Aerosol 1A33

Model No:	1A33

HumiSeal® 1A33 Aerosol Conformal Coating is a one component, fast curing, urethane coating that is used for circuit board applications. It is environmentally safe and fluoresces under UV light to aid inspection.

Product Enquiry

HumiSeal® 1A33 aerosol conformal coating is:

urethane chemistry
fast drying
single component
IPC-CC-830 compliant
UL file number E105698

HumiSeal® 1A33 aerosol conformal coating has:

excellent moisture and environmental protection for printed circuit assemblies
excellent flexibility
fluorescence under UV light for ease of inspection
reworkability with ease
RoHS Directive 2011/65/EC compliance

Application of HumiSeal® 1A33 aerosol Conformal Coating

Allow 48 hours minimum to reach room temperature before using cans stored or received during cold weather.
When applied in conditions of high ambient humidity, blushing (cloudy white film) may appear. Heating the coated assembly in an oven for 1/2 hour at 76°C eliminates this condition.
Surface must be cleaned of dirt, wax, grease, flux residues and all similar contaminants for successful application of the coating.
Mask areas not requiring coating from overspray using suitable non-silicone masking methods or materials.
Shake can vigorously before using and repeat frequently during use.
Best results are obtained by spraying from a distance of 30 – 40 cm in light even coats. A film thickness of 25 – 75 microns is sufficient to provide protection.
To clean nozzle after use, hold can upside down, then press nozzle for a few seconds.

Specification:

Product Specification
Solids Content, % by weight per Fed-Std-141, Meth. 4044	12 ± 1 %
VOC	462 grams/liter
Recommended Coating Thickness	25 – 75 microns
Drying Time to Handle per Fed-Std-141, Meth. 4061	10 minutes
Time Required to Reach Optimum Properties	30 days @ RT, 30 hours @ 76°C, 20 hours @ 88°C
Shelf Life, DOM	24 months
Thermal Shock, 50 cycles per MIL-I-46058C	-65°C to 125°C
Coefficient of Thermal Expansion – TMA	170 ppm/°C
Glass Transition Temperature – DSC	28°C
Modulus – DMA	18.1 MPa
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	0.03
Insulation Resistance, per MIL-I-46058C	2.0 x 10¹⁴ohms (200TΩ)
Moisture Insulation Resistance, per MIL-I-46058C	1.2 x 10¹⁰ohms (12GΩ)
CTI, PLC per UL746E @ 600 volts	0
Recommended Stripper	Humiseal® Stripper 1063