HumiSeal® 1B66 is a fast drying, single component, acrylic conformal coating that provides excellent moisture and environmental protection for printed circuit assemblies. HumiSeal® 1B66 demonstrates outstanding flexibility and is easily repaired. HumiSeal® 1B66 coating is RoHS Directive 2002/95/EC compliant.
Typical Properties
Product Specification
Density, per ASTM D1475
0.91 ± .02 g/cm3
Solids Content, % by weight per Fed-Std-141, Meth. 4044
35 ± 3 %
Viscosity, per Fed-Std-141, Meth. 4287
200 ± 15 centipoise
VOC
592 grams/litre
Drying Time to Handle per Fed-Std-141, Meth. 4061
10 minutes
Recommended Coating Thickness
25 – 75 microns
Recommended Curing Conditions
24hrs @ RT or 30min @ 76°C
Time Required to Reach Optimum Properties
7 days
Recommended Thinner (dipping & brushing)
HumiSeal Thinner 503
Recommended Thinner (spraying)
HumiSeal Thinner 521
Recommended Stripper
HumiSeal Stripper 1080
Shelf Life at Room Temperature, DOM
24 months
Thermal Shock, 50 cycles per MIL-I-46058C
-65°C to 125°C
Coefficient of Thermal Expansion – TMA
175 ppm/°C below Tg
345 ppm/°C above Tg
Glass Transition Temperature – DSC
14°C
Modulus – DMA
850 MPa @ 40°C
Dielectric Withstand Voltage, per MIL-I-46058C
>1500 volts
Dielectric Breakdown Voltage, per ASTM D149
7500 volts
Dielectric Constant, at 1MHz and 25°C per ASTM D150-98
2.5
Dissipation Factor, at 1MHz and 25°C per ASTM D150-98
