Home / Standards / GB/T 42902-2023 GB/T 42902-2023 Active Test method for surface defects on silicon carbide epitaxial wafers—Laser scattering method 碳化硅外延片表面缺陷的测试 激光散射法 Standard Type GBT ICS 77.040 CCS H21 Status 现行 Issue Date 2023-08-06 Implementation 2024-03-01 Responsible Dept 国家标准委 Drafting Unit N/A