HumiSeal® 1A34 is a high-performance polyurethane conformal coating designed to provide exceptional protection for printed circuit board (PCB) assemblies. Known for its fast curing time and ease of application, HumiSeal® 1A34 is a trusted solution in the electronics industry. This single-component coating is compatible with Thinner 521/521 EU and complies with global standards, ensuring reliability and safety.
Product Features
- Urethane Chemistry: Offers robust and durable performance.
- Chemical Resistance: Protects PCBs from harsh chemicals and environmental factors.
- Single-Component Solution: Simplifies application, requiring no mixing or preparation.
- Fast Curing: Speeds up the coating process for increased efficiency.
- UV Fluorescence: Allows for quick and accurate inspection under UV light.
- Thinner 521/521 EU Compatible: Enhances flexibility and ease of application.
- MIL-I-46058C Qualified: Meets military-grade coating standards.
- IPC-CC-830 Compliant: Adheres to industry quality benchmarks.
- RoHS Directive 2015/863/EU Compliance: Demonstrates environmental responsibility.
Why Choose HumiSeal® 1A34?
HumiSeal® 1A34 is engineered to deliver outstanding moisture and environmental protection, making it ideal for safeguarding PCBs in demanding applications. Its compliance with MIL-I-46058C, IPC-CC-830, and RoHS Directive 2002/95/EC highlights its reliability and industry-leading performance. The added benefit of UV fluorescence ensures efficient inspection processes, while its compatibility with Thinner 521/521 EU makes it versatile and easy to handle.
Protect your PCBs with HumiSeal® 1A34—the trusted choice for durability, compliance, and efficiency in conformal coatings.
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 | 0.95 ± 0.02 g/cm3 |
| Solids Content, % by weight per Fed-Std-141, Meth. 4044 | 39 ± 2 % |
| Viscosity, per Fed-Std-141, Meth. 4287 | 125 ± 75 centipoise |
| VOC | 576 grams/litre |
| Recommended Coating Thickness | 25 -75 microns |
| Drying Time to Handle per Fed-Std-141, Meth. 4061 | 120 ± 30 minutes |
| Recommended Curing Conditions | 24 hrs @ RT or 4 hrs @ 76°C |
| Time Required to Reach Optimum Properties | 7 days |
| Thinner, if needed (dipping, brushing, spraying) | HumiSeal® Thinner 521, 521EU |
| Recommended Stripper | HumiSeal® Stripper 1072 |
| Shelf Life at Room Temperature, DOM | 6 months |
| Thermal Shock, per MIL-I-46058C | -65°C to 125°C |
| Coefficient of Thermal Expansion – TMA | 260 ppm/°C |
| Glass Transition Temperature – DSC | 18°C |
| Modulus – DMA | 51.3 MPa |
| Flammability, per MIL-I-46058C | Self-Extinguishing |
| Dielectric Withstand Voltage, per MIL-I-46058C | >1500 volts |
| Dielectric Constant, at 1MHz and 25°C per ASTM D150-98 | 3.5 |
| Dissipation Factor, at 1MHz and 25°C per ASTM D150-98 | 0.028 |
| Insulation Resistance, per MIL-I-46058C | 1.7 x 1014 ohms (170TΩ) |
| Moisture Insulation Resistance, per MIL-I-46058C | 6.3 x 1010 ohms (63GΩ) |
| Fungus Resistance, per ASTM G21 | Passes |
