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Browse Prior Art Database

Compatible Custom Contactor

IP.com Disclosure Number: IPCOM000052915D
Original Publication Date: 1981-Jul-01
Included in the Prior Art Database: 2005-Feb-12
Document File: 3 page(s) / 80K

Publishing Venue

IBM

Related People

Byrnes, HP: AUTHOR [+2]

Abstract

This is a wafer or chip contactor which is an alternative to presently used commercial cantilever contactors. It consists of probe and space transformer portions. The probe portion is separable and consists of two dies (one of which also serves as a housing), contacts, and a sighting window with reticle. The space transformer is epoxied to a modified `popout' card and consists of a housing containing potted discrete wires which fan out from the upper contact `footprint'. A custom `popout' card with appropriate printed circuitry could also serve as a space transformer.

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Compatible Custom Contactor

This is a wafer or chip contactor which is an alternative to presently used commercial cantilever contactors. It consists of probe and space transformer portions. The probe portion is separable and consists of two dies (one of which also serves as a housing), contacts, and a sighting window with reticle. The space transformer is epoxied to a modified `popout' card and consists of a housing containing potted discrete wires which fan out from the upper contact `footprint'. A custom `popout' card with appropriate printed circuitry could also serve as a space transformer.

In practice, `popout' contactors plug into a printed circuit `motherboard'. Theta and X/Y adjustments are performed in a `see-thru' manner utilizing the reticle on the sighting window which may be at or several chip sites away from the contact location. Contact deflection may be observed through the upper opening at the contact location. For comparison, `see-thru' sighting on a cantilever contactor is accomplished by viewing the contact tip areas through the mounting ring. Advantages lie in quick turnaround, repairability, accuracy of contact placement, and manufacturability.

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