This part is a kind of semiconductor called BSC032N03S.
Function of this product has OptiMOS2 Power-Transistor.
Manufacturers : Infineon Technologies AG
Image and pinout :

Some of the text within the PDF file :
BSC032N03S OptiMOS®2 Power-Transistor Features • Fast switching MOSFET for SMPS • Optimized technology for notebook DC/DC converters • Qualified according to JEDEC for target applications • N-channel • Logic level • Excellent gate charge x R DS(on) product (FOM) • Very low on-resistance R DS(on) • Superior thermal resistance • Avalanche rated • dv /dt rated Type BSC032N03S Package P-TDSON-8 Ordering Code Q67042-S4219 1 Product Summary V DS R DS(on),max ID 30 3.2 50 V mΩ A P-TDSON-8 Marking 32N03S Maximum ratings, at T j=25 °C, unless otherwise specified Parameter Continuous drain current Symbol Conditions ID T C=25 °C T C=100 °C T A=25 °C, R thJA=45 K/W 2) Pulsed drain current Avalanche energy, single pulse Reverse diode dv /dt Gate source voltage Power diss [ ... ]
BSC032N03S PDF Datasheet Download
