Accession Number : ADD005650

Title :   Probe Station.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Tracy,John M

Report Date : 19 Sep 1978

Pagination or Media Count : 7

Abstract : This patent describes a probe station having a cryogenic container preferably situated in a vacuum chamber. Semiconductor devices to be tested are attached to the container of cryogenic liquid. Electrical contact to the devices is made using contact wires which are moved by manipulators lying outside the vacuum chamber. Integrity of the vacuum at the manipulators is assured by using bellows to allow for the movement of the contact wires. Visual placement of the contact wires on the devices to be tested is accomplished with the aid of a microscope external to the vacuum. The semiconductor devices are then tested by the connection of the appropriate test equipment to the electrical contact wires. As a result thereof, semiconductor devices can be reliably and effectively tested under the same pressure and temperature at which they are operable.

Descriptors :   *Patents, *Test facilities, *Cryogenics, *Containers, Vacuum chambers, Semiconductor devices, Electric contacts, Wire, Manipulators, Microscopes, Plastics, Viewers, Bellows, Pressure, Test equipment

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE