HumiSeal® 1A33NS is a high-quality polyurethane-based conformal coating designed to deliver superior protection for printed circuit board (PCB) assemblies. This toluene-free, single-component coating is ideal for general PCB applications, offering exceptional chemical resistance and compliance with global safety standards. Its unique UV fluorescence feature ensures easy inspection, making it a reliable choice for professionals.
Product Features
- Urethane Chemistry: Provides robust and long-lasting protection.
- Toluene-Free Formula: Safer for users and the environment.
- Chemical Resistance: Shields PCBs from harsh chemicals and challenging conditions.
- Single-Component Solution: Simplifies application with no need for mixing.
- Fluorescence Under UV Light: Allows quick and precise inspection.
- No Free Isocyanates: Ensures environmental and user safety.
- RoHS Directive 2015/863/EU Compliance: Meets modern environmental standards.
- UL Recognition: Certified under UL File Number E105698 for trusted performance.
Why Choose HumiSeal® 1A33NS?
HumiSeal® 1A33NS offers outstanding moisture and environmental protection, making it the ideal solution for safeguarding PCBs in demanding applications. Its toluene-free formulation and RoHS Directive 2002/95/EC compliance demonstrate its commitment to safety and environmental responsibility. Additionally, the UV fluorescence feature streamlines inspection processes, ensuring efficiency and accuracy.
For reliable, high-performance protection, HumiSeal® 1A33NS is the ultimate conformal coating solution for PCB professionals.
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.
| Property | Value |
| Density (ASTM D1475) | 0.95 ± 0.02 g/cm³ |
| Solids Content (% by weight, Fed-Std-141, Meth. 4044) | 44 ± 2 % |
| Viscosity (Fed-Std-141, Meth. 4287) | 180 ± 20 centipoise |
| VOC | 521 grams/litre |
| Recommended Coating Thickness | 25 – 75 microns |
| Drying Time to Handle (Fed-Std-141, Meth. 4061) | 15 minutes |
| Optional Curing Conditions to Reach Optimum Properties | 30 days at RT, 30 hours @ 76°C, 20 hours @ 88°C |
| Recommended Thinner | HumiSeal® Thinner 521 |
| Recommended Stripper | HumiSeal® Stripper 1063 |
| Shelf Life at Room Temperature (from DOM) | 24 months |
| Thermal Shock (50 cycles, MIL-I-46058C) | -65°C to 125°C |
| Coefficient of Thermal Expansion (TMA) | 193 ppm/°C |
| Glass Transition Temperature (DSC) | 26°C |
| Modulus (DMA) | 27.2 MPa |
| Dielectric Withstand Voltage (MIL-I-46058C) | >1500 volts |
| Dielectric Breakdown Voltage (ASTM D149) | 7500 volts |
| Dielectric Constant (1MHz, 25°C, ASTM D150-98) | 3.6 |
| Dissipation Factor (1MHz, 25°C, ASTM D150-98) | 0.03 |
| Insulation Resistance (MIL-I-46058C) | 2.0 × 10¹² ohms (200TΩ) |
| Moisture Insulation Resistance (MIL-I-46058C) | 1.6 × 10⁹ ohms (16GΩ) |
| Fungus Resistance (ASTM G21) | Passes |
