This part is a kind of semiconductor called C5147.

Function of this product has Silicon NPN transistor.

Manufacturers : BLUE ROCKET ELECTRONICS

Image and pinout :

Some of the text within the PDF file :

2SC5147(BR3DA5147F) Rev.C Feb.-2015 DATA SHEET 描述 / Descriptions TO-220F 塑封封装 NPN 半导体三极管。Silicon NPN transistor in a TO-220F Plastic Package. 特征 / Features 击穿电压高，集电极输出电容小，安全工作区宽。 High breakdown voltage, low collector output capacitance, wide SOA. 用途 / Applications 用于彩电色度信号输出及视频信号放大。 Ideal for Color TV chroma output and amplification of video signals. 内部等效电路 / Equivalent Circuit 引脚排列 / Pinning 1 23 PIN1：Base PIN 2：Collector PIN 3：Emitter 放大及印章代码 / hFE Classifications & Marking hFE Classifications Symbol hFE Range D 60～120 E 100～200 http://www.fsbrec.com 1/6 2SC5147(BR3DA5147F) Rev.C Feb.-2015 DATA SHEET 极限参数 / A [ ... ]

C5147 PDF Datasheet Download