EIA - Electronic Industries Alliance
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| EIA-359-A |
| EIA Standard Colors for Color Identification and Coding |
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EIA-359-A - EIA Standard Colors for Color Identification and Coding
General
This is a color coding standard. It defines the color ranges used to identify electronic components, equipment, and wire and cable insulation, and establishes a standard color-number relationship. Materials to be color coded are separated into two categories, and nominal colors and tolerance ranges are established for each. Both categories have the same nominal colors, but the tolerance ranges are different, so that the tighter tolerances fall wholly within the more liberal tolerance ranges. Tests for conformance may 'be instrumental or visual. . For instrumental testing, categories of test instruments are specified. For visual testing, specialized color charts are Specified, and these are available as an adjunct to the standard.
Scope
The colors defined in this standard are intended to be applied to the marking of electronic components such as resistors, capacitors, and wires in a manner described in the EIA Standards for these components. In addition, the use of these colors is recommended for identification of terminals and circuit functions, and any other application where the relation of color to numbers or functions is felt necessary. The object is to reduce errors or misunderstandings which may result from improper selection or interpretation of colors.
References
- ASTM Method D 1-535, Standard Method of Speclfying Color by the Munsell System.
- ASTM Method .E 308, Standard Practice for Spectrophotometry and Description of Color in the CIE 1931 System.
- From ANSI Y1.l - 1972, Abbreviations for Use on Drawings: and in Text.
- From ANSI Y14.15 - 1966 (R1973). Electrical and Electronic Diagrams
- ASTM Method D 1729, Standard Method for Visual Evaluation of Color Differences of Opaque Materials.