This part is a kind of semiconductor called 20ETS12PBF.

Function of this product has INPUT RECTIFIER DIODE.

Manufacturers : International Rectifier

Image and pinout :

Some of the text within the PDF file :

Bulletin I2192 12/04 SAFEIR Series 20ETS12PbF INPUT RECTIFIER DIODE Lead-Free ("PbF" suffix) VF < 1V @ 10A IFSM = 300A Description/ Features The 20ETS12PbF rectifier SAFEIR series has been optimized for very low forward voltage drop, with moderate leakage. The glass passivation technology used has reliable operation up to 150°C junction temperature. Typical applications are in input rectification and these products are designed to be used with International Rectifier Switches and Output Rectifiers which are available in identical package outlines. VRRM = 1200V Output Current in Typical Applications Applications Capacitive input filter TA = 55°C, TJ = 125°C, common heatsink of 1°C/W Single-phase Bridge 16.3 Three-phase Bridge 21 Units A Major Ratings and Char [ ... ]

20ETS12PBF PDF Datasheet Download