Assembled circuit boards

Wide bandgap power devices are key to an all-electric future. Most of the applications in this all-electric future (automotive, aerospace, etc.) have extreme reliability requirements, such as less than 1 ppm failure in 25 years. Ensuring such extreme reliability requires careful modeling and use of aggressive guard-banding (de-rating parts) and redundancy to overcome risks due to incomplete or low-confidence reliability data. Fundamentally, there is a remarkable time cost associated with performing statistically significant long-term reliability tests with appropriate lifetime acceleration physics. This time cost is so steep that industry has turned to more expedient tests to test larger numbers of devices. The direct correlation between these rapid tests and long-term reliability is generally missing. As a result, designers of high reliability systems are left with an incomplete picture which further perpetuates the perceived need for