Home / Standards / GB/T 1550-2018 GB/T 1550-2018 Active Test methods for conductivity type of extrinsic semiconducting materials 非本征半导体材料导电类型测试方法 Standard Type GBT ICS 77.040 CCS H21 Status 现行 Issue Date 2018-12-28 Implementation 2019-11-01 Responsible Dept 国家标准委 Drafting Unit N/A