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The Fred and Bob Breaks Saga Continues
(continued from previous post) “Fred break, Bob break?” Phil asked. Folks, The "Fred and Bob Breaks"saga continues, “Fred is the tech responsible for the stencil printer
Bob Breaks and Fred Breaks
Folks, Dr. Phil James, a former student of “The Professor”, gets a phone call, let’s listen in…… Phil James was staring out the window of his office in Exeter, NH.Fall
Transitioning from Water-Soluble Solder Paste Flux to No-Clean Solder Paste Flux
I just visited a customer that was converting from water soluble solder paste to no-clean. Not exactly a slam dunk transition as this customer found out. During my visit, solder balls and solder
Metallurgy as Modern Alchemy: Bismuth
Although most scientists today feel that alchemy has been widely discredited, and I have been taught to agree, the idea of it is whimsical and
Bismuth: My New Friend
Lately I have been researching a bunch of things, one of my favorite topics being soldering alloys. For a long time most solder (nearly all) was comprised of tin-lead eutectic
Understanding Thermal Resistance Calculations
I have previously discussed various reasons why thermal considerations in a device cannot be an afterthought.There are various methods for handling the thermal needs of a device before it becomes a
Gallium Solder Alloys: Questions & Answers
I’ve received numerous questions about using gallium liquid metal alloys, so thought I’d present some of my answers for all. The customerquestions are in black, and my responses in red.
Wafer and Substrate Bumping with Solder Paste (II)
… and we’re back on the question of “how small a solder powder particle do I need, to achieve a certain bump height or bump
Wafer and Substrate Bumping with Solder Paste (I)
This week’s topic is both wafer bumping and substrate bumping with solder paste, and the issue of powder
SMT Soldering Reflow Profiling and Ramp Rates
Solder paste is made to be reflowed in the SMT process. Exactly HOW that is done is critical to your success. Included in the Product Data Sheet, among other things, are parameters which guide the
Soldering 101 CTE Mismatch
The Northeast USA (as well as other parts of the country) have been experiencing quite a warm summer. And, if walking out into the humidity wasn't clue enough, I would just have to test the fit
Patty and Rob Succeed with Two High uptime Lines.
Folks, The adventures of Patty and Rob continue……. Rob bolted upright in bed. He had that terrible feeling that he had overslept for an important appointment. His eyes quickly found the
Is it Possible to Pay US Wages and Compete with Low Wage Countries?
Folks, The adventuresofPatty and Rob continue…….. “No way Rob. I can’t buy this one,” shouted Phil. “I’m telling you I did all of the calculations. I know it
An SMT PCB Assembly Competency Screening Quiz
Folks, Patty and Rob return from their honeymoon……. Patty had just finished some emails and was ready to head off to meet Rob and some of their buddies for
Solder Powder Types 3 4 5 6 7…
My friend and colleague, Eric Bastow, got back last month from an IPC standards meeting with some interesting news for those of us who supply and use solder
Indium 101 – Earth Abundant Material or Rare?
Wandering through the references to indium metalon the internet, I sometimes see it referred to as, "that 'rare'
Patty Tackles Graping in China
Folks, After a bit of a break, the adventures of Patty, Rob, and The Professor continue: The plane droned on as it made its slow march from Detroit to Tokyo. Patty looked down at Rob as he slumbered
Unique Solderspheres
Solderspheres or solder spheres, or even solder balls: whatever you call them, Indium Corporation has been making them for years and has rightly acquired the reputation for doing whatever it takes to
Halogen-free High-Lead(Pb) Die-Attach Solder Paste: Not an Oxymoron
I mentioned in a previous a blog posting that the primary driver for halogen-free electronics is ostensibly environmental, but that the confusion about “which halogens and which molecules and
Are Solder-Related Tin Whiskers Implicated in Toyota Sudden Acceleration Issues?
Folks, After my recent post on the fact that there was no data linking tin whiskers to the Toyota sudden acceleration issues, there continue to be more posts saying things like “Tin Whiskers
Solder Reflow Profiling Tips – Graping
Graping is a phenomenon which appears as un-reflowed solder particles, typically seen on the surface of the solder joint. The graping phenomena has become more common due to some of the following
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