SJ电子行业标准 SJ 20174-1992 半导体分立器件3DK2221、3DK2221A、3DK2222、3DK2222A型NPN硅小功率开关晶体管详细规范 SJ 20174-1992.Semiconductor discrete device Detail specification for NPN silicon low-power switching... 01月19日SJ 20174 阅读全文