US PATENT SUBCLASS 257 / 740
.~ With means to prevent contact from penetrating shallow pn junction (e.g., prevention of aluminum "spiking")

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

734  DF  COMBINED WITH ELECTRICAL CONTACT OR LEAD {14}
740.~ With means to prevent contact from penetrating shallow pn junction (e.g., prevention of aluminum "spiking")

DEFINITION

Classification: 257/740

With means to prevent contact from penetrating shallow PN junction (e.g., prevention of aluminum "spiking"):

(under subclass 734) Subject matter wherein means are provided for preventing an electrical contact from penetrating into the relatively thin PN junction region.

(1) Note. This penetration is sometimes referred to as "spiking", and if the contact material is aluminum, prevention of this phenomenon is known as prevention of aluminum spiking.