahan et al.
patent: 4535576 (1985-08-01), Shukla et al.
patent: 4617064 (1986-10-01), Moore
patent: 4974375 (1990-12-01), Tada et al.

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