This part is a kind of semiconductor called CMP40P03.
Function of this product has P-Ch -30V Fast Switching MOSFETs.
Manufacturers : Cmos
Image and pinout :

Some of the text within the PDF file :
CMP40P03 P-Ch -30V Fast Switching MOSFETs General Description The CMP40P03 is a P-channel Power MOSFET. It has specifically been designed to minimize input capacitance and gate charge. The device is therefore suitable in advanced high-efficiency switching applications. Features Advanced Process Technology Ultra Low On-Resistance Dynamic dv/dt Rating Fast Switching Fully Avalanche Rated Lead-Free Absolute Maximum Ratings Product Summery BVDSS -30V RDSON 14m ID -40 A Applications LED POWER CONTROLLER DC-DC & DC-AC CONVERTERS HIGH CURRENT, HIGH SPEED SWITCHING SOLENOID AND RELAY DRIVERS MOTOR CONTROL, AUDIO AMPLIFIERS TO220 Pin Configuration D G DS TO-220 (CMP40P03) G S Symbol VDS VGS ID@TC=25 ID@TC=100 IDM PD@TC=25 TSTG TJ Parameter Drain-Source Voltage Gate-Sou ce Voltage Conti [ ... ]
CMP40P03 PDF Datasheet Download
