Question

Inter-digitating of gate-cathode regions in SCR devices improves the

(a) I^2t rating

(b) di/dt rating

(c) dv/dt rating

(d) thermal resistance

This question was addressed to me in unit test.

Query is from Thyristor Mounting in portion Power Electronics Devices of Power Electronics

Answer 1

The correct answer is (b) di/dt rating

To elaborate: Inter-digitating is the inter-mixing of the gate-cathode area to improve the di/dt ratings. di/dt rating is improved by providing more cathode conduction area during the delay and rise time.