This part is a kind of semiconductor called C5027S.
Function of this product has Plastic-Encapsulate Transistors.
Manufacturers : ATE
Image and pinout :
Some of the text within the PDF file :
先进科技电子有限公司 Advanced CO.,LTD. Technology Electronics TO-126 Plastic-Encapsulate Transistors www.DataSheet4U.com ATE 先进科技电子有限公司 Advanced CO.,LTD. Technology Electronics 1/2 先进科技电子有限公司 Advanced CO.,LTD. Technology Electronics www.DataSheet4U.com ATE 先进科技电子有限公司 Advanced CO.,LTD. Technology Electronics 2/2 [ ... ]