DYMAX 984-LVUF

Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others

DYMAX 984-LVUF

Main features

  • Ultra-Fluorescent Coverage Detection
  • Low-Viscosity Thin-Film Application
  • Room-Temperature UV Plus Heat Cure

Product Description

Dymax Multi-Cure 984-LVUF Ultra-Fluorescing Conformal Coating is a one-part, solvent-free conformal coating for electronic assemblies that require a strong inspection signal. UV light cures the low-viscosity material at room temperature, while secondary heat cure develops coating in shadowed areas. After cure, the clear film produces intense blue fluorescence under black light, supporting automated or visual coverage checks. The coating is intended for thin protective layers across lead frames, ceramic, PCB, flex, and silicon surfaces, with chemical and abrasion resistance for in-service assembly protection.

Key features

  • Ultra-Fluorescent Cure Inspection: Intense blue fluorescence supports automated or visual coating detection.
  • Low-Viscosity Thin Coating: The fluid form supports controlled application in thin conformal layers.
  • Light and Secondary Heat Cure: UV cure at room temperature is complemented by heat cure in shadowed areas.

Applications / Suitable for

  • Ultra-fluorescent conformal coating of electronic assemblies
  • Coating coverage inspection by automated or visual systems
Product Family

DYMAX 984-LVUF

Catalog Product

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
AppearanceAppearance
Colorless Transparent Liquid
Chemistry TypeChemistry Type
Acrylated Urethane
Density (g)Density (g)
1.05 g/cm3
Refractive indexRefractive index
1.49
Physical Properties
ViscosityViscosity
160 mPa.s
Mechanical Properties
ElongationElongation
4 %
Chemical Properties
Water AbsorptionWater Absorption
0.2 %
Other Properties
Storage TemperatureStorage Temperature
10 - 32 °C

Additional Information

Technical properties

As-supplied / before-processing properties

As-supplied characteristics used for material and process evaluation. Numerical values are typical unless otherwise identified.

Property Value Unit Method / condition
Component count One-part - As supplied
Solvent content Solvent-free - As supplied
Viscosity 160 cP Typical; as supplied
Rheology Low viscosity - Thin-coating application
Primary cure UV light at room temperature - Directly exposed coating
Secondary cure Heat - Shadowed areas
Technical properties

After-processing / final-state properties

Final-state characteristics after the stated cure or processing condition. Numerical values are typical unless otherwise identified.

Property Value Unit Method / condition
Cured appearance Clear - After cure
Inspection fluorescence Ultra-fluorescent blue - Under black light
Recommended coating thickness 51 to 150 um Applied conformal coating
Light-cure depth 7 mil Direct light exposure
Chemical resistance Resistant - Cured coating; qualitative
Abrasion resistance Resistant - Cured coating; qualitative

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