SCS Blog
Recent SCS Blogs
NASA Inspection Criteria for Conformal Coating
The Workmanship Standards developed by the National Aeronautics and Space Agency (NASA) are essential to assuring reliable performance of the aeronautic, defense and space equipment it uses and monitors. Conformal coatings have many applications for these purposes, particularly to provide protection for printed circuit assemblies (PCAs) commonly found in computers or specialized electronic equipment which... Read More >>
Why Conformal Coat
Printed circuit boards are extremely susceptible to a wide range of contaminants that can cause a significant amount of damage in a relatively short period of time. These contaminants include moisture, dust and harmful chemicals. In addition, electronic circuits are also susceptible to extreme temperatures and environments. Conformal coatings provide a protective coating that can... Read More >>
Parylene Coating: Outsourcing vs. In-House
Parylene coating provides critical protection to many electronics, medical devices and defense components. Applying Parylene to components and devices can be done in-house or by a dedicated third party. Knowing which one is right for your operation is key to ensuring an effective, affordable and reliable end product. Below is a look at the differences... Read More >>
Reapplying Conformal Coating after its Removal
Defects to either the PCB assembly or its conformal coating can be sufficient cause for coating removal. Whether repair technologies address the circuit board’s components or the conformal film, subsequent post-repair coating (recoating) processes need to address: Old Coating Removal The complexity of stripping damaged or otherwise unwanted conformal coating from a circuit board is... Read More >>
The Benefits of Acrylic Conformal Coating
Acrylic conformal coatings are a commonly used conformal coatings. Acrylics’ main benefits include its physical properties, convenient cure time and low cost. Acrylic conformal coatings are extremely user friendly, allowing for the ease of application either by brush, dip or spray. Additionally, acrylics typically offer the fastest cure time in comparison to other liquid coatings.... Read More >>
Solvent Resistance of Parylene
Parylene variants offer robust solvent resistance, protecting substrates like printed circuit boards (PCBs) and other electronics components. This high level of protection is sustained over a wide temperature range that exceeds typical operating conditions for PCBs. The exceptional solvent resistance of Parylene is attributed to its unique molecular structure, which makes it largely insoluble in... Read More >>
Acrylic vs. Polyurethane Conformal Coating
Acrylic resin (Type AR) and polyurethane (Type UR) are widely used conformal coatings. While they share the same methods of applications and end use, consider their individual properties before deciding which conformal coating is the best for an application. Application Methods Acrylic liquid conformal coatings, which include MG Chemicals 419C, HumiSeal® 1B31 and HumiSeal 1B73,... Read More >>
Liquid Conformal Coating Failure: 6 Common Causes
Liquid conformal coatings frequently play a critical role in protecting medical, electronics, defense, aerospace, LED and automotive applications from contaminants and other potentially hazardous substances. As reliable as conformal coatings can be, they are not infallible. If the preparation, application, and drying processes are not properly managed, for example, conformal coating defects could develop that compromise... Read More >>
Conformal Coating: Spray, Dip, or Brush?
Liquid conformal coatings-such as acrylics, epoxies, silicones and urethane resins–are applied to electronic applications by means of wet methods, primarily brush, dipping (component immersion) or automated/manual spraying. Parylene conformal coating is applied as a gas through chemical vapor deposition (CVD). Material selection is largely dependent on the application or component being coated and its intended... Read More >>
Conformal Coating Applications: Liquid vs Parylene
Conformal coating of an object occurs when an appropriate coating material is applied on-top and around an underlying substrate, to protect it from such environmental and performance concerns, such as chemical incursion and excess moisture. Liquid organic polymer conformal coatings – acrylic, epoxy, silicone and urethane – prevent: Liquid coatings also reduce the incidence of... Read More >>
