This part is a kind of semiconductor called SI2305.

Function of this product has 20V P-Channel Enhancement Mode MOSFET.

Manufacturers : HT Semi

Image and pinout :

Some of the text within the PDF file :

SI2305 20V P-Channel Enhancement Mode MOSFET VDS= -20V RDS(ON), Vgs@-4.5V, Ids@-2.8A RDS(ON), Vgs@-2.5V, Ids@-2.0A 130mΩ 190mΩ Features Advanced trench process technology High Density Cell Design For Ultra Low On-Resistance Package Dimensions D G S SOT-23(PACKAGE) REF. A B C D E F Millimeter Min. Max. 2.70 3.10 2.40 2.80 1.40 1.60 0.35 0.50 0 0.10 0.45 0.55 REF. G H K J L M Millimeter Min. Max. 1.90 REF. 1.00 1.30 0.10 0.20 0.40 0.85 1.15 0° 10° Maximum Ratings and Thermal Characteristics (TA = 25oC unless otherwise noted) Parameter Drain-Source Voltage Gate-Source Voltage Continuous Drain Current Pulsed Drain Current 1) Symbol Limit Unit VDS VGS ID IDM 2) -20 ±8 -2.2 -8 1.25 0.8 -55 to 150 100 166 o V A TA = 25o TA = 75oC 2) Maximum Power Dissipation PD TJ, Tst [ ... ]

SI2305 PDF Datasheet Download