SCS Blog
Recent SCS Blogs
What is the Service Life of Parylene?
Under ambient conditions (room temperature, in air) Parylene is a lifetime conformal coating. Exposure to environmental stressors like temperature, oxygen, UV-light and chemicals can degrade the lifetime, especially when two or more are present at the same time. Grattan and Bilz, reported that the useful lifetime of Parylene as a conformal coating at 25°C (room... Read More >>
Polyurethane Conformal Coatings: When To Consider An Alternative
Polyurethanes (urethane resin – UR) are polymeric, flexible, insulating, hard and chemically resistant conformal coatings that are used to protect electronic parts from chemical corrosion, oil, moisture, fungus and static discharges. Polyurethane coatings are supplied as single or two-component formulas. These coatings are suitable for printed circuit board applications such as sensors in the oil... Read More >>
Five Common Causes of Parylene Failure
Parylene application generates an ultra-thin layer of electrical insulation that prevents contact between physical contaminants and the conductive elements of printed circuit boards (PCBs). Parylene also protects PCBs from the impact of corrosive vapors and moisture that may degrade their metallic components, providing a reliable barrier that significantly reduces the impact of these contaminants. Parylene... Read More >>
Surface Treatments Prior to Parylene Coating
Pre-coating Essentials Poor Parylene adhesion negates many of the coating’s most-valued functional properties, including dielectric strength and resistance to the effects of chemicals, corrosive agents and moisture. Surface treatments that amplify the interface adhesion between the deposited Parylene and the coated substrate are therefore highly desirable before the chemical vapor deposition (CVD) process is enacted.... Read More >>
Nanocoating and Conformal Coating: A Functional Comparison
The engineering of functional systems at the molecular scale, nanotechnology encompasses management of individual atoms, combined into effective working units, often complex as machines. Yielding advantages like enhanced chemical reactivity and strength than larger-scale structures, they offer greater control of the light spectrum and weigh significantly less. Incredibly small, one nanometer is a billionth of... Read More >>
Parylene and Tin Whiskers
Tin whiskers have long been a frustrating occurrence for those manufacturing and using electronic devices. First discovered in the 1940s, the whiskering of metal has been the cause of serious problems, including the damaging of vital and difficult to replace equipment. Finding ways to prevent or slow the growth of whiskers has been a focus... Read More >>
Parylene and Hydrofluoric Acid
Parylene is a chemically inert conformal coating [1]. It has a well-established vapor deposition process and patterning methods. It is a great candidate for use in various application areas (health, aerospace, oil and gas, microelectronics and so on.) due to its mechanical, physical, optical and chemical properties. Parylene is known to withstand highly corrosive environments,... Read More >>
What is the Price of Parylene Conformal Coating?
Parylene stands out as the premium conformal coating choice for safeguarding devices, components and surfaces across electronics, instrumentation, aerospace, medical and engineering sectors. Renowned for its chemical stability, Parylene serves as an exceptional barrier material, displaying resistance to solvents and moisture, remarkable dielectric strength and uniform coverage. Engineers generally have a strong affinity for Parylene... Read More >>
How Long Does the Parylene Coating Process Take?
ParyIene’s distinctive vapor-phase polymerization method sets it apart significantly from the application procedures of other coating materials. This more intricate process involves directly depositing the substance onto the material being coated, enabling deeper penetration into the substrate surface. Executed within a specialized vacuum chamber, Parylene’s application process eliminates the need for the typical intermediate liquid... Read More >>
Protecting LEDs with Parylene
LEDs are gradually replacing all other types of lighting. As they move out of consumer electronics and into general purpose applications, the demands on the technology are shifting. It is relatively easy to keep an LED safe when it is mounted in the front panel of a computer or hidden under a cover on an... Read More >>
