2P4M NEC T0-202 2A 400V SCR Thyristor 

Non-repetitive Peak Reverse voltage: 600V

Repetitive Peak Reverse voltage: 400V

ON-state current: 2A

Surge non-repetitive current: 20A

Peak gate forward current: 0.2A

Peak gate forward power dissipation: 0.5W

http://www.ges.cz/sheets/2/2p4_6m.pdf