This part is a kind of semiconductor called BLD123DL.
Function of this product has TRANSISTORS.
Manufacturers : SI Semiconductors
Image and pinout :

Some of the text within the PDF file :
深圳深爱半导体股份有限公司 Shenzhen SI Semiconductors Co., LTD. 产品规格书 Product Specification NPN 低压系列晶体管/ L SERIES TRANSISTORS BLD123DL ●特点: 耐压高 开关速度快 安全工作区宽 符合 RoHS 规范 ■ ■ ■ ■●FEATURES: HIGH VOLTAGE CAPABILITY HIGH SPEED SWITCHING WIDE SOA RoHS COMPLIANT ●应用: 适用于 110V 电路 节能灯 电子镇流器 ■ ■●APPLICATION: SUITABLE FOR 110V CIRCUIT MODE FLUORESCENT LAMP ELECTRONIC BALLAST ●最大额定值(Tc=25°C) ●Absolute Maximum Ratings(Tc=25°C) TO-92/92S/126/126S 参数 PARAMETER 符号 SYMBOL 额定值 VALUE 单位 UNIT 集电极-基极电压 Collector-Base Voltage VCBO 400 V 集电极-发射极电压 Collector-Emitter Voltage VCEO 200 V 发射极- [ ... ]
BLD123DL PDF Datasheet Download
