This part is a kind of semiconductor called 50N03.

Function of this product has Power Transistor.

Manufacturers : Tuofeng

Image and pinout :

Some of the text within the PDF file :

Shenzhen Tuofeng Semiconductor Technology Co., Ltd 50N03 Power-Transistor Features • Fast switching MOSFET for SMPS • Optimized technology for 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) • Avalanche rated • Pb-free plating; RoHS compliant Type 50N03 2 1 3 1) Product Summary V DS R DS(on),max ID 30 5 50 V mΩ A 50N03 1 2 3 Package Marking TO-252 50N03 TO-251 50N03 Maximum ratings, at T j=25 °C, unless otherwise specified Parameter Continuous drain current Symbol Conditions ID V GS=10 V, T C=25 °C V GS=10 V, T C=100 °C V GS=4.5 V, T C=25 °C V GS=4.5 V, T C=100 °C Pulsed drain current2) Avalanche current, single pulse 3) Avalanc [ ... ]

50N03 PDF Datasheet Download