1B73 Aerosol

1B73 Aerosol

HumiSeal® 1B73 aerosol conformal coating is:

  • an acrylic chemistry
  • fast drying
  • single component
  • IPC-CC-830 compliant

HumiSeal 1B73 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 1B73 aerosolConformal Coating

  1. Allow 48 hours minimum to reach room temperature before using cans stored or received during cold weather.
  2. 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.
  3. Surface must be cleaned of dirt, wax, grease, flux residues and all similar contaminants for successful application of the coating.
  4. Mask areas not requiring coating from overspray using suitable non-silicone masking methods or materials.
  5. Shake can vigorously before using and repeat frequently during use.
  6. 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.
  7. To clean nozzle after use, hold can upside down, then press nozzle for a few seconds.
Product Specification
Density, per ASTM D1475 0.74 ± 0.02 g/cm³
Solids Content, % by weight per Fed-Std-141, Meth. 4044 7 ± 1 %
VOC 687.5 grams/liter
Drying Time to Handle per Fed-Std-141, Meth. 4061 30 minutes
Recommended Coating Thickness 25 -75 microns
Recommended Curing Conditions 24 hrs @ RT or 2 hrs @ 76°C
Time Required to Reach Optimum Properties 7 days
Recommended Stripper HumiSeal® Stripper 1080, 1080A
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 67 ppm/°C
Glass Transition Temperature – DSC 42°C
Modulus – DMA 11.1 MPa
Flammability, per UL 94 V-0
Dielectric Withstand Voltage, per MIL-I-46058C >1500 volts
Dielectric Breakdown Voltage, per ASTM D149 6300 volts
Dielectric Constant, at 1MHz and 25°C, per ASTM D150-98 2.6
Dissipation Factor, at 1MHz and 25°C, per ASTM D150-98 0.010
Insulation Resistance, per MIL-I-46058C 5.5 x 1014 ohms (550TΩ)
Moisture Insulation Resistance, per MIL-I-46058C 7.0 x 1010 ohms (70GΩ)
Fungus Resistance, per ASTM G21 Passes

Other products in this chemistry include:


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Datasheets:

1B73-Aerosol-TDS

REACH

REACH-Statement

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