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RDSON and Solder Volume Resistivity
Interesting question from a Chinese die-attach customer this week asking about volume resistivity of solder. My friend, Eric Bastow, suggested that Indium make this available to all through a blog
Solder 101: Forms of Indium Metal
People use indium in many forms – to create many different products. Certain forms fit various applications. Here are some of the many forms of pure indium that we provide: Ingot – this
Bi/Sn/Ag: The Perfect Tabbing Ribbon Coating Solder Alloy?
Let’s quickly review the advantages of Bi/Sn/Ag alloy tabbing ribbon coating before we discuss them further: Low temperature melting point Pb-free, by definition Beneficial mechanical
Indium Vacuum, Hermetic and Cryogenic Seals
Due to its softness and compressibility, indium is ideal for use in creating a seal. Generally 99.99% indium is adequate for a vacuum, hermetic or cryogenic seal, but higher purities are also
Calculating Solder Paste Usage
Many people try to determine the volume of solder paste that they will use on a given circuit board or during a full production
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
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