This part is a kind of semiconductor called 20T03GH.

Function of this product has AP20T03GH.

Manufacturers : Advanced Power Electronics

Image and pinout :

Some of the text within the PDF file :

Advanced Power Electronics Corp. AP20T03GH/J RoHS-compliant Product N-CHANNEL ENHANCEMENT MODE POWER MOSFET ▼ Lower Gate Charge ▼ Simple Drive Requirement ▼ Fast Switching Characteristic Description G D S The TO-252 package is widely preferred for all commercial-industrial surface mount applications and suited for low voltage applications such as DC/DC converters. The through-hole version (AP20T03GJ) is available for low-profile applications. BVDSS RDS(ON) ID 30V 50mΩ 12.5A G D S TO-252(H) Absolute Maximum Ratings Symbol Parameter VDS VGS ID@TC=25℃ ID@TC=100℃ IDM PD@TC=25℃ Drain-Source Voltage Gate-Source Voltage Continuous Drain Current Continuous Drain Current Pulsed Drain Current1 Total Power Dissipation Linear Derating Factor TSTG Storage Temperature Range [ ... ]

20T03GH PDF Datasheet Download