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How to Calculated Equivalent Cp and Cpk when Spec Limits are Not Symmetrical

Folks, Cp and Cpk assume symmetrical specification limits with respect to the target. However, sometimes specification limits are not symmetrical. As ...

Join Me at SMTA PanPac 2024

SMTA PanPac is a unique experience. In addition to the obvious draw of Hawaii in January, the conference tends to have thought leaders in the electron...

Elon Musk Biography Conclusion

Folks, Let’s look in on Ivy University Professor Patty Coleman as she chats with John Archer about Walter Isaacson’s biography of Elon Mus...

Professor Patty Coleman on The Biography of Elon Musk

Folks, It has been a very long time since we checked in on Patty. Let's see how she is doing......

Second Post on Thinking Metric

Folks, Continuing our post on thinking metric: I am 5 feet 10 inches tall or 70 inches. There are 2.54 centimeters per inch, so 2 times 70 = 140, then...

Do We in the US "Think Metric?"

Folks, here are some tips and tricks for an easy conversion of celcius to farenheit and vice versa......

Using ANOVA to Compare Three or More Solder Pastes for a Metric-Like Transfer Efficiency

An Interview with Professor Patty Coleman....

Stencil Printing Response to Pause

Folks, Good friends Phil Zarrow and Jim Hall did an episode on their world famous “podcast” “Boardtalk” on the importance of r...

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...

Spreadsheet to Turn Solder Wire Mass to Length and Vice Versa

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 equa...

Technique 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 t...

Acceleration 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 ...