This part is a kind of semiconductor called BC856.
Function of this product has Silicon PNP transistor.
Manufacturers : BLUE ROCKET ELECTRONICS
Image and pinout :

Some of the text within the PDF file :
BC856 Rev.E Mar.-2016 DATA SHEET 描述 / Descriptions SOT-23 塑封封装 PNP 半导体三极管。Silicon PNP transistor in a SOT-23 Plastic Package. 特征 / Features 低电流,低电压,小封装。 Low current ,Low voltage ,S-mini package. 用途 / Applications 用于一般放大 General power amplifier 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 125~250 B 220~475 Marking H3A H3B http://www.fsbrec.com 1/6 BC856 Rev.E Mar.-2016 极限参数 / Absolute Maximum Ratings(Ta=25℃) 参数 Parameter Collector to Base Voltage Collector to Emitter Voltage Emitter to Base Voltage Collector [ ... ]
BC856 PDF Datasheet Download
