Part Number : ST300C
Function : 560A, PHASE CONTROL THYRISTOR
Package : Hockey Puk Version, TO-200AC
Maker : International Rectifier
Image : 
Description :
1. Center amplifying gate
2. Metal case with ceramic insulator
3. International standard case TO-200AC (B-PUK)
Typical Applications
1. DC motor controls
2. Controlled DC power supplies
3. AC controllers
Datasheet PDF Download : 
Others datasheet of same file :
ST300C04L1, ST300C08L1, ST300C12L1, ST300C16L1