This part is a kind of semiconductor called MT8103.

Function of this product has P-Channel Enhancement Mode Field Effect Transistor.

Manufacturers : MOS-TECH

Image and pinout :

Some of the text within the PDF file :

MOS-TECH Semiconductor Co.,LTD 茂鈿半導體股份有限公司 MT8103 P-Channel Enhancement Mode Field Effect Transistor Product Summary VDS= -30V ID= -13A (VGS= -10V) ≦ ΩRDS(ON) 10m @VGS= -10V ≦ ΩRDS(ON) 15.5m @VGS= -4.5V Applications： ▪ Notebook Computer ▪ Portable Battery Pack Features Advanced Trench Process Technology. High Density Cell Design for Ultra Low On-Resistance. Lead free product is acquired. RoHS Compliant. ℃Absolute Maximum Ratings (TA = 25 unless otherwise noted) Symbol VDS VGS ID IDM IS PD TJ, Tstg Parameter Drain-Source Voltage Gate-Source Voltage Continuous Drain Current 1 Pulsed Drain Current 2 Continuous Source Current (Diode Conduction) 1 Maximum Power Dissipation 1 Operating Junction and Storage Temperature Range 10s Steady State -30 ±20 -1 [ ... ]

MT8103 PDF Datasheet Download