SCS Blog
Recent SCS Blogs
How to Choose Parylene Thickness: Thin vs Thick Films
Implications of Parylene Coating Thickness Parylenes offer high purity and they eliminate hazardous waste due to the vapor deposition process that does not make use of solvents and catalysts [1]. Their low dielectric coefficients, excellent adhesion to various surfaces and conformal coating properties make them a key polymer in multiple applications. Thickness changes in the... Read More >>
Cost of Parylene Dimer
Perhaps the most reliable of the conformal coatings, the cost of applying Parylene coatings (poly para-xylylene) varies depending on labor requirements (e.g., cleaning, masking, application, demasking, inspection, etc.), raw material costs and batch size (number of parts to be coated at one time). Parylene CVD and Dimer Requirements The Parylene chemical vapor deposition (CVD) process... Read More >>
How to Setup a Conformal Coating Spray Operation
Spray coating involves applying conformal coating directly onto the printed circuit board (PCB) by spraying. This method is usually done manually in a spray booth or via aerosol, but it can also be automated or robotic for specific coating tasks. PCBs are safeguarded by spraying liquid conformal coatings like acrylic, epoxy, silicone, and urethane onto... Read More >>
Rugged Electronics and Conformal Coating
With a rise in global military presence and our reliance on electronics for vital operations, it comes as no shock that the defense, automotive and electronics industries are shifting towards ruggedized electronics. Projections indicate the market could hit approximately $1.5 billion by the close of 2026. What are Ruggedized Electronics? While many electronics tout their... Read More >>
4 Aerospace Applications of Parylene
Superior to liquid coatings like acrylic, epoxy, silicone and urethane, Parylene conformal films offer unparalleled protection for aerospace printed circuit boards (PCBs) and related electronic assemblies. Their complete encapsulation conforms entirely to all device surfaces – flat, round, creviced or edged, while adding almost no weight to the covered device. These properties are largely the... Read More >>
What do I need for a Parylene Coating Quote?
Parylene (XY) has rightfully earned its reputation as the most versatile and dependable among the primary conformal coating materials available. However, unlike liquid coatings –resins of acrylic, epoxy, silicone and urethane – Parylene cannot be applied via relatively economical brush, dip or spray methods. XY can be the most expensive of the major conformal coatings... Read More >>
Parylene: Protecting MEMS in the Military
Offering sensitivity and performance in a compact package, microelectromechanical systems (MEMS) have become increasingly prevalent in defense applications over the last decade and are enabling significant technological advances. As with all things defense-related, robust protection of these sensitive electronics is imperative to ensure that they can withstand the harsh conditions often found on the battlefield.... Read More >>
Is Parylene a Conformal Coating?
If you have been told that Parylene is not a conformal coating because it is not applied in liquid form, that is a misconception. Parylene has consistently established itself as the ultimate conformal coating for a variety of reasons, including: Parylene’s relative superiority is largely based on its unique application method. Parylene Chemical Vapor Deposition... Read More >>
Conformal Coatings Thickness: Comparing Parylene with Liquid Coatings
Of the five most commonly used conformal coatings, four – acrylic (AR), epoxy (ER), silicone (SR) and urethane (UR) – are classified as wet materials, meaning they are applied to substrates by three basic types of liquid-based technology: A fifth conformal coating material, Parylene (XY), is not applied as a wet substance. Rather, a unique... Read More >>
Parylene Dielectric Properties
Basic Dielectrics and Conformal Coatings A low dielectric substance is an electrical insulator that becomes polarized by applied energy, reducing the resulting electric field, thus minimizing electric power loss. Conversely, high dielectric mediums are efficient supporters of electrostatic fields that also dissipate thermal energy at a minimal rate; thus, they have the potential to store energy.... Read More >>
