This part is a kind of semiconductor called IRFS640.

Function of this product has N-CHANNEL MOSFET.

Manufacturers : LZG

Image and pinout :

Some of the text within the PDF file :

IRFS640(CS640F) N-Channel MOSFET/N 沟 MOS 晶体管 用途:用于高效 DC/DC 转换和功率开关。 Purpose: These devices are well suited for high efficiency switching DC/DC converters and switch mode power supplies. 特点: 低栅电荷,低反馈电容,开关速度快。 Features: Low gate charge, low crss, fast switching. 极限参数/Absolute maximum ratings(Ta=25℃) 参数符号 数值 单位 Symbol Rating Unit VDSS 200 V ID(Tc=25℃) 18 A ID(Tc=100℃) 11.4 A IDM 72 A VGSS ±30 V EAS 250 mJ EAR 13.9 mJ IAR 18 A PD(Tc=25℃) 43 W TJ,TSTG -55 to 150 ℃ 电性能参数/Electrical Characteristics(Ta=25℃) 参数符号 测试条件 Symbol Test Conditions BVDSS VGS=0V ID=250μA IDSS VDS=200V VDS=160V VGS=0V TC=125℃ IGSS VGS=±30V VDS=0V VGS [ ... ]

IRFS640 PDF Datasheet Download