Conformal Coatings

A conformal coating is used to protect electronic components from environmental factors. Adhesives used as conformal coatings are dual-curing: at their edges and visible surfaces they are cured with UV light; the shadowed areas – for example underneath components or chips – as well as deeper-lying regions are then post-cured by heat application.

To cover large surfaces with a conformal coating, we recommend low-viscosity adhesives. These adhesives are equally suited for spray coating, spin coating and dip coating.

Selective conformal coating can be realized with high-viscosity dam material: With a highly viscous adhesive, a frame or dam is formed, which is then filled with mobile adhesive. This process is also referred to as dam-and-fill.

UV-curing conformal coatings allow rapid curing. Especially epoxy resin-based adhesives are silicone-free and ensure maximum media resistance.

Fluorescent adhesive as conformal coating on a PCB

Fluorescent epoxy adhesive is used as Conformal Coating on a PCB

The table below lists a selection of Panacol adhesives suitable as conformal coating. Further products and custom solutions are available on request.

To download the technical datasheets (TDS) please click on the adhesive name.

Adhesive Application Viscosity [mPas] Base Curing*
Vitralit® 1671 Frame material for frame & fill applications 250,000-300,000 epoxy UV
secondary heat cure
Vitralit® 2004 F conformal coating 60-100 epoxy UV
secondary heat cure
Vitralit® 2007 F conformal coating 200-500 epoxy UV
secondary heat cure
Vitralit® 2028 Conformal Coating,
Encapsulation of electronic components
160-300 epoxy UV
secondary heat cure
Vitralit® 2009 F conformal coating 100-200 epoxy UV
secondary heat cure
Vitralit® 4451 conformal coating 500-800 acrylate UV
Vitralit® UD 8050 Conformal coating shear thinning acrylate UV
secondary moisture cure

*UV = 320 - 390 nm