HumiSeal® 1B31LOC is a low VOC solvent-based conformal coating that complies with most North American air quality regulations. It is a fast-drying, single-component acrylic coating designed to provide excellent moisture and environmental protection for printed circuit assemblies. HumiSeal® 1B31LOC offers superior flexibility, excellent electrical properties, and fluoresces under UV light, making inspection easy. Additionally, it is easily repaired, making it a versatile solution for various applications.
This coating is MIL-I-46058C qualified and complies with IPC-CC-830 and RoHS Directive 2002/95/EC, ensuring top-quality standards.
Highlight Features:
- excellent moisture and environmental protection for printed circuit assemblies
- fluorescence under UV light for ease of inspection
- reworkability with ease
- MIL-I-46058C qualification
- IPC-CC-830 compliance
- RoHS directive 2015/863/EU
Application of HumiSeal® 1B31LOC
The cleanliness of the substrate is crucial for the successful application of HumiSeal® 1B31LOC. The surface must be completely free of moisture, dirt, wax, grease, flux residues, and other contaminants. Any contamination under the coating can lead to potential assembly failures.
Make sure to choose HumiSeal® 1B31LOC for optimal protection and reliability in your printed circuit assemblies.
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
| Density, per ASTM D1475 | 1.20 ± 0.03 g/cm3 |
| Solids Content, % by weight per Fed-Std-141, Meth. 4044 | 25 ± 3 % |
| Viscosity, per Fed-Std-141, Meth. 4287 | 450 ± 25 centipoise |
| VOC | 91 grams/litre |
| Drying Time to Handle per Fed-Std-141, Meth. 4061 | 25 minutes |
| Recommend Coating Thickness | 25 – 75 microns |
| Recommended Curing Conditions | 24 hrs @ RT or 30 min @ 76°C |
| Time Required to Reach Optimum Properties | 7 days |
| Recommended Thinner | HumiSeal Thinner 701 |
| Recommended Stripper | HumiSeal Stripper 1080, 1080EU |
| 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 | 170 ppm/°C below Tg340 ppm/°C above Tg |
| Glass Transition Temperature – DSC | 14°C |
| Modulus – DMA | 2000 MPa @ -40°C1050 MPa @ 20°C |
| 8.5 MPa @ 60°C | |
| Flammability, per MIL-I-46058C | Self-Extinguishing |
| 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 | 2.5 |
| Dissipation Factor, at 1MHz and 25°C per ASTM D150-98 | 0.01 |
| Insulation Resistance, per MIL-I-46058C | 8.0 x 1014 ohms (800TΩ) |
| Moisture Insulation Resistance, per MIL-I-46058C | 7.0 x 1010 ohms (60GΩ) |
| Fungus Resistance, per ASTM G21 | Passes |
