This part is a kind of semiconductor called 25N60N.
Function of this product has FCH25N60N.
Manufacturers : Fairchild Semiconductor
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Some of the text within the PDF file :
FCH25N60N N-Channel SupreMOS® MOSFET December 2013 FCH25N60N N-Channel SupreMOS® MOSFET 600 V, 25 A, 126 mΩ Features • RDS(on) = 108 mΩ (Typ.) @ VGS = 10 V, ID = 12.5 A • Ultra Low Gate Charge (Typ. Qg = 57 nC) • Low Effective Output Capacitance (Typ. Coss(eff.) = 262 pF) • 100% Avalanche Tested • RoHS Compliant Description The SupreMOS® MOSFET is Fairchild Semiconductor’s next generation of high voltage super-junction (SJ) technology employing a deep trench filling process that differentiates it from the conventional SJ MOSFETs. This advanced technology and precise process control provides lowest Rsp on-resistance, superior switching performance and ruggedness. SupreMOS MOSFET is suitable for high frequency switching power converter applications such as PFC, server [ ... ]
25N60N PDF Datasheet Download
