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Is the PC Dead?
Folks, Let’s see how Patty is recovering from her conflict with Hal Lindsay……. Patty saw a link on one of the daily SMT Tech newsletters that piqued her interest. It was titled, “A New Alloy
Galvanic Corrosion of Dissimilar Metals
Not all metals play well together. And this spills over in to the world of electronics and the materials used therein. A relatively new and relevant example came about with the advent of RoHS and the
Per Homogeneous Material Also Applies to Medical Devices Under RoHS
Folks, It's been awhile, let's see what Patty is up to… Patty was in her office, finishing lunch and reading Golf Digest. She was happy to see Tiger Woods doing better, but a little
Indium Sulfide for Thin Film Solar Cells
Here’s an interesting technology fact I just learned: Indium Sulfide was the very first indium compound to be discovered. I bet Reich and Richter (the discovers of indium) never imagined that
First Pass Yield Continued
Folks, Let’s see how Patty is doing with her latest challenge….. Patty had decided to call The Professor and see what advice he had to offer in preparation for her visit to the facility
Great First Pass Yield and Productivity, but Poor Profit?
Folks, Let's see what is up with Patty…….. Patty sat at her computer, admittedly a little tired. She had just gotten back after a week’s vacation in Colonial Williamsburg with
Reflow of Copper Pillar Microbumps
Wafer bumping processes have evolved in the last 10 years. The semiconductor assembly industry has gone from bumping processes using solder paste printing (with all its concerns of voiding,
Leadframe Solderability Issues in Power Semiconductors
It is no secret that automotive semiconductor customers are becoming increasingly demanding. The “under the hood / bonnet” electronics environment is arguably one of the most thermally
Annealing NanoFoil®
NanoFoil®requires a threshold of energy to activate. What happens if that energy value is not met?: Interdiffusion and inhibition of the NanoBond® reaction. This can happen if NanoFoil®
Soldering to Wood
Many surface finishes are solderable with the right flux. Many of our electronic devices use solder to bond copper, silver, gold, and other metals, but did you know that you can solder wooden
What Is Indium?
Being the Indium Corporation, we know what indium is, where it comes from, and how to use it. But sometimes we forget that not everyone is as immersed in indium as we are. So what is indium? Of
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 “wet” gold technique to measure gold alloy
DIY: Applying Solder to Molybdenum, Titanium, and Tungsten (Ultrasonic Soldering)
There are many sputtering target materials that are tricky to solder to. For those alloys we ‘bring out the big guns’ – in this case, our ultrasonic soldering
DIY: Applying Solder to Copper, Nickel, and Platinum (Flux)
In order to NanoBond® parts that are made out of copper, nickel, or platinum, we must first apply solder to the bonding surface. This is most commonly done by melting solder directly onto the
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 cycle testing. You used the best lead-free solder paste,
DIY: Connecting NanoFoil®
Sometimes one piece of NanoFoil® just isn’t enough… We often NanoBond® sputtering targets which are large enough to require multiple sheets of NanoFoil® to cover the width or
DIY: Hand Cutting NanoFoil®
Hand cutting is only one option for shaping NanoFoil®, however it is quick, easy, and inexpensive. All you need to cut NanoFoil® with this method is a good cutting surface, metal straight
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. On this board are also some bottom-side terminated
DIY: Electroplating NanoFoil®
A few years back, Indium Corporation's own Eric Bastow set up a prototype NanoFoil® plating process to demonstrate the material and cost savings of setting up a small plating bath. One of the
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 to reach room temperature in order to use
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 solder washer preforms used to attach small
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