Product test plans are critical to the success of a new product or technology. Preparing a viable test plan involves several steps to properly identify the requirements for the tests. While many test parameters will vary from product to product, there are elements of the methodology for a test plan approach that remain consistent. These include the necessity for a BOM review to determine part limitations, assessing the field environmental conditions so they can be properly mapped to the tests implemented, and the impact of failure history, should it exist. The objective is to develop a test plan that does not stress the assembly to a level where a failure might not be experienced in the field.
As the smartphone market has stagnated, semiconductor manufacturers have started to pivot their focus to automotive electronics to find the next large volume growth opportunity. This adjustment is for good reason: while smartphone volumes have not changed in over three years, automotive electronics will be the fastest growing market for integrated circuits until at least 2021.
To be successful in the competitive landscape that is automotive electronics, semiconductor manufacturers must account for differences in how automotive OEMs and their suppliers qualify integrated circuits compared to consumer products. While the differences are numerous, a key factor is the critical importance of board level reliability testing.
In my conversations with product engineers and designers, I often come across people who feel confident that their lithium-ion batteries are safe because they passed standards-based safety tests. If that is indeed the case, then why did major global companies experience thermal events even after having passed compliance tests? And that brings up a bigger question – are standards-based tests such as UL safety tests sufficient to guarantee lithium-ion battery safety?