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Hayacoat UV(Clear/250g) (AU-L250OB)

Original price ¥10,648 - Original price ¥10,648
Original price
¥10,648 - ¥10,648
Current price ¥10,648
(Prices include tax)

Solvent-free HAYAKOAT UV for VOC control

Prices have been revised effective July 1, 2023.

This is a UV-curable insulating coating agent with excellent resistance to moisture and corrosive gases. It contains a fluorescent agent that reacts to black light, making it easy to visually check the coated area. Since it is a UV curable type, it cures in a few seconds to a few dozen seconds, enabling a significant reduction in working time. The formed coating film has excellent insulation properties and improves the insulation reliability of narrow patterns on printed circuit boards. Protects PCBs from salt damage in corrosive gas atmospheres such as hot spring areas and coastal areas. Four variations are available in different content volumes and colors.Hayacoat UVSee the variation of

Main specifications

Model No.
RoHS directive (10 substances)
1 piece
250g (210ml)
Product size (including packaging, approx.)
Φ63 x 120mm
Weight (including packaging, approx.)
JAN code
Country of origin
Main ingredients
Acrylate resin
Clear colorless viscous liquid
Volume resistivity
Dielectric Constant
4.1 (1MHz)
Dissipation Factor
Dielectric breakdown strength
Copper plate corrosion test
No discoloration (room temperature, 24h)
100/100 (Cross-cut method on copper foil plate)
Transmission humidity
40.9 (g/m)2D, 100 μm)
Sulfurous acid gas resistance test
No corrosion on copper plate surface (30±2ppm, 48h)
Hydrogen sulfide gas resistance test
No corrosion on copper plate surface (30±6ppm, 48h)
Heat and humidity resistance test
No corrosion on copper foil surface (80°C, 90%, 168h)
Thermal shock test
No peeling or cracking (-40°C to 125°C, 100 cycles)
High temperature test
No effect on insulation resistance and permeation humidity (150°C, 240h)
2100 mPa-s (20°C)
Specific gravity
Continuous operating temperature range
Hazardous Materials and Content under Fire Service Law
Class 4 Petroleums No. 3 (non-water soluble) 210ml
Acrylic odor
Curing Time
Reference condition] High-pressure mercury lamp: 5mW/cm2 20 seconds, LED UV365nm: 2600mW/cm2 5 sec.
Approximate area that can be applied
Approx. 5m in case of 40μm film thickness2


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