HumiSeal® 1B66 is a fast-drying, single-component acrylic conformal coating designed to provide superior moisture and environmental protection for printed circuit assemblies. This coating demonstrates excellent flexibility, making it ideal for various applications, and is easily repairable. HumiSeal® 1B66 is RoHS Directive 2015/863/EU compliant, ensuring it meets environmental safety standards.
Key Features of HumiSeal® 1B66:
- Acrylic chemistry
- Fast drying
- Single component
- Compatible with various thinner types for different application environments
- Excellent moisture and environmental protection
- High flexibility
- Fluorescence under UV light for easy inspection
- Easy reworkability for repairs
- IPC-CC-830 compliance
- RoHS Directive 2015/863/EU compliant
Application of HumiSeal® 1B66 Conformal Coating
HumiSeal® 1B66 can be applied to cleaned substrates or those assembled with low-residue “no clean” materials. Proper testing should be conducted to ensure compatibility with assembly materials and process conditions. Contact HumiSeal technical support for more details on usage.
Choose HumiSeal® 1B66 for reliable protection and flexible performance 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.
| Product Specification | |
| Density, per ASTM D1475 | 0.91 ± .02 g/cm3 |
| Solids Content, % by weight per Fed-Std-141, Meth. 4044 | 35 ± 3 % |
| Viscosity, per Fed-Std-141, Meth. 4287 | 200 ± 15 centipoise |
| VOC | 592 grams/litre |
| Drying Time to Handle per Fed-Std-141, Meth. 4061 | 10 minutes |
| Recommended Coating Thickness | 25 – 75 microns |
| Recommended Curing Conditions | 24hrs @ RT or 30min @ 76°C |
| Time Required to Reach Optimum Properties | 7 days |
| Recommended Thinner (dipping & brushing) | HumiSeal Thinner 503 |
| Recommended Thinner (spraying) | HumiSeal Thinner 521 |
| Recommended Stripper | HumiSeal Stripper 1080 |
| 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 | 175 ppm/°C below Tg |
| 345 ppm/°C above Tg | |
| Glass Transition Temperature – DSC | 14°C |
| Modulus – DMA | 850 MPa @ 40°C |
| 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 1012 ohms (800TΩ) |
| Moisture Insulation Resistance, per MIL-I-46058C | 6.0 x 1010 ohms (60GΩ) |
| Fungus Resistance, per ASTM G21 | Passes |
