SCS Blog
Recent SCS Blogs
Ruggedizing COTS Electronics with Parylene
Parylene Coatings and COTS Electronics Because each conformal coating material has its unique strengths, selecting the right one for a particular application often depends on the specific environment where the product is to be used. Parylene conformal coatings provide dependable protection for printed circuit boards (PCBs) and related electronic assemblies. They safeguard components from contaminants,... Read More >>
The Impact of Temperature on Parylene Adhesion
Basic Thermal Properties of Parylene Conformal Coatings Vapor deposited Parylene combines high thermal stability with a low dielectric constant, minimal moisture absorption and other advantageous properties which sustain its adhesion to substrate surfaces. Among the most beneficial of Parylenes’ thermal properties is their ability to function at an exceptional range of temperatures. Depending on the... Read More >>
Mastering the Parylene Coating Process
While the Parylene deposition process is relatively straightforward, its implementation can pose challenges, especially in controlling coating thickness and ensuring a successful coating cycle. Because coating type and required surface thickness vary according to substrate material and coating project, deposition rates fluctuate. Processing times can vary from under an hour to over 24 hours, with a deposition rate of... Read More >>
How Easy is Parylene to Rework?
When it comes to reworking, Parylene’s strengths are also its biggest drawbacks. In addition to its ability to conformally coat substrates, it is also, by design, very challenging to remove. However, a good planning strategy before coating can help to reduce the need for Parylene rework. The Parylene Challenge Parylene dimer is deposited as a... Read More >>
Parylene for Medical Sensors
Many medical devices rely on sensors to detect and measure conditions affecting patient health. These sensors often record and transmit data on physical properties like heartbeat, blood pressure, breath rate, temperature and more to medical personnel and technology, enabling continuous physiological monitoring of health-specific disorders and improving the quality of diagnosis and treatment. Sensors are... Read More >>
Conformal Coating Boots vs. Tape: Making the Right Choice
Masking tapes and boots serve to shield components for specific masking purposes. Optimal masking protection hinges on selecting between the two options. It is imperative to uphold conductivity at all times. Moreover, operational variables such as the assembly’s production volume, the surface geometry of the component/assembly, and the type of coating on the assembly substrate... Read More >>
What is a Good Thickness for Acrylic Conformal Coating?
Acrylic conformal coatings (type AR), such as MG Chemicals 419C and HumiSeal® 1B31, are a very popular conformal coating choice. They are used primarily for moisture protection on printed circuit boards. Often, they are utilized because of their easy-to-use nature. As a result of this, acrylic conformal coating is frequently applied as a DIY project.... Read More >>
Repairing Parylene Delamination
Applied as a conformal coating through a unique chemical vapor deposition (CVD) process, Parylene conformal coatings provide an ultra-thin, pinhole-free barrier protection for a wide range of components. With appropriate pre-treatment, CVD penetrates deep within substrate surfaces, rather than merely attaching to substrate exteriors. Ultra-thin protection negates operational dysfunction caused by excessive coating mass or... Read More >>
A Guide to Parylene Service Temperatures
A specialized chemical vapor deposition (CVD) process adheres Parylene conformal coatings to substrates. CVD uniformly encapsulates all exposed substrate surfaces as a gaseous monomer; completely eliminating wet coatings’ liquid phase and need for post-deposition curing. Synthesizing in-process, CVD polymerization requires careful monitoring of temperature levels throughout. Beneficial thermal properties of Parylene protective coatings include reliable... Read More >>
Benefits of Conformal Coatings for LEDs
LEDs are often subjected to harsh environments. To ensure that they perform reliably long term in these conditions, LEDs often rely on conformal coatings. Below are the three coatings commonly considered to protect LEDs: Parylenes: Parylenes are often selected due to their ultra-thin, optically clear nature and resistance to moisture and chemicals. Designed for harsh... Read More >>
