This part is a kind of semiconductor called AP4435GH.

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

Manufacturers : Advanced Power Electronics

Image and pinout :

Some of the text within the PDF file :

AP4435GH/J RoHS-compliant Product Advanced Power Electronics Corp. ▼ Simple Drive Requirement ▼ Lower On-resistance ▼ Fast Switching Characteristic G S D P-CHANNEL ENHANCEMENT MODE POWER MOSFET BVDSS RDS(ON) ID -30V 20mΩ -40A Description 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 (AP4435GJ) is available for low-profile applications. G D S TO-252(H) G D S TO-251(J) Absolute Maximum Ratings Symbol VDS VGS ID@TC=25℃ ID@TC=100℃ IDM PD@TC=25℃ TSTG TJ Parameter Drain-Source Voltage Gate-Source Voltage Continuous Drain Current, VGS @ 10V Continuous Drain Current, VGS @ 10V Pulsed Drain Current 1 Rating -30 +20 -40 -25 -150 44.6 0.36 [ ... ]

AP4435GH PDF Datasheet Download