2SD646 NPN switching transistor
VCBO 600v
VEBO 5v
Ic 50A
Pc 400W(Tc=25ﾟC)
Tj 150 degrees centegrade
hFE >150
fab/ft* 5 Mhz
Cob 600pf
Pac. Dim. No 319
http://homepage3.nifty.com/ebina2540...D0601-0700.htm
Couldn't cross it easily, big voltage and amperage.