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HumiSeal 1A33 is a single component, polyurethane conformal coating, suitable for general printed circuit board applications. HumiSeal 1A33 contains no free isocyanates and fluoresces under UV light for inspection purposes. HumiSeal 1A33 coating is MIL-I-46058C qualified, IPC-CC-830B and RoHS Directive 2011/65/EC compliant, and recognized under UL File Number E105698.
FEATURES:
Density, per ASTM D1475 | 0.95 ± 0.02 g/cm³ |
Solids Content, % by weight per Fed-Std-141, Meth. 4044 | 44 ± 2 % |
Viscosity, per Fed-Std-141, Meth. 4287 | 180 ± 20 centipoise |
Recommended Coating Thickness | 25 – 75 microns |
Drying Time to Handle per Fed-Std-141, Meth. 4061 | 15 minutes |
Optional Curing Conditions to Reach Optimum Properties | 30 days at RT |
Thermal Shock, 50 cycles per MIL-I-46058C | -65°C to 125°C |
Coefficient of Thermal Expansion – TMA | 193 ppm/°C |
Glass Transition Temperature – DSC | 26°C |
Flammability, per UL 94 | V-0 |
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