2K350 Two Part Conformal Coating

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K350 is a flame-retardent, solvent-free two-part polyurethane conformal coating. It has been carefully formulated to combine the protection and properties of an encapsulation resin, while keeping the ease of application of a conformal coating.

2K350 is formulated for application using specially designed applicators from both PVA (VPX-2KS) and Nordson Asymtek (Latest in the AM Range) selective coating machines. 2K350 is applied more thickly than the average coating (100-300μm), it provides excellent coverage over component leads and packages, while its extreme flexibility prevents cracking during thermal shock testing.

2K350 offers enhanced thermal performance when compared to the general purpose 2K100 with an operating range of -65 to +130°C while still offering good chemical resistance and meeting UL94 V-0 flame retardant requirements.


Approvals RoHS Compliant (2015/863/EU): Yes
REACH Compliant: Yes
IPC-CC-830 Rev. C: Meets Requirements
Liquid Properties Appearance: Opaque Blue Liquid
Density @ 20°C: 1.12 g/ml (mixed)
Flash Point: >100⁰C
Min. Solids Content (1hr @80˚C): >98.5%
Mix Ratio: 9:1 v/v
Viscosity (mixed) @ 25°C: Sprayable
Useable Life @ 20°C: 40 Minutes
Touch Dry Time at 20°C: 240 Minutes
Recommended Drying Time: 10 Minutes @ 80°C
Dry Film Coating Colour: Blue Opaque
Recommended Coating Thickness: 100-300µm
Temperature Range: -65 to +130⁰C
Thermal Shock Range: -65 to +130⁰C
Thermal Shock (1000 cycles): No cracking, blistering or delamination*
Shore Hardness: A50-60
Elongation at Break (BS EN ISO 537): 100%
Tensile Strength (BS EN ISO 537): 4.6 MPa @ 20˚C
Elastic Modulus (BS EN ISO 537): 1.5 MPa @ 20˚C
Dielectric Strength: 90 kV/mm
Surface Insulation Resistance: 9 x 1015 Ω
Moisture Resistance (IPC-CC-830): 9.9 x 109 Ω
Flammability: Self-extinguishing

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