This part is a kind of semiconductor called MBR4060AB.

Function of this product has SCHOTTKY BARRIER DIODE.

Manufacturers : Jilin Sino

Image and pinout :

Some of the text within the PDF file :

肖特基势垒二极管 R SCHOTTKY BARRIER DIODE MBR4060 主要参数 MAIN CHARACTERISTICS 封装 Package IF(AV) VRRM Tj VF(max) 40（2×20）A 60 V 150 ℃ 0.65V （@Tj=125℃） 用途  高频开关电源  低压续流电路和保护电 路 APPLICATIONS  High frequency switch power supply  Free wheeling diodes, polarity protection applications 产品特性 共阴结构 低功耗，高效率 良好的高温特性 有过压保护环，高可靠性 环保（RoHS）产品 FEATURES Common cathode structure Low power loss, high efficiency High Operating Junction Temperature Guard ring for overvoltage protection，High reliability RoHS product 订货信息 ORDER MESSAGE 订货型号 印记 封装 Order codes Marking Package MBR4060Z MBR4 [ ... ]

MBR4060AB PDF Datasheet Download