This part is a kind of semiconductor called STU03L01.

Function of this product has N-Channel Logic Level Enhancement Mode Field Effect Transistor.

Manufacturers : SamHop Microelectronics

Image and pinout :

Some of the text within the PDF file :

Green Product STU03L01 STD03L01 Ver 1.0 S a mHop Microelectronics C orp. N-Channel Logic Level Enhancement Mode Field Effect Transistor PRODUCT SUMMARY V DSS 100V ID 2A R DS(ON) ( Ω) Max 0.9 @ VGS=10V 1.1 @ VGS=4.5V FEATURES Super high dense cell design for low R DS(ON). Rugged and reliable. TO-252 and TO-251 Package. ESD Protected. G S G D S STU SERIES TO - 252AA( D - PAK ) STD SERIES TO - 251 ( I - PAK ) ABSOLUTE MAXIMUM RATINGS ( T C=25 °C unless otherwise noted ) Symbol VDS VGS ID IDM PD TJ, TSTG Parameter Drain-Source Voltage Gate-Source Voltage Drain Current-Continuous -Pulsed b a d Limit 100 ±20 TC=25°C TC=70°C TC=25°C TC=70°C 2 1.6 5.8 42 27 -55 to 150 Units V V A A A W W °C Maximum Power Dissipation Operating Junction and Storage Temperature Range THERMAL C [ ... ]

STU03L01 PDF Datasheet Download