This part is a kind of semiconductor called K3525-01MR.

Function of this product has 2SK3525-01MR.

Manufacturers : Fuji Electric

Image and pinout :

Some of the text within the PDF file :

2SK3525-01MR Super FAP-G Series Features High speed switching Low on-resistance No secondary breadown Low driving power Avalanche-proof FUJI POWER MOSFET N-CHANNEL SILICON POWER MOSFET Outline Drawings TO-220F Applications Switching regulators UPS (Uninterruptible Power Supply) DC-DC converters Maximum ratings and characteristicAbsolute maximum ratings (Tc=25°C unless otherwise specified) Symbol Ratings Unit V 600 V DS A ID ±6 A ±24 ID(puls] V ±30 VGS A IAR *2 6 mJ EAS *1 193 kV/µs 20 dVDS/dt *4 *3 5 dV/dt kV/µs 2.16 PD Ta=25°C W Tc=25°C 58 Operating and storage Tch +150 °C -55 to +150 temperature range Tstg °C *1 L=9.83mH, Vcc=60V *2 Tch < = BV DSS, Tch < = 150°C = -ID, -di/dt=50A/µs, Vcc < =150°C *3 IF< *4 VDS < = 600V Item Drain-source voltage Continuous drain current Pu [ ... ]

K3525-01MR PDF Datasheet Download