Flux Residue Levels: Not as Simple as you Think
After you’ve reflowed solder in contact with a flux, you’re always left with a certain amount of flux residue. There are no clear industry...
Gold Solder
Learn More About PoP Solder Paste
From an upcoming SMTAI presentation dealing with PoP solder paste: “...Formulation, particle size,......
Pb-Free Solders are Not the Cause of Tin Whiskers
Tin Whiskers growing between pure tin-plated hook terminals of an electromagnetic relay. Image courtesy of nepp.nasa.gov ......
How Much Metal is in Solder Paste?
Something that seems counter-intuitive to many customers, yet seems obvious to a rheologist is why the percent metal loading of solder paste vari...
Everyone Makes Mistakes
This is something you may have run into if you’ve ever manually dipped and placed PoP components.span style="mso-spacerun:......
Corrosion of Indium-Base Solders
Indium TIMs are not susceptible to this type of metallic corrosion. Image courtesy of www.moonraker.com.au/techni/news2.htm ......
8 Reasons Why You Need To Re-evaluate PoP Pastes
A lot has changed in the world of package-on-package in the last few years. The most obvious change......
Soldering to Gold
In previous posts, we have mentioned soldering to gold, but never discussed the unique processing aspects related to this. div sty...
Soldering to Gold with Au/Sn or Tin Solder
Various assemblies utilize solders, including Au/Sn and tin solder, for thermal attachments. These solders perform multiple functions: 1)s...
What's Your Pb-Free Replacement for High Pb Alloys In Die-Attach?
Solder Die Attach Image Courtesy of memsonics.com The clock is ticking before the extension of Pb-free legislation for high Pb-containi...