Matching a Reflow Profile to a Solder Paste Spec
Folks, Matching a reflow profile to a solder paste spec is a required skill for an SMT process engineer. In light of this, let’s do an exam...
Dr. Ron Lasky's Blog
Belated Happy Birthday RoHS
Folks, Happy Birthday RoHS! A milestone occurred, and it seemed to be missed: RoHS celebrated its 15th birthday on July 1st! For those new to electron...
Calculating Total Downtime
Folks, Downtime calculations can be a bit confusing. Most people would assume that if a line has 4 machines and they are each down for 5% of the time...
Hypothesis and Confidence Interval Calculations for Cp and Cpks
Folks, I am re-posting an updated blog post on Cp and Cpk calculations with Excel®, as I have improved the Excel® spreadsheet. If you wou...
Gallium: An Interesting, Versatile Material
Folks, It is natural to expect that Indium Corporation is the premiere supplier of indium metal, solder pastes, preforms, compounds, and chemistry sol...
Answers to SMT Quiz
A few weeks ago, I posted an SMT quiz on my blog. We received 178 responses, which seemed very good to me. Working with my Indium Corpo...
Take the SMT Quiz and Perhaps Win a Prize
Folks: Do you know how much copper is in SAC305 solder? What about the most typical solder paste powder diameter? These questions, and eight others, a...
Solution to Moore's Law
Folks, In a recent post, I discussed Moore’s Law. I challenged readers to solve for "a" and "b", from the equation a*2^(b*(y...
Still Much Hype Around AI and Industry 4.0
Folks, I recently read an article about “Lighthouse Factories” which appear to be implementations of Industry 4.0. It is encouraging that ...
Tin: The Foundation Metal of Soldering
Folks, The vast majority of solders used in electronic assembly have, as their base metal, tin. There are some specialty gold solders, like gold-co...
Checking Moore’s Law
Folks, Moore’s Law was developed by Gordon Moore in 1965. It predicted that the number of transistors in integrate circuits would double approxi...
SMT Assembly is an Optimization Process
Folks, SMT assembly is an optimization process. There is no single stencil printing process for all PWB designs. The stencil printing parameters of st...