This part is a kind of semiconductor called AP03N70H-A-HF.

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

Manufacturers : Advanced Power Electronics

Image and pinout :

Some of the text within the PDF file :

Advanced Power Electronics Corp. AP03N70H/J-A-HF Halogen-Free Product N-CHANNEL ENHANCEMENT MODE POWER MOSFET ▼ 100% Avalanche Test ▼ Fast Switching Characteristic ▼ Simple Drive Requirement ▼ RoHS Compliant & Halogen-Free G D S Description The TO-252 package is widely preferred for all commercial-industrial surface mount applications and suited for AC/DC converters. The through-hole version (AP03N70J) is available for low-profile applications. BVDSS RDS(ON) ID 650V 3.6Ω 3.3A G D S TO-252(H) Absolute Maximum Ratings Symbol Parameter VDS VGS ID@TC=25℃ ID@TC=100℃ IDM PD@TC=25℃ EAS TSTG TJ Drain-Source Voltage Gate-Source Voltage Continuous Drain Current, VGS @ 10V Continuous Drain Current, VGS @ 10V Pulsed Drain Current1 Total Power Dissipation Single Pulse Ava [ ... ]

AP03N70H-A-HF PDF Datasheet Download