SCS Blog
Recent SCS Blogs
Dry-Film Lubricity of Parylene
Chemically inert Parylene (Poly-para-xylylene/XY) conformal film is often selected because its micron-thin protective films generate precise coating uniformity, regardless of substrate topography. To this extent, XY far exceeds the capacities of liquid materials – resins of acrylic, epoxy, silicone or urethane – for a wide range of coating assignments. While pre-synthesized liquid coatings are easier... Read More >>
Masking for Parylene Deposition
Parylene deposition is a complicated process that needs to be effectively monitored to ensure its superior levels of protection and performance. Improper application of Parylene may negatively impact the functionality, integrity and performance of an assembly or component. Masking specific substrate areas is crucial during the Parylene coating process. Examples of Potential Product Failure Parylene conformal... Read More >>
Nine Questions to Ask About Contamination, Cleaning, Failures, and Defects in Conformal Coating
To ensure a conformal coating provider has the credentials and expertise necessary for a specific application, certain criteria must be considered. The first step is to ensure the provider is knowledgeable about working with the five primary types of conformal coating: acrylics, urethanes, silicones, epoxies and Parylene. A company with this broad experience will provide... Read More >>
Will Parylene Pass a Taber Test?
Taber tests are designed to measure a material’s capacity to withstand abrasion and its effects during operation. Conformal coatings – liquids and Parylene – are used on printed circuit boards (PCBs) and related electrical assemblies to safeguard their function from hostile environments where operational conditions could lead to development of abrasion, arcing, electrical shorting, fungus,... Read More >>
Conformal Coating for Automotive Applications
Parylene is becoming one of the most useful tools in an automotive design engineer’s arsenal. From protecting internal sensors and circuit boards to keeping LED indicator lights bright and color-accurate, Parylene conformal coatings are an important part of protecting today’s sensitive automotive electronics. Parylene Basics Parylene is a unique conformal coating in that it gets... Read More >>
How Thick should Silicone Conformal Coating be Applied?
Silicone conformal coating is commonly used because of its excellent moisture resistance, short cure time and high temperature capabilities. It is also one of the easiest conformal coatings to work with. In order for the coating to function optimally, it has to be applied at the proper thickness. Maintaining appropriate thickness is critical for silicone... Read More >>
The Cost of Parylene Coating vs. Other Conformal Coatings
Parylene is widely regarded as the ultimate conformal coating for safeguarding devices, components, and surfaces in various industries due to its exceptional ability to prevent the infiltration of gases, liquids, or radiation onto circuit board components. The perceived cost of Parylene is a problem, however. This article will explore the cost of Parylene when compared... Read More >>
Can I Spray Parylene Myself?
Can I spray Parylene myself? Can Parylene even be spray coated? The short answer to both of these questions is no. Let’s take a look at Parylene’s chemistry and physics to understand why. Polymerization Type and Process For Parylene film to be formed and subsequently serve as a conformal coating, the dimerized starting material must... Read More >>
What Causes Bubbles In Conformal Coating?
A major causes for failure during conformal coating inspection is bubbles. Bubbles are trapped pockets of air under coating that can cause voids. The 6 Leading Causes of Bubbles: SCS is the world leader in conformal coating services and technologies with more than 50 years of application and engineering expertise. To discuss your application, call... Read More >>
Managing the Conformal Coating Process
Managing the conformal coating process begins with a precise definition of coverage required. Pre-process discussions need to take place to clarify coating requirements and agree whether the coating is needed on metallic or hermetically-sealed regions of the assembly, as well as coverage below/beneath components, or on the backside of electronic leads. Understanding these conditions prior... Read More >>
