This part is a kind of semiconductor called MUR1640.

Function of this product has (MUR1610 - MUR1660) Plastic Ultra-Fast Recover Rectifier.

Manufacturers : SIYU

Image and pinout :

Some of the text within the PDF file :

SIYU R 塑封超快速整流二极管 反向电压 100---600V 正向电流 16A TO-220AC .420(10.67) .380(9.65) .189(4.8) .138(3.5) .054(1.4) .045(1.14) MUR1610 .. MUR1660 Plastic Ultra-Fast Recover Rectifier Reverse Voltage 100 to 600 V Forward Current 16 A 特征 Features ·大电流承受能力。High Current Capability ·正向压降低。Low Forward Voltage Drop ·低功耗高效率。Low Power Loss，High Efficiency ·引线和管体皆符合RoHS标准 。 Lead and body according with RoHS standard .138(3.5) MAX .025(0.65) MAX .500(12.70) MIN .270(6.86) .230(5.84) Φ.138(3.5) Φ.118(3.0) .625(15.88) .560(14.22) 1 2 机械数据 Mechanical Data ·封装: 塑料封装 Case: Molded Plastic ·极性: 标记模压或印于本体 Polarity: Symbols molded or marked on body ·安装 [ ... ]

MUR1640 PDF Datasheet Download