ESD protection using SCR clamping

Details ESD protection using SCR clamping ESD protection using SCR clamping

1994-02-17

1996-11-12

Fleming, Fritz M.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

361220, 361118, H05F 300, H02H 320

Patent

active

055746187

ABSTRACT:
An SCR clamp provides a low impedance discharge path for static charges across on IC's pins. The SCR clamp cathode, cathode, gate anode, and anode gate float when the protected IC is disconnected from its associated circuit elements. Under this condition, the SCR clamp can be turned on at the low Vh and Ih levels of the SCR, allowing the clamp to operate to discharge static electricity at the low voltage determined by SCR junction biases.

REFERENCES:
patent: 4870530 (1989-09-01), Hurst et al.
patent: 5012317 (1991-04-01), Rontre

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