Product Introduction
HumiSeal® 1A34 is a fast-curing, high-performance polyurethane conformal coating designed for printed circuit board (PCB) assemblies. Known for its UV fluorescence and chemical resistance, it’s a trusted solution for the electronics industry.
HumiSeal® 1A34 Features:
- Fast curing for high-efficiency application.
- Single-component, no mixing required.
- UV fluorescence for easy inspection.
- MIL-I-46058C and RoHS compliant.
HumiSeal® 1A34 Applications:
- PCB protection from chemicals and environmental factors.
- Electronics industry for long-term reliability.
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
Need help selecting the right product or solution?
| 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 |
