This part is a kind of semiconductor called JCS640C-O-C-N-B.

Function of this product has N-CHANNEL MOSFET.

Manufacturers : JILIN SINO-MICROELECTRONICS

Image and pinout :

Some of the text within the PDF file :

R N 沟道增强型场效应晶体管 N-CHANNEL MOSFET JCS640 主要参数 MAIN CHARACTERISTICS 封装 Package ID VDSS Rdson （@Vgs=10V） Qg 用途 z 高频开关电源 z 电子镇流器 z UPS 电源 18.0 A 200 V 0.18Ω 47 nC APPLICATIONS z High efficiency switch mode power supplies z Electronic lamp ballasts based on half bridge z UPS FEATURES z Low gate charge z Low Crss (typical 48pF ) z Fast switching z 100% avalanche tested z Improved dv/dt capability z RoHS product 产品特性 z 低栅极电荷 z 低 Crss (典型值 48pF) z 开关速度快 z 产品全部经过雪崩测试 z 高抗 dv/dt 能力 z RoHS 产品 订货信息 ORDER MESSAGE 订 货 型 号 Order codes JCS640C-O-C-N-B JCS640F-O-F-N-B 印 记 封 装 否 否 无卤素 Halogen Free NO NO 包 装 器件重量 Device [ ... ]

JCS640C-O-C-N-B PDF Datasheet Download