GB/T 11093-1989
Replaced
GB/T 34479-2017
Active
National standards
GB/T 34479-2017 Specification for alphanumeric marking of silicon wafers
GB/T 34479-2017 Specification for alphanumeric marking of silicon wafers
Basic Information
Standard Code:
GB/T 34479-2017
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Semi-metals and semiconductor materials
ICS Name:
Semiconductor materials
Publish Date:
2017-10-14
Implement Date:
2018-07-01
Pages:
12 pages
Scope
This standard specifies the coding specifications for alphanumeric markings on silicon wafers or other semiconductor chips, including the shape and size of the markings, the definition of alphanumeric codes, requirements, and methods for checking alphanumeric errors. This standard applies to coding markings on the front or back of silicon wafers and other chips. Note: The alphanumeric markings and associated information are stored in a database and can be easily and quickly identified by an automatic optical character reader (OCR) device or manually, ensuring consistency in chip marking by chip manufacturers.
Development Information
Referenced Standards
Related Standards
GB/T 13388-1992
Replaced
GB/T 13388-1992 Method for measuring crystallographic orientation of flats on single crystal silicon slices and wafers by X-ray techniques
GB/T 13389-1992
Replaced
GB/T 13389-1992 Practice for conversion between resistivity and dopant density for boron-doped and phosphorus-doped silicon
GB/T 13843-1992
Abolished
GB/T 13843-1992 Polished monocrystalline sapphire substrates
GB/T 14015-1992
Active
GB/T 14015-1992 Silicon on sapphire epitaxial wafers
GB/T 14139-1993
Replaced