Integrated circuit protection device comprising diode having lar

Details Integrated circuit protection device comprising diode having lar Integrated circuit protection device comprising diode having lar

1977-04-27

1978-08-08

Clawson, Jr., Joseph E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

357 13, 357 34, 357 65, 361 56, 361 91, H01L 2702

Patent

active

041060482

ABSTRACT:
A protection device for integrated circuits used on television sets is described which protects the devices against damage of the type caused by kinescope arcing.
The protection device described comprises a diode having a first region of the same conductivity type as the emitter region of the protected bipolar transistor and a second region of opposite conductivity type to the first region which second region contacts only the collector of the protected transistor. An electrode contacts the first region of the diode over a much larger area than the area the same electrode makes contact to the emitter of the protected bipolar transistor in order to allow large transient currents to go to ground through the diode rather than through the transistor thereby protecting the transistor from destruction due to transient discharges.

REFERENCES:
patent: 4017882 (1977-04-01), Kannam et al.
patent: 4053336 (1977-10-01), Grundy et al.

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