Localized substitution
　　1. Why localization is needed
　　Electronic components are the basic units of high-end equipment such as aerospace, so the reliability of electronic components is the basis for ensuring the reliability of aerospace equipment. At present, there are still many domestic aerospace equipment that use imported electronic components. The use of these imported components mainly has the following problems.

　　1. There is no guarantee for development and production

　　At present, the replacement cycle of electronic components is getting shorter and shorter. Take the integrated circuit as an example. According to Moore's Law, its size is reduced by half every 18 months, and its integration is doubled. Due to the faster and faster upgrading of components and the suspension of production of components caused by the merger and reorganization of foreign manufacturers, many high-end aerospace and aerospace equipment that have been in service and are still in production have brought a great deal difficult.

　　In addition, Western countries led by the United States have formed an alliance and have long imposed strict export restrictions on my country. Taking the United States as an example, it has formulated strict policies and related measures to restrict the export of high-tech and products. The US Department of Commerce has formulated the Commerce Control List (CCL), which prohibits the export of electronic components in the list to relevant countries and regions. This kind of embargo policy for electronic components also has a greater impact on the development and production of high-performance aerospace equipment in my country.

　　2. Information security risks
　　Due to the technological advancement of Western countries and conflicts of interest between countries, imported electronic components may be artificially implanted in the backdoor during design, manufacturing, packaging, testing, etc., such as IP cores may be embedded in the backdoor, mask plate making, and high-end packaging. Backdoor can be implanted. These backdoors can steal the data of our country's equipment or even destroy the equipment, and may further spread viruses and Trojan horses through the network, seriously affecting our country's information security. For example, in 2008, a generator control system of the National Security Agency was attacked and caused physical damage. In 2010, Germany discovered the first destructive virus specifically targeting industrial control system chips. It can be seen that in the construction of national defense and information security, if the autonomous control of electronic components cannot be realized, it will always be in a situation of being restrained and passively beaten.

　　3. Equipment quality risk
　　Due to various objective factors, some industrial-grade components are used in aerospace equipment. Most of these industrial-grade components are purchased through agents, and relevant quality certification documents cannot be obtained. Some components have been discontinued or even refurbished. At the same time, some large-scale integrated circuits have no corresponding testing methods in China. Therefore, the performance parameters and reliability levels of some imported electronic components can only be tested with the equipment, and the detection and screening work cannot be carried out in advance, resulting in abnormal parameters and early failures during the use of the equipment. The quality risks of imported electronic components have severely affected the development, production, and use of aerospace equipment.

　　2. Problems in the localized substitution of components
　　Due to the difficulty of guaranteeing the use of imported electronic components in aerospace equipment, and many problems in terms of safety hazards, quality risks, etc., vigorously promoting the localization of imported electronic components has become a task of building national information security and safeguarding national independence. The urgent and arduous task of diplomatic capabilities. Although my country has increased investment in the localized substitution of components and made great progress, there are still some problems in the localized substitution of components due to the different implementation efforts of various units in the localized substitution of components.

　　1. Lack of systematic guidance documents
　　Due to the imperfect top-level management documents, there is currently no domestic guidance document regulating the development, production, identification and application verification of domestically developed electronic components, and it is impossible to effectively control and supervise the localized substitution of components. At the same time, although some equipment R&D units have formulated their own internal component substitution system, due to factors such as design, technology, and processing, localized substitution verification can only be carried out in conjunction with the actual modules and the whole machine, and it is difficult to fully verify the components. The performance of the device.

　　2. Incomplete parameter system
　　The production of electronic components in my country started late, and in the early stage, it was mainly imitation of imported electronic components. Restricted by various objective conditions and the intellectual property protection of imported electronic components, imitation components cannot guarantee that the design, materials, and processes are completely consistent with imported components. In addition, due to incomplete parameter system and incomplete performance index test coverage, qualified components are tested. The device may still have unexcited defects.

　　3. There is a problem with the process design
　　In order to meet the demand for miniaturization, domestic aerospace equipment has selected some imported surface mount electronic components. Due to the differences in the process of the package and the case, the corresponding localized replacement components may have the problem that the package is not fully compatible. Moreover, considering the development schedule and technical risks, the whole machine unit mostly chooses in-situ replacement localized solutions, and the application verification tests are mostly performance, process and environmental adaptability verification, and it is difficult to expose the problems caused by pin or process mismatch. . For example, for a domestic A/D converter, the pin spacing is slightly different from that of imported products, and the package is not fully compatible, and it is easy to be soldered after long-term use.

　　3. Domestic integrated solutions
　　Because we deeply recognize the importance of localized substitution of components, in order to better cope with the complex international situation, we will realize diversified solutions in the supply chain based on the principle of independent and controllable components. Domestically compatible product solutions through imported components and optimized unified services. Achieve component-level independent controllability, help the national industry upgrade, and ensure the sustained and healthy development of the national electronics industry.

　　The program content is as follows:
　　The plan includes the domestically-made compatible product plan with imported components for the product and the optimized unified type.

　　Based on database support, through combing the list of product components, recommending domestic compatible products for the included imported components, optimizing components from mainstream domestic manufacturers, and increasing the rate of product localization.

　　For the imported components contained in the product that do not have domestic compatible products, recommendations are made based on the related requirements of optimization and integration. The components of mainstream foreign manufacturers are selected. Through the integration and compression of component varieties, the localization rate is further increased and the use of non-use is reduced. Mainstream components and guarantee the risks caused by difficulties.