This part is a kind of semiconductor called SI2305ADS.
Function of this product has P-Channel 8-V (D-S) MOSFET.
Manufacturers : Vishay Siliconix
Image and pinout :

Some of the text within the PDF file :
www.DataSheet.co.kr New Product Si2305ADS Vishay Siliconix P-Channel 8-V (D-S) MOSFET FEATURES ID (A) - 4.1 - 3.4 - 2.0 7.8 nC Qg (Typ.) PRODUCT SUMMARY VDS (V) RDS(on) (Ω) 0.040 at VGS = - 4.5 V -8 0.060 at VGS = - 2.5 V 0.088 at VGS = - 1.8 V • Halogen-free Option Available • TrenchFET® Power MOSFET • 100 % Rg Tested RoHS COMPLIANT APPLICATIONS • Load Switch • DC/DC Converter TO-236 (SOT-23) S 3 S 2 D G G 1 Top View Si2305ADS (A5)* * Marking Code Ordering Information: Si2305ADS-T1-E3 (Lead (Pb)-free) Si2305ADS-T1-GE3 (Lead (Pb)-free and Halogen-free) D P-Channel MOSFET ABSOLUTE MAXIMUM RATINGS TA = 25 °C, unless otherwise noted Parameter Drain-Source Voltage Gate-Source Voltage TC = 25 °C TC = 70 °C TA = 25 °C TA = 70 °C TC = 25 °C TA = 25 °C TC = 25 °C T [ ... ]
SI2305ADS PDF Datasheet Download
