Methods of achieving linear capacitance in symmetrical and...

Details Methods of achieving linear capacitance in symmetrical and... Methods of achieving linear capacitance in symmetrical and...

2011-01-04

2011-01-04

Pert, Evan (Department: 2826)

Wave transmission lines and networks

Transmission line inductive or radiation interference...

C327S565000

Reexamination Certificate

active

07863995

ABSTRACT:
A transient voltage suppressing (TVS) circuit with uni-directional blocking and symmetric bi-directional blocking capabilities integrated with an electromagnetic interference (EMI) filter supported on a semiconductor substrate of a first conductivity type. The TVS circuit integrated with the EMI filter further includes a ground terminal disposed on the surface for the symmetric bi-directional blocking structure and at the bottom of the semiconductor substrate for the uni-directional blocking structure and an input and an output terminal disposed on a top surface with at least a Zener diode and a plurality of capacitors disposed in the semiconductor substrate to couple the ground terminal to the input and output terminals with a direct capacitive coupling without an intermediate floating body region.

REFERENCES:
patent: 4342013 (1982-07-01), Kallman
patent: 5780905 (1998-07-01), Chen et al.
patent: 2003/0228848 (2003-12-01), Escoffier et al.

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