SCS Blog
Recent SCS Blogs
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 >>
Effects of Adhesion Promotion on Sensors
Sensors measure specific aspects of data-driven technology, including performance properties such as acceleration, fluidity, humidity, temperature, position, pressure or vibration. Sensors collect data and respond with feedback for a multitude of electronic devices utilizing printed circuit boards (PCBs) and related sensitive electronics. Sensors have been successfully adapted for use across a wide range of applications,... Read More >>
How to Measure Conformal Coating Thickness
Methods for Measuring Conformal Coating Thickness For conformal coatings to function effectively, the key lies in achieving the right coating thickness. Printed circuit boards (PCBs) and other electronic devices rely on specific film thicknesses tailored to their performance needs. When deciding on the coating thickness, keep in mind: The non functionality of a crucial component... Read More >>
Repairing Parylene Coated PCBs
Parylene’s chemical vapor deposition (CVD) application method produces lightweight yet robust conformal coatings with superior barrier properties. Unlike liquid methods, the impact of gravity and surface tension is minimal, eliminating issues such as bridging, thinning, pinholes, puddling, run-off or sagging. Parylene coatings typically range from 500 angstroms to 500 microns in thickness. These ultra-thin films... Read More >>
Batch Size Considerations for Parylene Production
The Parylenes consist of a range of para-xylylene polymers whose desirable physical and electrical properties support expansive utilization as conformal coatings for electronic and medical devices. Parylene films are applied to substrates via a chemical vapor deposition (CVD) process, which deposits monomeric Parylene vapor homogeneously and deeply into the surface of printed circuit boards (PCBs)... Read More >>
