This part is a kind of semiconductor called MBR35100.
Function of this product has 35 Amp Rectifier 20 to 100 Volts Schottky Barrier.
Manufacturers : Micro Commercial Components
Image and pinout :

Some of the text within the PDF file :
MCC Features • • • • omponents 21201 Itasca Street Chatsworth !"# $ % !"# MBR3520 THRU MBR35100 35 Amp Schottky Barrier Rectifier 20 to 100 Volts DO-4 B Metal of siliconrectifier, majonty carrier conducton Guard ring for transient protection Low power loss high efficiency High surge capacity, High current capability Maximum Ratings • • Operating Temperature: -55°C to +175°C Storage Temperature: -55°C to +175°C Maximum Recurrent Peak Reverse Voltage 20V 30V 35V 40V 45V 60V 80V 100V Maximum DC Blocking Voltage 20V 30V 35V 40V 45V 60V 80V 100V N M C J MCC Part Number MBR3520 MBR3530 MBR3535 MBR3540 MBR3545 MBR3560 MBR3580 MBR35100 Maximum RMS Voltage 14V 21V 24.5V 28V 31.5V 42V 56V 70V P H F G D Electrical [ ... ]
MBR35100 PDF Datasheet Download
