Conformal coating for electronics
Your electronic device deserve the best care â and it starts with circuit board protection. With our conformal coating for electronics, you increase the durability of your boards, prevent failures, and extend the lifetime of your devices. Whether for demanding industrial applications or high-tech modules, conformal coatings for electronics ensure that your PCB designs are perfectly protected.
Surface preparation & cleaning
PCBA cleaning
The quality of a protective coating depends on more than just the coating material itself. Proper surface preparation of the printed circuit board is equally critical. Even the smallest contaminants can impair coating adhesion and reduce the long-term reliability of electronic assemblies. That is why we rely on professional cleaning processes specifically designed to meet the requirements of modern PCBAs.
- Reliable removal of foreign particles and flux residues
- Cleaning with substances specially developed for printed circuit boards and dedicated PCBA washing systems
Thorough cleaning creates the optimal foundation for downstream coating processes and ensures consistent, repeatable results.
Plasma surface activation
For particularly demanding applications, plasma surface activation is performed prior to coating in addition to the cleaning process. During this treatment, the surface of the assembled printed circuit board is activated at a molecular level and freed from organic residues. The process can increase the surface energy of typical PCB materials by up to 75%, resulting in:
- Improved wetting of the coating material
- Up to 13.8% higher adhesion across different surface types
- Enhanced repeatability of the coating process
The result is a more uniform and reliable coating, contributing to greater process stability and long-term protection of the electronic assembly.
Coating technologies
Different electronic components require different protective coatings. Thatâs why we seamlessly integrate advanced conformal coating types into our electronics manufacturing. After circuit board assembly, our conformal coating technologies for electronics are applied to protect PCBs optimally against moisture, chemicals, and mechanical stress.
Whether a thin, transparent layer for complex electronic assemblies or robust potting material, we offer solutions for every PCB design requirement.
Parylene: Maximum protection down to the smallest detail
Parylene provides the highest level of protection: the thin, transparent conformal coating reaches even the finest gaps, under components such as BGAs or QFPs and in hard-to-reach areas. It reliably protects against moisture, chemicals and environmental influences, offers high electrical insulation and reduces whisker formation.
The gentle vacuum process preserves critical electronics, adheres to almost all substrates and guarantees long-lasting, reproducible performance â the conformal coating benchmark for demanding assemblies.
Dam & fill: Precise conformal coating for sensitive electronics
Dam & Fill is the proven solution when sensitive areas of PCBs need precise protection. A stable dam holds the liquid filler exactly in place, sealing even hard-to-reach areas. This creates clean edges, defined volumes and optimal protection against moisture, vibration and environmental influences â without overflowing onto any nearby components.
The automated process combines precise material control, optimal viscosity and gentle handling.
Potting: Complementary protection for your assemblies
Potting with RTV and silicone coating materials is a proven protective method where a liquid, elastic potting compound is applied directly over the electronics. After curing, it surrounds components, solder joints and cavities, forming a flexible, long-lasting protective layer.
Potting is used when electronics must be mechanically isolated and reliably protected against moisture, condensation, dirt, chemicals, or vibration. Thanks to good flow properties and gentle curing, RTV and silicone potting are especially suitable for sensitive electronics modules and industrial applications requiring elastic, low-stress sealing.
In many applications, potting also serves as a preparatory or complementary process for Parylene coatings, combining mechanical stabilization with high-precision surface protection.
Lacquering: Industry-proven protection for your PCBs
Lacquering is an industry-proven method to protect PCBs against moisture, dust and minor chemical influences. Depending on requirements, we use flexible application methods:
- Masking the assembly â manual or automated placement of protective masks to define free areas
- Manual application â precise lacquer application using dispensing systems or brushes
- Dip coating â immersing the entire assembly in the protective layer
- Selective coating & spray coating â automated coating of specific areas according to the lacquer plan
- Film coating â applying ready-made protective films for defined areas
- UV-curable coatings â fast-curing protective layers for short process times
- Material variants â depending on requirements, silicone, acrylic, polyurethane, or epoxy are used to optimize mechanical flexibility, chemical resistance, or electrical insulation
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