Metal working – Method of mechanical manufacture – Electrical device making
Patent
1989-06-15
1990-08-21
Echols, P. W.
Metal working
Method of mechanical manufacture
Electrical device making
29846, 29847, 361402, 427101, H01C 1706
Patent
active
049494538
ABSTRACT:
A generic chip carrier is described which includes, as integral parts, a voltage bus and a plurality of terminating resistors connected between the voltage bus and signal traces on the carrier. The voltage bus wraps around the chip carrier, thus providing a large area of metal. Through the selective use of the terminating resistors, the generic carrier can be customized for a particular type of integrated circuit, i.e., source or destination termination of signals. A signal trace may be customized by "opening" the terminating resistor with a current spike applied by a standard electrical probe. Spare bonding pads and terminating resistors are placed at intervals about the periphery of the carrier as insurance against defective or mistakenly removed terminating resistors.
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Harold J. Pawluk, Thin Film Resistors Plated on Circuit Boards, Jul. 1967, pp. 62-64.
August Melvin C.
Kruchowski James N.
Nelson Stephen
Neumann Eugene F.
Steitz Richard R.
Cray Research Inc.
Echols P. W.
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