This part is a kind of semiconductor called KF16N25D.

Function of this product has N CHANNEL MOS FIELD EFFECT TRANSISTOR.

Manufacturers : KEC

Image and pinout :

Some of the text within the PDF file :

SEMICONDUCTOR TECHNICAL DATA KF16N25D N CHANNEL MOS FIELD EFFECT TRANSISTOR General Description This planar stripe MOSFET has better characteristics, such as fast switching time, low on resistance, low gate charge and excellent avalanche characteristics. It is mainly suitable for DC/DC Converters and switching mode power supplies. FEATURES VDSS= 250V, ID= 13A Drain-Source ON Resistance : RDS(ON)=0.24 Qg(typ) = 21nC @VGS = 10V MAXIMUM RATING (Ta=25 ) CHARACTERISTIC SYMBOL RATING Drain-Source Voltage Gate-Source Voltage VDSS VGSS 250 30 @TC=25 Drain Current @TC=100 Pulsed (Note1) Single Pulsed Avalanche Energy (Note 2) Repetitive Avalanche Energy (Note 1) Peak Diode Recovery dv/dt (Note 3) Drain Power Dissipation Tc=25 Derate above 25 ID IDP EAS EAR dv/dt PD 13 8.1 39* 20 [ ... ]

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