This part is a kind of semiconductor called 2SC4001.

Function of this product has Silicon NPN Power Transistor.

Manufacturers : Inchange Semiconductor

Image and pinout :

Some of the text within the PDF file :

INCHANGE Semiconductor isc Silicon NPN Power Transistor isc Product Specification 2SC4001 DESCRIPTION ·The 2SC4001is designed for uses of high-resolution monitor TV applications.This makes it possible to raise the video band Of high-resolution monitor TVs to 50MHz. FEATURES ·Collector–Emitter Sustaining Voltage- : VCBO = 300 V(Min) ·Complement to Type 2SA1546 ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE UNIT VCBO Collector-Base Voltage 300 V VCEO Collector-Emitter Voltage 250 V VEBO Emitter-Base Voltage 5V IC Collector Current-Continuous PC Collector Power Dissipation TC=25℃ Ti Junction Temperature Tstg Storage Temperature Range 0.1 7 150 -55~150 A W ℃ ℃ isc website：www.iscsemi.com 1 isc & iscsemi is registered trademark INCHANGE Semicond [ ... ]

2SC4001 PDF Datasheet Download