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GB/T 34479-2017 Active
GB/T 34479-2017 Specification for alphanumeric marking of silicon wafers
Abstract
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.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 34479-2017 |
| CCS | Semi-metals and semiconductor materials |
| ICS | Semiconductor materials |
| Implement Date | 2018-07-01 |
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