IC lifespan testing and early failure rate assessment
As the manufacturing technology continues to advance, the requirements for long-term reliability of products have become increasingly stringent. International standards such as JEDEC, AEC, and MIL all emphasizelife testListed as one of the most critical items in semiconductor verification, used to assess the lifespan, early failure rate, and long-term reliability of components in real usage scenarios.
Operation Life Test (OLT)It is a crucial part of semiconductor component testing, used to evaluate the durability and failure modes of components under prolonged power supply and high-temperature environments. Compared to general testing items, the execution of life tests is more complex and rigorous, especially requiring the combination ofPrecision design and manufacturing of burn-in boardsto ensure that the stress conditions can be accurately applied to the tested components.此外，Early Life Failure Rate (ELFR)Mainly used to verify the reliability of components during the initial usage phase, to eliminate potential defects and weaknesses in the manufacturing process, ensuring that the product can operate stably after leaving the factory and reducing the risk of early failure.
MA-tek integrates years of experience in semiconductor processes and reliability verification.Burn-in Board design and manufacturing, accelerated life testing, early life failure rate assessment, and life prediction modelsprovides the most comprehensive one-stop OLT/ELFR verification solution, assisting customers in establishing component lifetime models, enhancing product quality control capabilities, and meeting international automotive regulations and electronic product reliability requirements.
Due to considerations such as the application frequency, speed, heat generation, and impedance matching of semiconductor components, the accuracy and reliability of life testing highly depend on the design and manufacturing quality of the aging board. The aging board must simultaneously take into account signal integrity, heat dissipation capability, operating frequency, impedance matching, and the stability of components under high-temperature conditions. Therefore, its production is far more complex than that of general testing fixtures. MA-tek reliability laboratory provides comprehensive aging board design and manufacturing services based on customer product characteristics and testing conditions.
For standard packaging or general testing scenarios, universal boards can be selected in combination with adapter boards to control costs; if the components have special frequency, driving methods, or high power requirements, we can also assist customers in designing dedicated boards for testing to ensure optimal operational stability of the components under high temperature, bias, and dynamic signal conditions.
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Figure 1 Universal Aging Board
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Figure 2 LC2Socket Sample Image
1. High-Temperature Operating Life Test (HTOL)
Using high temperature and bias while adding dynamic signals allows components to age continuously under conditions similar to actual operation, suitable for assessing critical voltage drift, leakage behavior, interface quality degradation, and material fatigue, making it a core test for evaluating overall circuit lifetime.
2. Early Life Failure Rate (ELFR)
Accelerated exposure of components to high temperature and bias is used to screen for potential early failures in products. ELFR is the most important screening mechanism for early failures in quality control and mass production of automotive electronics, directly reflecting process stability and material integrity.
Reliability testing using temperature as the main accelerated factor (Accelerated Factor, AF) is primarily based on the exponential equation of Arrhenius' Equation. Appropriate activation energy (Activation Energy) is selected to estimate the differences in acceleration multiples, and through accelerated life testing, the lifespan under a specific confidence level can be estimated. Semiconductor components are often calculated using FIT (Failure In Time) and MTTF (Mean Time To Failure). However, for users, whether it is FIT or MTTF, it is not easy to convey to customers the level of risk that the component will face in the future, which can lead to misunderstandings and difficulties in inventory management for production materials.
Another commonly used method for estimating lifespan, different from the traditional FIT or MTTF models, is to calculate the required testing time by dividing the usage demand time (for example, 10 years) by the acceleration factor, with automotive electronics being a typical representative. MA-tek's chip lifespan testing is conducted by a team of professionals with many years of experience in semiconductor processes and equipment, providing customers with a one-stop service. Lifespan testing services are available in both Taiwan and Shanghai laboratories, and the current equipment capabilities of the laboratories are as follows, catering to the individual needs of different customers:
Table 1 Component Aging Test Equipment Specifications
