Curing UV-Cure Conformal Coatings

Q: What wavelength cures uv-cure conformal coatings?

UV-Cure Conformal Coatings in this class commonly cure at 365 nm, 395 nm, 405 nm. Acrylate coatings cure fast but, like other acrylates, can leave a tacky top layer from oxygen inhibition; some are formulated with a secondary moisture or heat cure for shadowed areas under components. Confirm the exact band on your adhesive datasheet.

Q: Which UV system should I use for uv-cure conformal coatings?

SkyWand. For touch-up and field re-coat the cordless SkyWand goes to the board; for a rework station handling volume the SunSpot 2 cures faster and handles any coating chemistry.

Thin protective films for circuit assemblies that cure on demand under UV, the reason a reworked board can be re-coated and cured in seconds instead of oven-baked.

Chemistry family

Acrylate coating

Cure mechanism

free radical

Common cure bands

365 nm / 395 nm / 405 nm

How It Cures

Acrylate coatings cure fast but, like other acrylates, can leave a tacky top layer from oxygen inhibition; some are formulated with a secondary moisture or heat cure for shadowed areas under components.

Through a substrate: Applied and cured in open air on the board surface, match the source band to the coating and add dose to beat surface inhibition.

Recommended system

SkyWand ›

For touch-up and field re-coat the cordless SkyWand goes to the board; for a rework station handling volume the SunSpot 2 cures faster and handles any coating chemistry.

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Always confirm the exact cure wavelength and dose on your adhesive’s own datasheet, this page describes how the chemistry class behaves, not a specific product.

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