3DD1555硅NPN型高反压大功率晶体管主要用作21英寸彩电行输出该产品采用台面结构-NPN silicon 3DD1555 high anti-pressure high-power transistors is mainly for 21-inch color TV output of the product line using the table structure

3DD1556硅NPN型高反压大功率晶体管主要用作21英寸彩电行输出该产品采用台面结构-NPN silicon 3DD1556 high anti-pressure high-power transistors is mainly for 21-inch color TV output of the product line using the table structure