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High Risk Electronics and PCB Conformal Coating Services


In the age of personal electronic devices, the need for effective PCB conformal coating extends to consumer goods as well as traditional military, aerospace, industrial and medical systems. Parylene conformal coatings are up to the task, delivering dependable protection against moisture, gases, solvents, corrosives and temperature extremes. A Parylene coating adds almost no mass or weight to compact, high-risk devices, and ensures effective environmental protection.

Since Parylene film is applied at room temperature under vacuum conditions and is formed with no cure phase or thermal stresses, it is ideal for delicate micro miniature assemblies. The inert conformal coating provides highly uniform coverage across planar surfaces, in deep crevices and around sharp edges. It has high dielectric value even in very thin layers (∼5KV/mil).

CWST’s materials and processes conform to rigorous manufacturing standards, including ISO 9001 and ISO13845. Our national Parylene conformal coating centers operate under quality management systems (QMS) certified to aerospace standard AS9100, and Parylene technicians are trained to meet IPC-J-STD-001 and IPC-A-610 requirements.

Parylene Coating Applications

  • SMT and Hybrid Circuit Assemblies
  • Lead Free Coating
  • Delicate Sensors
  • Microelectromechanical Systems (MEMS)
  • Motor Assemblies
  • Rigid Circuits
  • Flexible Circuits
  • Coil Forms
  • Silicon Wafers
  • Fly-by-Wire Technology
  • LEDs and Digital Displays
  • Integrated Circuits and Hybrids
  • Silicone Keypads
  • Fiber Optic Components
  • PVBs and PWBs
  • Printed Circuit Board Conformal Coating
  • Ferrites

Important Coating Properties

  • High dielectric strength
  • Pinhole-free coverage
  • Absolute conformability across planar surfaces, in crevices and around edges
  • Resistant to organic and inorganic chemicals
  • Closely controllable film thickness
  • Dry film lubricity
  • No cure cycle, no cure forces or thermal stresses
  • Fully effective under widely varying environmental conditions

CWST offers both static and tumble coatings to match the requirements of the application. Services include applications engineering, production planning, documentation, cleaning, masking, adhesion promotion and inspection processes required to achieve optimal results.

Other Applications

Aviation & Aerospace

Industrial & Commercial

Medical Technology

Military & Defense