1A33 Aerosol
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 1A33 aerosolConformal 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.
| 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 1014 ohms (200TΩ) |
| Moisture Insulation Resistance, per MIL-I-46058C | 1.2 x 1010 ohms (12GΩ) |
| CTI, PLC per UL746E @ 600 volts | 0 |
| Recommended Stripper | Humiseal® Stripper 1063 |
Other products in this chemistry include:
