This part is a kind of semiconductor called BT169D.

Function of this product has Sensitive Gate SCRs.

Manufacturers : JILIN SINO

Image and pinout :

Some of the text within the PDF file :

门极灵敏触发型晶闸管 R Sensitive Gate SCRs BT169D 主要参数 MAIN CHARACTERISTICS 封装 Package IT(RMS) VDRM/VRRM IGT 0.8A 600V 200μA 用途  半交流开关  相位控制 APPLICATIONS  Half AC switching  Phase control 序号 Pin 1 2 3 引线名称 Description 阴极 K 门极 G 阳极 A TO-92 产品特性  玻璃钝化芯片，高可靠性和一致性  低通态电流和高浪涌电流能力  环保 RoHS 产品 FEATURES  Glass-passivated mesa chip for reliability and uniform  Low on-state voltage and High ITSM  RoHS products SOT-89 订货信息 ORDER MESSAGE 订货型号 Order codes BT169D-O-T-N-C BT169D-O-T-B-A BT169D-O-O-N-A 印记 Marking 3CT06B 3CT06B 3CT06B 无卤素 Halogen Free 含卤 含卤 含卤 封装 Package TO-9 [ ... ]

BT169D PDF Datasheet Download