This part is a kind of semiconductor called 2N03L05.
Function of this product has Power-Transistor.
Manufacturers : Infineon Technologies
Image and pinout :
Some of the text within the PDF file :
OptiMOS® Power-Transistor Feature • N-Channel • Enhancement mode • Logic Level • Excellent Gate Charge x RDS(on) product (FOM) • Superior thermal resistance • 175°C operating temperature • Avalanche rated • dv/dt rated P- TO262 -3-1 SPI80N03S2L-05 SPP80N03S2L-05,SPB80N03S2L-05 Product Summary VDS RDS(on) ID 30 V 5.2 mΩ 80 A P- TO263 -3-2 P- TO220 -3-1 Type SPP80N03S2L-05 SPB80N03S2L-05 SPI80N03S2L-05 Package P- TO220 -3-1 P- TO263 -3-2 P- TO262 -3-1 Ordering Code Q67042-S4033 Q67042-S4032 Q67042-S4093 Marking 2N03L05 2N03L05 2N03L05 Maximum Ratings, at Tj = 25 °C, unless otherwise specified Parameter Symbol Continuous drain current 1) TC=25°C ID Pulsed drain current TC=25°C Avalanche energy, single pulse ID=80 A , VDD=25V, RGS=25Ω Repetitive avalan [ ... ]