This part is a kind of semiconductor called C4160.

Function of this product has 2SC4160.

Manufacturers : Sanyo Semicon Device

Image and pinout :

Some of the text within the PDF file :

Ordering number:ENN2481C NPN Triple Diffused Planar Silicon Transistor 2SC4160 400V/4A Switching Regulator Applications Features · High breakdown voltage. · High reliability. · Fast switching speed (tf=0.1µs typ). · Wide ASO. · Adoption of MBIT process. · Micaless package facilitating mounting. Package Dimensions unit:mm 2041A [2SC4160] 10.0 3.2 3.5 7.2 4.5 2.8 18.1 16.0 5.6 14.0 1.6 1.2 0.75 1 2 3 2.55 2.4 2.4 0.7 2.55 Specifications 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 2.55 2.55 1 : Base 2 : Collector 3 : [ ... ]

C4160 PDF Datasheet Download