This part is a kind of semiconductor called C4105.

Function of this product has 2SC4105.

Manufacturers : Sanyo

Image and pinout :

Some of the text within the PDF file :

Ordering number:EN2470A NPN Triple Diffused Planar Silicon Transistor 2SC4105 400V/4A Switching Regulator Applications Features · High breakdown voltage and high reliability. · Fast switching speed. · Wide ASO. · Adoption of MBIT process. Package Dimensions unit:mm 2010C [2SC4105] 10.2 3.6 5.1 4.5 1.3 2.7 6.3 15.1 18.0 5.6 1.2 2.7 14.0 Specifications 0.8 123 2.55 2.55 0.4 1 : Base 2 : Collector 3 : Emitter JEDEC : TO-220AB EIAJ : SC-46 Absolute Maximum Ratings at Ta = 25˚C Parameter Collector-to-Base Voltage Collector-to-Emitter Voltage Emitter-to-Base Voltage Collector Current Collector Current (Pulse) Base Current Collector Dissipation Junction Temperature Storage Temperature Symbol VCBO VCEO VEBO IC ICP IB PC Tj Tstg Conditions PW≤300µs, duty cycle≤10% Tc=2 [ ... ]

C4105 PDF Datasheet Download