HumiSeal - 1A27 Urethane Conformal Coating

ID PCHU1A27
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HumiSeal™ 1A27 is a single component, polyurethane conformal coating, suitable for general printed circuit board applications. HumiSeal™ 1A27 contains no free isocyanates. HumiSeal™ 1A27 coating is RoHS Directive 2002/95/EC compliant and recognized under UL File Number E105698. Cleanliness of the
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Description

HumiSeal™ 1A27 is a single component, polyurethane conformal coating, suitable for general printed circuit board applications. HumiSeal™ 1A27 contains no free isocyanates. HumiSeal™ 1A27 coating is RoHS Directive 2002/95/EC compliant and recognized under UL File Number E105698.

Cleanliness of the substrate is of extreme importance for the successful application of a conformal coating. Surfaces must be free of moisture, dirt, wax, grease, flux residues and all other contaminants. Contamination under the coating could cause problems that may lead to assembly failures.

Product Specification
Density, per ASTM D1475 0.96 ± 0.02 g/cm³
Solids Content, % by weight per Fed-Std-141, Meth. 4044 50 ± 3 %
Viscosity, per Fed-Std-141, Meth. 4287 3000 ± 1000 centipoise
VOC 480 grams/litre
Recommended Coating Thickness 25 – 75
Drying Time to Handle per Fed-Std-141, Meth. 4061 30 minutes
Optional Curing Conditions to Reach Optimum Properties 30 days at RT30 hours @ 76°C20 hours @ 88°C
Recommended Thinner (spraying) HumiSeal Thinner 521
Recommended Stripper HumiSeal Stripper 1063
Shelf Life at Room Temperature, DOM 24 months
Thermal Shock, 50 cycles per MIL-I-46058C -65° to 125°C
Coefficient of Thermal Expansion – TMA 170 ppm/°C
Glass Transition Temperature – DSC 28°C
Modulus – DMA 18.1 MPa
Flammability, per UL 94 V-0
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 3.6
Dissipation Factor, at 1MHz and 25°C per ASTM D150-98 0.02
Insulation Resistance, per MIL-I-46058C 2.0 x 1014 ohms(200TO)
Moisture Insulation Resistance, per MIL-I-46058C 1.2 x 1010 ohms (12GO)

Technical Data Sheet (TDS): 1A27 || Aerosol || || 1A27 LU
Material Safety Data Sheet (MSDS): 1A27 || Aerosol || 1A27 LU

*Actual product colours may vary from on-screen and printed representations.
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