This part is a kind of semiconductor called IRF530.

Function of this product has N-CHANNEL ENHANCEMENT MODE POWER MOS TRANSISTOR.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

IRF530 N-CHANNEL 100V - 0.115 Ω - 14A TO-220 LOW GATE CHARGE STripFET™ II POWER MOSFET TYPE VDSS RDS(on) ID IRF530 100 V <0.16 Ω 14 A s TYPICAL RDS(on) = 0.115Ω s AVALANCHE RUGGED TECHNOLOGY s 100% AVALANCHE TESTED s LOW GATE CHARGE s HIGH CURRENT CAPABILITY 3 s 175 oC OPERATING TEMPERATURE t(s)DESCRIPTION This MOSFET series realized with STMicroelectronics cunique STripFET™ process has specifically been udesigned to minimize input capacitance and gate charge. dIt is therefore suitable as primary switch in advanced rohigh-efficiency, high-frequency isolated DC-DC converters for Telecom and Computer applications. It is Palso intended for any applications with low gate drive terequirements. leAPPLICATIONS os HIGH CURRENT, HIGH SWITCHING SPEED bss SOLENOID AND RELAY DR [ ... ]

IRF530 PDF Datasheet Download