Parylene Coating Hub
This Parylene Coating Hub brings together essential guides on Parylene dimer types, deposition processes, masking approaches, thickness measurement, and comparisons with liquid conformal coatings. By exploring these sections step by step, engineers can better understand, select, and optimise Parylene for high-reliability electronics.
In addition, we link to trusted standards so you can align your process with recognised industry guidance.
External resources: See IPC Standards, UL 746E, and ASTM Parylene Test Methods.
Index of Parylene Coating Articles
| Topic | Fast Link | Full Article |
|---|---|---|
| Parylene Basics: Dimer Grades, Properties & Uses | Fast Link | Full Article ↗ |
| Parylene Deposition: Process Parameters | Fast Link | Full Article ↗ |
| Masking for Parylene | Fast Link | Full Article ↗ |
| Optical Thickness Measurement for Parylene | Fast Link | Full Article ↗ |
| Parylene vs Liquid Coatings: Selection Guide | Fast Link | Full Article ↗ |
Parylene Basics: Dimer Grades, Properties & Uses
Parylene comes in multiple dimer grades (C, N, D, F). Each grade has unique properties that influence dielectric strength, barrier protection, and cost. For example, Parylene C balances performance with affordability, while Parylene N provides excellent penetration into tight geometries. Therefore, selecting the right dimer ensures both performance and value.
Parylene Deposition: Process Parameters
Parylene deposits through a vapour deposition process under vacuum. Key parameters such as temperature, chamber pressure, and dimer feed rate directly control coating uniformity. In addition, consistent control helps prevent defects and ensures repeatable results across batches.
Masking Options
Parylene coats in the vapour phase, so masking requires complete sealing. Engineers often use boots, tapes, dots, or custom shields to protect connectors and no-coat regions. As a result, successful masking prevents costly rework and maintains reliability.
Optical Thickness Measurement
Thickness measurement plays a crucial role in quality assurance. Non-contact optical methods provide high accuracy and traceable results, unlike mechanical gauges that can damage the surface. Consequently, optical tools help manufacturers meet customer specifications with confidence.
Parylene vs Liquid Coatings: Selection Guide
Parylene delivers pinhole-free 3D coverage and excellent dielectric strength. In contrast, liquid coatings provide easier rework and lower initial cost. Ultimately, the decision depends on environmental demands, reliability goals, and long-term performance requirements.
Explore Our Knowledge Hubs Further
| Hub | Open |
|---|---|
| Conformal Coating Processes Hub | Open ↗ |
| Equipment & Application Methods Hub | Open ↗ |
| Masking Hub | Open ↗ |
| Inspection & Quality Hub | Open ↗ |
| Removal & Rework Hub | Open ↗ |
| Parylene Coating Hub | Open ↗ |
| Defects & Failure Mechanisms Hub | Open ↗ |
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