This part is a kind of semiconductor called 123NQ100PBF.

Function of this product has SCHOTTKY RECTIFIER.

Manufacturers : International Rectifier

Image and pinout :

Some of the text within the PDF file :

Bulletin PD-21144 rev. A 10/06 123NQ100PbF SCHOTTKY RECTIFIER 120Amp Major Ratings and Characteristics Characteristics Description/ Features Units A V A V °C The 123NQ.. high current Schottky rectifier module series has been optimized for low reverse leakage at high temperature. The proprietary barrier technology allows for reliable operation up to 175 °C junction temperature. Typical applications are in high current switching power supplies, plating power supplies, UPS systems, converters, free-wheeling diodes, welding, and reverse battery protection. 175 °C TJ operation Low forward voltage drop High frequency operation Guard ring for enhanced ruggedness and long term reliability Lead-Free Values 120 100 IF(AV) Rectangular waveform VRRM IFSM VF TJ @ tp = 5 μs [ ... ]

123NQ100PBF PDF Datasheet Download