HumiSeal® 1C49LV is a moisture-curing, low-viscosity, VOC-free silicone conformal coating that provides excellent protection for printed circuit assemblies against moisture and environmental factors. It is solvent-free, highly flexible, repairable, and fluoresces under UV light for inspection. The coating can be cured at room temperature or accelerated at elevated temperatures. It meets MIL-I-46058C, IPC-CC-830, and RoHS Directive 2011/65/EU compliance and is UL recognized under File Number E105698.
| Property | Value |
|---|---|
| Density (ASTM D1475) | 0.97 ± 0.03 g/cm³ |
| Solids Content (Fed-Std-141, Meth. 4044) | 90% min. |
| Viscosity (Fed-Std-141, Meth. 4287) | 550 ± 250 cP |
| VOC Content | 0 g/L |
| Recommended Coating Thickness | 50 – 200 microns |
| Drying Time to Handle (Fed-Std-141, Meth. 4061) | 60 min |
| Recommended Curing Conditions | 24 hrs @ RT or 20 min @ 76°C* |
| Time to Reach Optimum Properties | 7 days |
| Recommended Stripper | HumiSeal® Stripper 1091 |
| Shelf Life at Room Temperature | 12 months |
| Thermal Shock Resistance (MIL-I-46058C) | -65°C to 200°C |
| Coefficient of Thermal Expansion (TMA) | 323 ppm/°C above Tg |
| Glass Transition Temperature (DSC) | < -65°C |
| Modulus (DMA) | 9.0 MPa @ -40°C, 3.8 MPa @ 25°C, 3.2 MPa @ 80°C |
| Tensile Strength (ASTM D-412) | 30-50 psi |
| Elongation (ASTM D-412) | 80-120% |
| Flammability (UL94) | V-0 |
| Dielectric Withstand Voltage (MIL-I-46058C) | >1500 volts |
| Dielectric Breakdown Voltage (ASTM D149) | 7000 volts |
| Dielectric Constant (ASTM D150-98, 1MHz, 25°C) | 2.5 |
| Dissipation Factor (ASTM D150-98, 1MHz, 25°C) | 0.01 |
| Insulation Resistance (MIL-I-46058C) | 5.0 x 10¹⁴ ohms (500TΩ) |
| Moisture Insulation Resistance (MIL-I-46058C) | 1.0 x 10¹⁰ ohms (10GΩ) |
| Fungus Resistance (ASTM G21) | Passes |
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