Patent ID: 7256430

Claim:
A semiconductor device comprising: a thyristor having first and second base regions disposed serially between first and second emitter regions; a capacitor electrode comprising a surface disposed over at least one of the first and second base regions; dielectric of first thickness disposed between the surface of the capacitor electrode and the first base region; dielectric of second thickness disposed between the second base region and the surface of the capacitor electrode, the dielectric of second thickness substantially thicker than that of the first thickness; a foot disposed in spaced relationship over at least a portion of the first base region of the thyristor and separated therefrom by the dielectric of first thickness, a body extending upwardly from the foot, and at least one arm extending laterally outward from the body, one of the arm(s) over a portion of the second base and spaced therefrom, at least in part, by the dielectric of the second thickness.