Patent ID: 6163162
Filing Date: 2000-12-19
Classification: G01R

Abstract:
An improved temperature compensated vertical pin probing device for probing integrated circuits over a large temperature range, the integrated circuits having spaced contact pads on a circuit substrate to be contacted by probe pins for testing, the probing device being of a known type comprising upper and lower spaced die members respectively defining upper and lower patterns of holes therethrough corresponding to the integrated circuit contact pad spacing at a preselected temperature, and a plurality of probe pins, each pin being disposed in a pair of upper and lower holes and extending beyond the lower die to terminate in a probe tip, the improvement comprising a die member having a die substrate with a coefficient of thermal expansion substantially matching that of the circuit substrate, said die substrate defining at least one aperture therethough having aperture sidewalls, at least one insert of insulating material disposed in said at least one aperture with a coefficient of thermal expansion greater than that of the circuit substrate and having insert sidewalls arranged to restrain the expansion of said insert in said aperture at elevated temperature, and an adhesive securing the insert sidewalls to the recess sidewalls, said insert defining a plurality of holes therethrough forming part of a said pattern of holes.