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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Detail specification for electronic components high-frequency amplification transistor for silicon NPN ambient-rated for type 3DG 2636
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic components high-frequency amplification transistor for silicon NPN ambient-rated for type 3DG3077
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic components low-frequency amplification transistor for silicon NPN case-rated for type 3DD204
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic components low-frequency amplification transistor for silicon NPN case-rated for type 3DD207
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic components low-frequency amplification transistor for silicon NPN case-rated for type 3DD207
WITHDRAWN published on 1.1.1988
Selected format:(Detailed specifications of electronic components. 3DD325 silicon NPN. Environmental rated low frequency amplifying transistor (for certification))
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic components--Ambie-nt-rated transistor for type 3DG1815 silicon NPN for high frequency amplification
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic component--Silicon single phase bridge rectifier type for QL 62
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic component--Silicon switching diodes for types 2CK111 2CK112 and 2CK113
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic component--Silicon switching diodes for types 2CK111 2CK112 and 2CK113
WITHDRAWN published on 1.1.1988
Selected format:Latest update: 2026-03-11 (Number of items: 2 266 192)
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