This part is a kind of semiconductor called BC847.
Function of this product has Silicon NPN transistor.
Manufacturers : BLUE ROCKET ELECTRONICS
Image and pinout :

Some of the text within the PDF file :
BC847 Rev.E Jul.-2016 DATA SHEET 描述 / Descriptions SOT-23 塑封封装 NPN 半导体三极管。Silicon NPN transistor in a SOT-23 Plastic Package. 特征 / Features 高电压,与 BC857 互补。 High voltage, complementary pair with BC857. 用途 / Applications 用于一般开关放大及转换。 General purpose application and switching application. 内部等效电路 / Equivalent Circuit 引脚排列 / Pinning 3 2 1 PIN1:Emitter PIN 2:Base PIN 3:Collector 放大及印章代码 / hFE Classifications & Marking hFE Classifications Symbol hFE Range A 110~220 B 200~450 Marking H1E H1F C 420~800 H1G http://www.fsbrec.com 1/6 BC847 Rev.E Jul.-2016 DATA SHEET 极限参数 / Absolute Maximum Ratings(Ta=25℃) 参数 Parameter Collector to Base Voltage Col [ ... ]
BC847 PDF Datasheet Download
