Found 8 alternatives for 40TPS12 by Vishay General Semiconductor - Diodes Division. Thyristors Scrs — TO-247-3.
SCR 1.2KV 55A TO247AC
SCR 1.6KV 126A TO247-3
SCR 1.2KV 75A TO247S
SCR 1.2KV 55A TO247AC
SCR 1.2KV 55A TO247AD
SCR 1.4KV 30A TO247AD
SCR 1.2KV 30A TO247
SCR 1.6KV 55A TO247AC