Product Description
The HumiSeal® 1A33 LOF Urethane Conformal Coating is a single-component polyurethane coating formulated for printed circuit board (PCB) protection. It features curing accelerants, significantly reducing curing times compared to other polyurethane coatings. With high chemical resistance and physical hardness achieved in just 4 hours at 85°C, it ensures superior durability. Designed with reduced odor and low-toxicity solvents, this coating provides a safer application process. Fully RoHS Directive 2015/683 and RoHS 2 compliant, it contains no free isocyanates, toluene, or xylene, making it an environmentally responsible choice for electronics protection.
Features of HumiSeal® 1A33 LOF Urethane Conformal Coating
- Reducing curing time with built-in accelerants for faster processing.
- Providing high chemical resistance for long-term durability.
- Offering strong physical hardness after curing at 85°C for 4 hours.
- Featuring low odor and low-toxicity solvents for safer application.
- Ensuring excellent environmental and moisture protection for PCBs.
- Being free of isocyanates, toluene, and xylene, ensuring RoHS 2015/683 and RoHS 2 compliance.
Applications of HumiSeal® 1A33 LOF Urethane Conformal Coating
- Printed Circuit Board (PCB) Protection: Enhancing durability and performance in harsh environments.
- Electronics & Industrial Coating: Providing strong resistance against chemicals and moisture.
- High-Reliability Applications: Ideal for automotive, aerospace, and industrial electronics.
- Fast Curing Processes: Suitable for high-speed manufacturing environments requiring quick turnaround times.
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: 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.About Prostech
| Property | Value |
|---|---|
| Density (per ASTM D1475, g/cm³) | 0.90 ± 0.04 |
| Solids Content (% by weight, per Fed-Std-141, Meth. 4044) | 44.5 ± 2.5% |
| Viscosity (CPS, per Fed-Std-141, Meth. 4287) | 295 ± 65 |
| VOC (grams/litre) | 488 |
| Recommended Coating Thickness (microns) | 25 – 75 |
| Drying Time to Handle (per Fed-Std-141, Meth. 4061) | 45 minutes @ 25°C |
| Recommended Thinner | Thinner 904, 600 |
| Recommended Stripper | HumiSeal® Stripper 1063 |
| Shelf Life at Room Temperature (DOM) | 12 months |
| Thermal Shock (50 cycles per MIL-I-46058C) | -65°C to 125°C |
| Coefficient of Thermal Expansion (TMA) | 193 ppm/°C |
| Glass Transition Temperature (Tg – DSC) | 26°C |
| Modulus (DMA) | 27.2 MPa |
| Flash Point | 22.5°C *estimated |
| Dielectric Withstand Voltage (per MIL-I-46058C) | >1500 volts |
| Dielectric Breakdown Voltage (per 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 (per MIL-I-46058C) | 2.0 × 10¹⁴ ohms (200TΩ) |
| Moisture Insulation Resistance (per MIL-I-46058C) | 1.6 × 10¹⁰ ohms (16GΩ) |
