Why I am a Global Warming Skeptic
Folks, I am a global warming skeptic. This term, however, requires some explanation. I believe in climate change. The climat...
Solder Paste
Wet Gold II: Measuring Gold Content in an Ore With Only a Scale
Folks, In my last post we saw how you could measure density with only a scale. In this post, we will expand on that technique and learn h...
Wet Gold: A Technique to Measure Density Without Knowing the Volume
Folks, In the category of interesting requests, Ron, a gold worker, from Guyana, sent me the following note: Dr. Ron, My colleagues use a “...
Has Lead-Free RoHS Compliant Assembly Reliability and Cost "Arrived?"
Folks, I was at APEX 2013 San Diego this past week. San Diego is a great venue for the show, but I always forget how cold it can be (55-65°F...
Weibull Analysis III: Multiple Failure Modes
Folks, Our discussion of Weibull Analysis continues…..Let’s say you have worked hard and assembled some SMT lead-free PCBs for thermal c...
Weibull Analysis II: The Curse of the Early First Failure
Folks, In continuing our discussion on Weibull Analysis, let’s assume we assembled some SMT and through-hole PCBs with lead-free solder paste....
"How to Create a Mind": A Thought-Provoking Book By Ray Kurzweil
Folks, Let’s step away from electronics assembly challenges, and deep considerations of solder paste, solder preforms, and wave soldering, ...
Time Required for Refrigerated Flux and Solder Paste to Reach Room Temperature
One question that I often hear from customers is; “Once out of the refrigerator, how long do I have to wait to allow my solder paste and/or flux...
Variables in the Package-on-Package Process
When designing a Package-on-Package (PoP) assembly process, there are many variables that need to be considered in order to be successful. While...
Addressing a Defect of Poor wetting and Non-Spread of Solder Preforms
We’ve heard about the solder paste “graping” defect, but the same oxidation challenge occurs in other solder forms as well, such as ...
你提供的方案可以给客户带来什么？What can your solution really bring to customers?
前段时间我们接触了“Strategic Selling” 和 “Conceptual Selling”į...
Solder Paste for Low Temperature and Pb-Free Applications
There are a lot of parameters to consider when choosing the right solder for your application: 1) The operational temperature of the final device p st...