Gain-product in pnpn-structures at high current densities and the impact on the IV-characteristic

Pnpn-structures show a sudden increase in on-state clamping voltage due to insufficient gain product of their internal BJTs at high current densities. This can be described with bipolar theory and high-current effects. High-current IV characteristics confirm a gain product decrease and critical current densities are extracted from two terminal pnpn-structures.