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...
Dr. Ron Lasky's Blog
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 ...
Excel 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...
Concern for Intermetallic Thickness Growth in SAC Solder Joints in Harsh Service Environments
Folks, The service temperature for electronics in a modern automobile can be higher than 125C. These high temperatures raise the concern of copper-tin...
AI Will Not Physically Destroy Civilization
Folks, You have undoubtedly heard in the news that some predict AI will destroy civilization. Even the “Godfather” of AI, Geoffrey Hinton ...
SMTA's Electronics in Harsh Environments Conference in Amsterdam Was a Big Success
Folks, SMTA’s Electronics in Harsh Environments Conference in Amsterdam, The Netherlands, was a big success. Over 60 people attended from all ov...
Join Me at the SMTA Harsh Environments Conference in Amsterdam May 23 to May 25
Folks, Join me at the SMTA Harsh Environments Conference in Amsterdam, The Netherlands on May 23 to May 25, 2023. I will be giving a presentation on &...
Using the Density Technique to Estimate Gold Mass Fractions in Gold Alloys with Silver and Copper
Folks, My second email from Adriana Re using density to determine gold mass fraction is below. She asked if we could communicate in French. The transl...
Calculating the Mass Fraction of Gold in a Gold Alloy
Adriana writes, "Dear Dr. Ron. I’m trying to program the equation for determining the weight fraction of gold in scrap metal from the densi...
P Value Calculator for F Statistics
Folks, In my last post, I discussed an Excel® spreadsheet to calculate p values for hypothesis tests in which the t distribution is employed. The ...