Polyurethane Conformal Coatings: When to consider an alternative

Posted by Sean Horn on Fri, Feb 7, 2020

Polyurethanes (Urethane Resin- UR) are polymeric, flexible, insulating, hard and chemically resistant (Acid—Alkali—Salty water) conformal coatings that are used to protect electronic parts from chemical corrosion, oil, moisture, fungus, and static discharges. Polyurethane coatings are supplied as single or two-component formulas. These coatings are suitable for printed circuit board applicatio

Updates on Conformal Coating and Tin Whiskers

Posted by Sean Horn on Fri, Oct 28, 2016

Not completely understood, electrically conductive tin whiskers are crystalline structures between 1-2 millimeters (mm) that can grow from surfaces where tin is used as a final finish; surfaces finished with electroplated tin are particularly susceptible to whisker growth.  Although their occurrence was originally documented during the 1940s, no real solution has yet been devised to […]

Parylene and Tin Whiskers

Posted by Sean Horn on Tue, Nov 26, 2013

Tin whiskers have long been a frustrating occurrence for those manufacturing and using electronic devices. First discovered in the 1940s, the whiskering of metal has been the cause of serious problems including the damaging of vital and difficult to replace equipment. Finding ways to prevent or slow the growth of whiskers has been a focus […]