-Item Name: HumiSeal® 2A64
-Manufacturer: HumiSeal
-Technologies: Two-component polyurethane conformal coating
-Color: Fluoresces under UV light
-Cure Type: 3 hours at 76°C
-Package Size: Contact Techniq VN for details.
-Shelf Life: 12 months
HumiSeal® 2A64 is a two-component polyurethane conformal coating designed for printed circuit board (PCB) protection. It has high solids, low viscosity for easy application, and fluoresces under UV light for inspection. The coating is MIL-I-46058C qualified, IPC-CC-830 compliant, and meets RoHS Directive 2011/65/EC.
| Property | Value | Standard |
|---|---|---|
| Density | 1.07 ± 0.03 g/cm³ | ASTM D1475 |
| Solids Content | 55 ± 5 % | Fed-Std-141, Meth. 4044 |
| Viscosity | 130 ± 50 centipoise | Fed-Std-141, Meth. 4287 |
| VOC Content | 501 g/L | – |
| Coating Thickness | 25 – 75 microns | – |
| Drying Time to Handle | 15 minutes | Fed-Std-141, Meth. 4061 |
| Curing Condition | 3 hrs @ 76°C | – |
| Pot Life | 8 hours | – |
| Shelf Life | 12 months | – |
| Thermal Shock | -65°C to 125°C | MIL-I-46058C |
| CTE (Coefficient of Thermal Expansion) | 82 ppm/°C (Below Tg) / 255 ppm/°C (Above Tg) | – |
| Glass Transition Temperature (Tg) | 12°C | DSC |
| Modulus | 4101 MPa @ -40°C, 2777 MPa @ 25°C, 2 MPa @ 80°C | DMA |
| Flammability | Self-Extinguishing | MIL-I-46058C |
| Dielectric Withstand Voltage | >1500 volts | MIL-I-46058C |
| Dielectric Breakdown Voltage | 3500 volts | ASTM D149 |
| Dielectric Constant (1MHz, 25°C) | 3.5 | ASTM D150-98 |
| Dissipation Factor (1MHz, 25°C) | 0.024 | ASTM D150-98 |
| Insulation Resistance | 4.5 × 10¹⁴ Ω | MIL-I-46058C |
| Moisture Insulation Resistance | 4.8 × 10¹⁰ Ω | MIL-I-46058C |
| Fungus Resistance | Passes | ASTM G21 |
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