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Coating
Coating parts is optional for those components that require a higher dielectric resistance, resistance to chipping, or a smooth winding surface.
Parylene coating
Fair-Rite offers Parylene coating for select parts. This colorless conformal coating is used on smaller parts due to its higher cost but minimal coating thickness. Fair-Rite currently uses Paralyne-C material:
| Property | Value |
| Dielectric Strength | 5600 V/mil |
| Volume Resistivity | 8.8 x 1016 ohm-cm |
| Surface Resistivity | 1014 ohm |
| Dielectric Constant (1 MHz) | 2.95 |
| Dissipation Factor (1 MHz) | 0.013 |
| Density | 1.29 g/cm3 |
| Water Absorption (24 hours) | < 0.1% |
| Coefficient of Friction | 0.29 |
| Continuous Operating Temperature | <100°C |
| Thermal Conductivity | 2.0 x 10-4 cal/sec/cm/°C |
| Maximum Operating Temperature | <160°C |
Thermo Set Plastic coating
Fair-Rite also offers the ability to coat parts with epoxy. Due to the minimum coating thickness of 0.005”, this method is reserved for parts that are larger in size (diameters > 9mm).
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