SCS Blog
Recent SCS Blogs
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 >>
Dielectrical Performance and Strength of Parylene
A primary function of all conformal coatings is maintaining sufficient insulation and avoiding dielectric breakdown while protecting printed circuit boards (PCBs) and related electronic assemblies. Providing a completely homogeneous coating surface, Parylene (XY) conformal coatings are exceptionally corrosion-resistant, dense and pinhole-free. Among other performance advantages, ultra-thin XY protective films offer superior dielectric properties. Dielectric substances... Read More >>
Silicone Conformal Coating offers Many Benefits
Silicone conformal coating is gaining traction as a preferred choice for various applications. Its high temperature resistance, moisture protection, and ease of application and rework make it an ideal option for numerous projects. Most silicone coatings have a continuous operating temperature rating of 200ºC. This is much higher than Parylene N (80ºC) and acrylic (125ºC)... Read More >>
Is Conformal Coating Necessary for PCBs?
When designing a product or system, the PCB is one of the most critical components, supporting main functions like power supply and communication. It is key to maximize the PCB’s working life and protect it from harsh environments. Conformal coating provides PCBs the protection needed to endure various conditions and work reliably. Utilizing conformal coating... Read More >>
Best Coating for Dielectric Strength
Dielectric strength, also known as voltage breakdown strength (Vbd) is a measure of a conformal coating’s electrical insulation effectiveness. Higher values are often key to success for design engineers, and when it comes to conformal coatings, those with hydrophobic properties and lower extractible ionic impurities are less likely to both attract water and render the... Read More >>
Parylene Removal, Rework and Repair
The advantages of Parylene as a conformal coating are widely recognized. It resists heat, cold, moisture and pressure; salt spray, electricity and solvents cannot permeate it. And while these attributes of Parylene contribute to the conformal coating’s appeal, they also present distinct challenges, particularly in regards to Parylene removal, rework and repair. Because of Parylene’s... Read More >>
What if my Conformal Coating is Applied Too Thick?
The thickness of conformal coating plays a vital role in the optimal performance of printed wiring assemblies, circuit boards, and electronic devices. An inadequate coating thickness hinders proper coverage, while an excessive thickness can lead to undue stress on solder joints and components, especially glass-bodied ones. Additionally, controlling coating thickness is of great importance with... Read More >>
Lubricious Coatings
Lubricity refers to a conformal coating’s capability to reduce friction during operation, preventing any hindrances to its function that could jeopardize patient well-being. Lubricious coatings offer essential protection for devices such as cardiac-assist devices (CADs), catheters, elastomers, cables guidewires and stents. In contrast to an uncoated device, lubricious films can reduce frictional forces by more... Read More >>
