This part is a kind of semiconductor called WPM2341.

Function of this product has P-Channel Enhancement Mode Mosfet.

Manufacturers : SEMIWILL

Image and pinout :

Some of the text within the PDF file :

TM WPM2341 P-Channel Enhancement Mode Mosfet FEATURES • Higher Efficiency Extending Battery Life • Miniature SOT23-3 Surface Mount Package • Super high density cell design for extremely low RDS (ON) APPLICATIONS • DC/DC Converter • Load Switch • Battery Powered System • LCD Display inverter • Power Management in Portable, Battery Powered Products SOT23-3 PACKAGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS TA = 25 °C, unless otherwise noted Parameter Drain-Source Voltage Gate-Source Voltage TA=25°C Continuous Drain Current (TJ = 150 °C) a Symbol VDS VGS 5s -20 Steady State Unit V ±8 -4.3 ID TA=80°C Pulsed Drain Current Continuous Source Current (Diode Conduction) a -3.5 -2.5 A -20 -3.2 IDM IS -1.7 1.25 PD 0.7 TJ, Tstg - 55 to 150 -1 0.75 W 0.42 °C TA=25°C [ ... ]

WPM2341 PDF Datasheet Download