Product Description
The HumiSeal® 1A33LOS Conformal Coating is a single-component polyurethane coating designed for printed circuit board (PCB) protection. Developed as a low-odor, low-toxicity version of HumiSeal® 1A33, it provides the same high-performance protection while improving user safety and workplace conditions. This coating fluoresces under UV light for easy inspection and is free of isocyanates, ensuring environmental compliance. Fully RoHS Directive 2015/863/EU and China RoHS 2 compliant, it is ideal for general PCB applications requiring strong chemical and environmental resistance.
Features of HumiSeal® 1A33LOS Conformal Coating
- Reducing odor levels and utilizing lower toxicity solvents for safer application.
- Providing strong environmental and chemical protection for PCB components.
- Ensuring excellent moisture resistance for long-term reliability.
- Fluorescing under UV light for easy quality inspection.
- Containing no free isocyanates, making it an eco-friendly choice.
- Meeting RoHS Directive 2015/863/EU and China RoHS 2 compliance standards.
HumiSeal® 1A33LOS Polyurethane Conformal Coating
- Printed Circuit Board (PCB) Protection: Offering long-lasting durability and moisture resistance.
- Electronics & Industrial Coating: Ensuring chemical resistance in harsh environments.
- Automotive & Aerospace Electronics: Providing enhanced protection against environmental stressors.
- Workplace-Safe Coating Applications: Ideal for settings requiring low odor and low toxicity solutions.
- Optimized for HumiSeal® 1A33LOS, this polyurethane conformal coating delivers excellent chemical resistance, strong adhesion, and safer application, making it an ideal solution for PCB and electronics protection.
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) | 0.92 ± 0.02 |
| Solids Content (% by weight, per Fed-Std-141, Meth. 4044) | 44 ± 2% |
| Viscosity (CPS, per Fed-Std-141, Meth. 4287) | 195 ± 65 |
| VOC (grams/litre) | 512 |
| Recommended Coating Thickness (microns) | 25 – 75 |
| Drying Time to Handle (per Fed-Std-141, Meth. 4061) | 30 minutes |
| Optional Curing Conditions to Reach Optimum Properties | 30 days at RT, 30 hours @ 76°C, 20 hours @ 88°C |
| Recommended Thinner | HumiSeal® Thinner 905 |
| Recommended Stripper | HumiSeal® Stripper 1063 |
| 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) | 193 ppm/°C |
| Glass Transition Temperature (Tg – DSC) | 26°C |
| Modulus (DMA) | 27.2 MPa |
| Flammability (per UL 94) | Pending |
| Dielectric Withstand Voltage (per MIL-I-46058C) | >1500 volts |
| Insulation Resistance (per MIL-I-46058C) | 2.0 × 10¹⁴ ohms (200TΩ) |
| Moisture Insulation Resistance (per MIL-I-46058C) | 1.6 × 10¹⁰ ohms (16GΩ) |
