1. According to the GJB standard, the safety color grades of components are divided into five grades, which are red, yellow, blue, white and green. Among them, red color indicates the highest safety grade and green color indicates the lowest safety grade. Specifically, red grade components are usually used in extremely demanding military equipment and high-end industrial products, such as missiles, airplanes, etc.; yellow grade components are suitable for civil equipment with high safety requirements, such as medical equipment, nuclear power plants, etc.; blue grade components are suitable for civil equipment with general safety requirements, such as televisions, computers, etc.; white grade components are suitable for products with low safety requirements, such as household appliances, etc.; green grade components are suitable for products with low safety requirements, such as household appliances, etc.; green color components are suitable for products with high safety requirements, such as medical equipment, nuclear power stations, etc. The blue grade components are suitable for the general safety requirements of civilian equipment, such as television sets, computers, etc. The white grade components are suitable for the lower safety requirements of products, such as household appliances, etc. The green grade components are usually only applicable to some low-end products, such as toys.
2. According to another possible classification standard, the color grade of electronic components is divided into four levels: red, orange, yellow and blue. Among them, blue is the lowest level and red is the highest. Different levels correspond to different safety requirements and use environments, with the following meanings:
- Blue level: the lowest safety level, generally used for low frequency circuits and low risk devices.
- Yellow level: slightly higher than the blue level, generally used for civil and industrial equipment.
- Orange level: Higher than the yellow level, generally used for military products and aerospace equipment.
- Red level: the highest security level, generally used for the most sensitive military equipment and critical systems.
It should be noted that different standards may have different color levels and corresponding meanings, and the actual standard used should prevail.