Crevice Penetration of Parylene

Posted by Sean Horn on Fri, Oct 19, 2018

Parylene (XY) polymers provide robust, dielectric, micron-thin conformal coatings for a considerable range of electronic devices, most prominently printed circuit boards (PCBs).  XY’s unique chemical vapor deposition (CVD) application method synthesizes in-process, depositing gaseous parylene deep into a substrate’s surface.  CVD occurs on a molecule-by-molecule basis, conforming to all unde

Parylene Barrier Properties

Posted by Sean Horn on Fri, Jun 1, 2018

Permeation barriers for electronic devices are essential to assure their ongoing performance through a wide range of operational environments.  Polymer flexible conformal coatings provide good barrier protection, protecting device substrates from unwanted incursion by solid contaminants, chemicals, gaseous permeation and liquid water or vaporous forms of moisture.  Permeability reduction improve

Parylene Coating: Does Thicker or Thinner Coating Provide Better Performance?

Posted by Sean Horn on Fri, May 25, 2018

Parylene (XY) conformal coatings are known and recommended because of their many beneficial performance characteristics.  They provide uniform, pinhole-free protective films with excellent barrier/dielectric/insulative properties, able to conform to virtually any substrate configuration.  One property in particular – micron-thin coating layers – distinguishes XY from liquid coating materials