This part is a kind of semiconductor called C4159.

Function of this product has 2SC4159.

Manufacturers : Sanyo Semicon Device

Image and pinout :

Some of the text within the PDF file :

Ordering number:EN2535 PNP/NPN Epitaxial Planar Silicon Transistors 2SA1606/2SC4159 High-Voltage Switching, AF 100W Driver Applications Applications · High-voltage switching, AF power amplifier, 100W output predrivers. Package Dimensions unit:mm 2041 [2SA1606/2SC4159] Features · Micaless package facilitating mounting. ( ) : 2SA1606 E : Emitter C : Collector B : Base SANYO : TO-220ML 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) Collector Dissipation Junction Temperature Storage Temperature Symbol VCBO VCEO VEBO IC ICP PC Tj Tstg Conditions Ratings (–)180 (–)160 (–)6 (–)1.5 (–)3 Unit V V V A A W Tc=25˚C 15 1 [ ... ]

C4159 PDF Datasheet Download