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Hayacoat Mark2 EF (undiluted type / fluorescent color / 1kg) (AY-L1003OB)

Original price ¥4,433 - Original price ¥4,433
Original price
¥4,433 - ¥4,433
Current price ¥4,433
(Prices include tax)

Insulation coating agent for substrates with excellent resistance to moisture and corrosive gases

Prices have been revised effective July 1, 2023.

Moisture and corrosion resistant coating agent with excellent gas barrier properties, effective against moisture and corrosive gases. It has excellent insulation properties and improves the insulation reliability of narrow patterns on printed circuit boards, etc. Protects PCBs from salt damage in corrosive gas atmospheres such as hot spring areas and coastal areas. Not regulated by the Ordinance on Prevention of Organic Solvent Poisoning. Two types are available in different contents and six types in different colors.See variations with different contentsSee variations with different colors

Main specifications

Model No.
RoHS directive (10 substances)
1 can
1kg (1.2L)
Product size (including packaging, approx.)
130 x 95 x 190 mm
Weight (including packaging, approx.)
JAN code
Country of origin
Main ingredients
Polyvinyl resin
Pale yellow transparent liquid
Volume resistivity
Dielectric Constant
3.4 (1MHz)
Dissipation Factor
Dielectric breakdown strength
Pencil hardness
Copper plate corrosion test
No discoloration (room temperature, 500h)
100/100 (Cross-cut method on copper foil plate)
Transmission humidity
<0.25 (g/m)2D, 100 μm)
Sulfurous acid gas resistance test
No corrosion on copper foil surface (30±2ppm, 48h)
Hydrogen sulfide gas resistance test
No corrosion on copper foil 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 change in insulation resistance (120°C, 500h)
21 mPa-s (20°C)
Specific gravity
Continuous operating temperature range
Hazardous material and content under the Fire Service Law
Class 4 Petroleum No. 1 (non-water soluble) 1.2L
Alcohol odor
Approximate area that can be applied
10m2(2 coats/10μm at the rate described in the technical data)
Flame retardant
UL94 V-0 certified


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