This part is a kind of semiconductor called 09N05.

Function of this product has SPD09N05.

Manufacturers : Infineon

Image and pinout :

Some of the text within the PDF file :

SPD 09N05 SIPMOS® Power Transistor Features • N channel • Product Summary Drain source voltage Drain-Source on-state resistance Continuous drain current VDS RDS(on) ID 55 0.1 9.2 V Ω A Enhancement mode rated • Avalanche rated • dv/dt • 175˚C operating temperature Type SPD09N05 SPU09N05 Package P-TO252 P-TO251 Ordering Code Q67040-S4136 Packaging Tape and Reel Pin 1 G Pin 2 D Pin 3 S Q67040-S4130-A2 Tube MaximumRatings , at Tj = 25 ˚C, unless otherwise specified Parameter Symbol Continuous drain current Value 9.2 6.5 37 35 2.4 6 ±20 24 -55... +175 55/175/56 Unit A ID TC = 25 ˚C TC = 100 ˚C Pulsed drain current IDpulse EAS EAR dv/dt TC = 25 ˚C Avalanche energy, single pulse mJ ID = 9.2 A, VDD = 25 V, RGS = 25 Ω Avalanche energy [ ... ]

09N05 PDF Datasheet Download