Home / Standards / GB/T 249-1989 GB/T 249-1989 Abolished The rule of type designation for discrete semiconductor devices 半导体分立器件型号命名方法 Standard Type GBT ICS 31.080 CCS L40 Status 废止 Issue Date 1989-03-18 Implementation 1990-04-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A