What is AEC-Q200 (passive component reliability test standard)?

What are AEC standards?

Automotive Electronics Council or AEC was set up in the 1990s by three leading automobile manufacturers in the United States and joined by major electronic component manufacturers. The organization is responsible for setting common standards for in-vehicle electronic components including quality standards. Its AEC Component Technical Committee is working on setting standards for reliable electronic components and component certification rules.

AEC standards are international standards for ensuring the reliability of in-vehicle electronic components. Automobile manufacturers will not purchase components that fail to meet the requirements defined in the standards. AEC standards provide various types of standards applied to different types of electronic components. Among them is AEC-Q200 which applies to passive components. Passive components refer to components that consume, store, or release supplied power.

• AEC-Q100: integrated circuits (IC)
• AEC-Q101: discrete semiconductor products (capacitors, transistors, diodes, etc.)
• AEC-Q102: discrete optoelectronics semiconductor products (LEDs, etc.)
• AEC-Q103: vehicular sensors
• AEC-Q104: multichip modules (containing multiple chip pairs, ICs, etc.)
• AEC-Q200: passive components (resistors, capacitors, inductors, etc.)

AEC-Q200 grades

AEC standards classify components into different grades corresponding to their service temperature ranges. These grades define individual places where classified components are allowed to be used. AEC-Q200 provides five grade categories, and components with a lower grade number must be able to withstand lower and higher temperatures.

Table 1 Guaranteed temperature range and applicable locations for each grade

AEC-Q200 test items

To run safely in a harsh environment, an automobile must have its electronic components keep operating normally. These electronic components cannot be put on the market as components conforming to AEC-Q200 requirements unless they pass environment tests, electrical tests, etc., conducted under severe test conditions. Passive components to be certified by AEC-Q200 tests and test items to be applied are listed in the following table.

Various components to be tested include capacitors, resistors, varistors, and crystal vibrators, with test items being specified for each component. Test items vary also depending on whether a component to be tested is a lead component or a surface mount device (SMD). In addition, capacitors of different types should be tested with different test items. So, these tests must be conducted carefully.