Patent ID: 6566898
Filing Date: 2003-05-20
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 located 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 each of said upper and lower spaced die members having a spacer member, each of said spacer members comprised of a laminated structure with a coefficient of thermal expansion substantially matching that of the circuit substrate, each spacer member having an aperture therethrough, a thin sheet of ceramic material disposed over said aperture with a coefficient of thermal expansion substantially matching that of the circuit substrate, and an adhesive securing the sheet of ceramic material over said aperture, each sheet having a plurality of holes therethrough forming one of said upper and lower patterns of holes.