This part is a kind of semiconductor called AP9452GG-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 :

AP9452GG-HF Halogen-Free Product Advanced Power Electronics Corp. ▼ Lower gate charge ▼ Capable of 2.5V gate drive ▼ Single Drive Requirement ▼ RoHS Compliant G S D N-CHANNEL ENHANCEMENT MODE POWER MOSFET BVDSS RDS(ON) ID 20V 50mΩ 4A Description Advanced Power MOSFETs from APEC provide the designer with the best combination of fast switching, ruggedized device design, ultra low on-resistance and cost-effectiveness. D S SOT-89 D G Absolute Maximum Ratings Symbol VDS VGS ID@TA=25℃ ID@TA=70℃ IDM PD@TA=25℃ TSTG TJ Parameter Drain-Source Voltage Gate-Source Voltage Continuous Drain Current, VGS @ 4.5V Continuous Drain Current, VGS @ 4.5V Pulsed Drain Current 1 3 3 Rating 20 +16 4 2.5 12 1.25 0.01 -55 to 150 -55 to 150 Units V V A A A W W/ ℃ ℃ ℃ Total Power Dissi [ ... ]

AP9452GG-HF PDF Datasheet Download