GB/T 39771.2-2021
半导体发光二极管光辐射安全 第2部分:测试方法
Optical radiation safety of LEDs—Part 2: Measurement methods
- 实施日期
- 2021-10-01
- ICS 分类
- 31.260
组合使用关键词、标准类型、状态与 ICS 分类,快速定位所需国家标准。
找到 1,403 条
GB/T 39771.2-2021
Optical radiation safety of LEDs—Part 2: Measurement methods
GB/T 39771.1-2021
Optical radiation safety of LEDs—Part 1: Safety requirements and classification
GB/T 7092-2021
Outline dimensions of semiconductor integrated circuits
GB/T 5095.2507-2021
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 25-7: Test 25g: Impedance, reflection coefficient, and voltage standing wave ratio (VSWR)
GB/T 5095.2505-2021
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 25-5:Test 25e: Return loss
GB/T 5095.2504-2021
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 25-4: Test 25d: Propagation delay
GB/T 5095.2503-2021
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 25-3: Test 25c: Rise time degradation
GB/T 5095.2502-2021
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 25-2: Test 25b: Attenuation (insertion loss)
GB/T 5095.2501-2021
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 25-1: Test 25a: Crosstalk ratio
GB/T 5095.2307-2021
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 23-7: Screening and filtering tests—Test 23g: Effective transfer impedance of connectors
GB/T 5095.2304-2021
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 23-4: Screening and filtering tests—Test 23d: Transmission line reflections in the time domain
GB/T 5095.2303-2021
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 23-3:Screening and filtering tests—Test 23c:Shielding effectiveness of connectors and accessories—Line injection method
GB/T 39560.1-2020
Determination of certain substances in electrical and electronic products—Part 1: Introduction and overview
GB/T 39560.701-2020
Determination of certain substances in electrical and electronic products—Part 7-1:Hexavalent chromium—Presence of hexavalent chromium [Cr(VI)] in colourless and coloured corrosion-protected coatings on metals by the colorimetric method
GB/T 39560.2-2020
Determination of certain substances in electrical and electronic products—Part 2: Disassembly,disjointment and mechanical sample preparation
GB/T 20995-2020
Static var compensators(SVC)—Testing of thyristor valves
GB/T 39560.301-2020
Determination of certain substances in electrical and electronic products—Part 3-1: Screening lead, mercury, cadmium, total chromium and total bromine by X-ray fluorescence spectrometry
GB/T 39560.6-2020
Determination of certain substances in electrical and electronic products—Part 6: Polybrominated biphenyls and polybrominated diphenyl ethers in polymers by gas chromatography-mass spectrometry(GC-MS)
GB/T 19520.19-2020
Mechanical structures for electronic equipment—Dimensions of mechanical structures of the 482.6 mm (19 in) series—Part 3-107: Dimensions of subracks and plug-in units, small form factor
GB/T 18663.3-2020
Mechanical structures for electronic equipment—Tests for metric and inch system—Part 3: Electromagnetic shielding performance tests for cabinets and subracks