This part is a kind of semiconductor called C3090.

Function of this product has 2SC3090.

Manufacturers : Sanyo

Image and pinout :

Some of the text within the PDF file :

Ordering number:EN1013C NPN Triple Diffused Planar Silicon Transistor 2SC3090 500V/10A Switching Regulator Applications Features · High breakdown voltage (VCBO≥800V). · Fast switching speed. · Wide ASO. Package Dimensions unit:mm 2022 [2SC3090] 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 PW≤300µs, duty cycle≤10% Tc=25˚C Switching Time Test Circuit E : Emitter C : Collector B : Base SANYO : TO-3PB Ratings 800 500 7 10 20 4 2.5 100 150 –55 to +150 Unit V V V A A W W W ˚C ˚C Unit (resistance : �� [ ... ]

C3090 PDF Datasheet Download