This part is a kind of semiconductor called IRF9640.

Function of this product has Power MOSFET.

Manufacturers : Vishay

Image and pinout :

Some of the text within the PDF file :

IRF9640, SiHF9640 Vishay Siliconix Power MOSFET PRODUCT SUMMARY VDS (V) RDS(on) (Ω) Qg (Max.) (nC) Qgs (nC) Qgd (nC) Configuration VGS = - 10 V 44 7.1 27 Single S FEATURES - 200 0.50 • Dynamic dV/dt Rating • Repetitive Avalanche Rated • P-Channel •F ast Switching • Ease of Paralleling • Simple Drive Requirements • Compliant to RoHS Directive 2002/95/EC Available RoHS* COMPLIANT TO-220AB G DESCRIPTION Third generation Power MOSFETs from Vishay provide the designer with the best combi nation of fast swi tching, ruggedized device des ign, low on -resistance a nd cost-effectiveness. The TO-220AB package is univers ally preferred for all commercial-industrial app lications at powe r dissipation levels to approximately 50 W. The low thermal resistance and low package c ost [ ... ]

IRF9640 PDF Datasheet Download