This part is a kind of semiconductor called GBJ10005.

Function of this product has 10 Amp Glass Passivated Bridge Rectifier 50 to 1000 Volts.

Manufacturers : Micro Commercial Components

Image and pinout :

Some of the text within the PDF file :

MCC Features
  omponents 21201 Itasca Street Chatsworth    !"# $ %    !"# GBJ10005 THRU GBJ1010 10 Amp Glass Passivated Bridge Rectifier 50 to 1000 Volts GBJ I A H Rating to 1000V PRV Ideal for printed circuit board Low forward voltage drop, high current capability. Reliable low cost construction utilizing molded plastic technique results in inexpensive product Maximum Ratings • • MCC Catalog Number GBJ10005 GBJ1001 GBJ1002 GBJ1004 GBJ1006 GBJ1008 GBJ1010 Device Marking Operating Temperature: -55 °C to +150°C Storage Temperature: -55°C to +150°C Maximum Reccurrent Peak Reverse Voltage 50V 100V 200V 400V 600V 800V 1000V Maximum RMS Voltage 35V 70V 140V 280V 420V 560V 700V Maximum DC Blocking Voltage 50V 100V 200V 400V 600V 8 [ ... ]

GBJ10005 PDF Datasheet Download