SMT007 Magazine

SMT007-May2025

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ROSE test, things were really bad. So, we are evolving and looking at these tests more carefully. In cross-section evaluation, I'm looking at six points on three via structures of 20,000 via struc- tures on my circuit board. Is that giving me what I want? Does that represent anything meaningful? People are ques- tioning all of this now because things are getting smaller and more complex. Technology is changing very rapidly. We just can't rely on what we have always done in the past. We are making these tests valuable. So, yes, this testing tech- nology is excellent because it offers sig- nificantly more value. When industry looks at creating a test strategy, what considerations should they be looking at? Neves: If you look at all standards and testing, they're almost 100% driven by failures experienced. They are driven by the fact that someone has had a very expensive failure somewhere, and someone else high up at the company has said, "This will never ever happen again." Therefore, a lot of effort goes into trying to prevent that from happen- ing, whether it's standards, creating new tests, or increasing sampling. You will see that in industry documents too. Learning from bad experiences or out- comes is, maybe, a better way to say it. As these issues become a wide- spread industry concern, you ultimately bring together a group of individuals from various fields or companies to develop a solution, whether it's a speci- fication, a testing method, or something else. Unfortunately, it follows a back- ward-looking approach, but that's the reality. Few have the time or resources to invest significantly in the forward- looking aspect, aside from those who are designing and striving to create smaller, faster, and better products. So, if someone were forward-facing, what advice would you give? Obviously, you will focus on the issues that cost the most, but what should their strat- egy be to remove that pain point? Neves: First, it's a philosophy of manag- ing your supply chain and understand- ing that building a board or building cer- tain things within that supply chain is very complex. It is also important to understand that expecting the supply chain to be great all the time is just not reality. At some point someone in your supply chain will fail. How do you manage that? Do you test the heck out of everything, or do you

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