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Join Me at SMTAI 2023
Folks, This year SMTAI is in Minneapolis from October 9 to October 12. I will be giving a paper on hotbar soldering in the morning on Thursday October 12, as p...
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Folks, Digikey colleague Aaron Rollens developed the equation to convert the mass on a spool of solder wire into its length. I also developed the equation to...
Read MoreTechnique to Estimate the Upper Confidence Limit on Failure Rates
Folks, Let’s assume you would like to estimate the upper confidence limit of a failure rate. As an example, assume you have 21 samples of 1000 that fail....
Read MoreAcceleration Factors in Life Testing of Electronics
Folks, You are the project manager for a PCB that must function in an environment from -10 to 80 C. The PCB will experience one thermal cycle per day in this r...
Read MoreExcel Spreadsheet to Calculate and Graph Intermetallic Growth in Solder Joints
Folks, In my last post, I discussed the concern for copper-tin intermetallic (IMC) growth in solder joints at high service temperatures. Since then, I have dev...
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