This part is a kind of semiconductor called C4580.
Function of this product has 2SC4580.
Manufacturers : Shindengen
Image and pinout :
Some of the text within the PDF file :
SHINDENGEN Switching Power Transistor 2SC4580 (TP8W45FX) 8A NPN OUTLINE DIMENSIONS Case : ITO-3P FX Series Unit : mm RATINGS ●Absolute Maximum Ratings Item Storage Temperature Junction Temperature Collector to Base Voltage Collector to Emitter Voltage Emitter to Base Voltage Collector Current DC Collector Current Peak Base Current DC Base Current Peak Total Transistor Dissipation Dielectric Strength Mounting Torque Symbol Tstg Tj VCBO VCEO VCEX VEBO IC ICP IB IBP PT Vdis TOR Conditions VEB = 5V Tc = 25℃ Terminals to case, AC 1 minute ●Electrical Characteristics (Tc=25℃) Item Symbol Collector to Emitter Sustaining Voltage Collector Cutoff Current Emitter Cutoff Current DC Current Gain Collector to Emitter Saturation Voltage Base to Emitter Saturation Voltage Thermal Resistanc [ ... ]