Knowledge sharing | quality level and relevant standards of components

Date：2021-12-10 15:00:00Views：1819

Quality is the life of an enterprise. Electronic components are the basis of enterprise products. Without highly reliable components, it is impossible to produce "high, precision and sharp" products. The quality and reliability of electronic components is related to the reputation and development of a high-tech enterprise. Therefore, any high-tech enterprise must attach great importance to the quality and system of purchased electronic components, and take practical measures to improve the quality and reliability of purchased products.

The 7905 technical agreement of the "seven specialties" formulated in the late 1970s and the 8406 technical conditions of the "seven specialties" formulated in the early 1980s (hereinafter referred to as the "seven specialties" conditions). The "seven specialties" technical conditions are the basis for establishing the standards of military industrial components. At present, the components controlled according to the "seven specialties" conditions or their stricter conditions are still the main varieties used by aerospace and other departments. (Note: "seven specialties" refer to special personnel, special aircraft, special materials, special approval, special inspection, special technology and special card) according to the development trend, the conditions of "seven specialties" will gradually transition to the military industry standard of components.

Since the beginning of military industry in 1980, China's military industrial standardization organization has established GJB system with reference to the military industrial standard (MIL) system. The standards of components and parts include specifications, standards and military technical documents:

a．standard- it mainly includes: General specifications and detailed specifications of components, which are collectively referred to as product specifications.

b．standard- mainly include: Test and measurement standards, quality assurance program and production line certification standards, component materials and parts standards, model naming standards, text and graphic symbol standards, etc;

c．Guide military technical documents- mainly include: Guide for correct selection and use of components, manual for reliable military prediction of electronic equipment, component series spectrum, etc.

1、 Component specifications mainly include:

There are two levels: General specification (General specification) and detailed specification of components. The general specification specifies the requirements for the quality control of a certain type of components. The detailed specification is the specific military capability and quality control requirements for one or a series of models of a certain type of components. The general specification must be used together with the detailed specification. The product specification of components is one of the basis for component production line certification and component identification, and it is also the main basis for users to select and purchase components.

At present, China's competent department of national defense industry has issued a large number of general specifications for components, but the detailed specifications are not fully matched. Therefore, the device manufacturers often formulate detailed specifications (belonging to the enterprise military standard level) and implement them after being confirmed by the standardization organization.

2、 Standard is another form of military industry standard system in addition to standardizing and guiding military industry technical documents.

It covers a wide range of categories. For the users of components, it is first necessary to understand the standards of relevant test and measurement methods. Because such standards are important technical support for specifications, understanding the contents of such standards in combination with product specifications, on the one hand, helps to better understand the ability of components to withstand various stresses, on the other hand, provides a reference basis for the user of components to correctly formulate standards or regulations for supplementary screening (secondary screening) or failure analysis, and military documents.

Test method standard is a strong technical and military standard to guide the test, measurement or analysis of a certain type of components. The number of such standards is small, but it plays a great role in ensuring the quality of components.

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