This part is a kind of semiconductor called PFR20100CTI.

Function of this product has Schottky Rectifier.

Manufacturers : PFC Device Corporation

Image and pinout :

Some of the text within the PDF file :

PFC Device Corporation PFR20100CT PFR20100CTF PFR20100CTI PFR20100CTB the following features are made possible in a single device: Major ratings and characteristics Characteristics Values IF(AV) Rectangular Waveform 20 VRRM 100 VF@10A, Tj=125℃ Tj(operating/storage) 0.66 -65 to 175 Units A V V, typ ℃ ELECTRICAL: * Ultra-Low Forward Voltage Drop * Reliable High Temperature Operation * Softest, fast switching capability * 175OC Operating Junction Temperature * Lead Free Finish, RoHS Compliant Device optimized for ultra-low forward voltage drop to maximize efficiency in Power Supply applications MECHANICAL: * Molded Plastic TO-220AB, TO-262, TO-263, and ITO-220 packages PFR20100CT Case Styles PFR20100CTF PFR20100CTI PFR20100CTB 1 Anode 2 Common Cathode 3 Anode TO-220 [ ... ]

PFR20100CTI PDF Datasheet Download