GB/T 6621-1995 Replaced National standards

GB/T 6621-1995 Test methods for surface flatness of silicon polished slices

Publish Date: 1995-04-18 Implement Date: 1995-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 6621-1995

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: \nTest methods for the physical properties of metals

ICS Name: Semiconductor materials

Publish Date: 1995-04-18

Implement Date: 1995-12-01

Pages: 12 pages

Development Information

Word Count: 21 Thousand words Pages: 12 pages

Replace the following standards

GB 6621-1986

Superseded by the following standards

GB/T 6621-2009 Testing methods for surface flatness of silicon slices

Adopt standards

ASTM F775-1988

Related Standards

GB/T 11093-1989 Replaced

GB/T 11093-1989 Liquid encapsulated czochralski-grown gallium arsenide single crystals and As-cut slices

Publish Date: 1989-03-31

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

Publish Date: 1992-02-19

GB/T 13389-1992 Replaced

GB/T 13389-1992 Practice for conversion between resistivity and dopant density for boron-doped and phosphorus-doped silicon

Publish Date: 1992-02-19

GB/T 13843-1992 Abolished

GB/T 13843-1992 Polished monocrystalline sapphire substrates

Publish Date: 1992-12-28

GB/T 14015-1992 Active

GB/T 14015-1992 Silicon on sapphire epitaxial wafers

Publish Date: 1992-12-28

GB/T 14139-1993 Replaced

GB/T 14139-1993 Silicon epitaxial wafers

Publish Date: 1993-02-06