This part is a kind of semiconductor called MB102.

Function of this product has High Current Bridge Rectifier.

Manufacturers : Comchip Technology

Image and pinout :

Some of the text within the PDF file :

High Current Bridge Rectifier MB Series Reverse Voltage: 50 - 1000 Volts Forward Current: 10/15/25/35/50 Amp Features Surge overload 200 - 400 Amp peak Low forward voltage dro Mounting position: Any Electrically isolated base - 1800 Volts Solderable 0.25” FASTON terminals Materials used carries U/L recognition Terminals/Metal COMCHIP www.comchiptech.com Lead/Metal Mechanical Data Case:Metal Case with Electrically Isolated Epoxy Terminals: Plated Leads Solderable per MIL-STD-202, Method 208 Mounting: Through Hole for #10 Screw Weight: 30 grams (approx.) - “W” Suffix Designates Wire Leads - No Suffix Designates Faston Terminals MB MB-W TERMI NALS LEAD Dim Min Max Min Max A 28.40 28.70 28.40 28.70 B 10.97 11.23 10.97 11.23 C 15.70 16.70 17.10 19.10 D 17.50 18. [ ... ]

MB102 PDF Datasheet Download