Product Introduction
HumiSeal® 1A33NS is a toluene-free, high-quality polyurethane-based conformal coating designed for general PCB applications. This product provides exceptional chemical resistance and is ideal for use in challenging environments.
HumiSeal® 1A33NS Features:
- Toluene-free formulation for safer handling.
- UV fluorescence for easy inspection.
- RoHS compliant.
- No free isocyanates for safety.
HumiSeal® 1A33NS Applications:
- General PCB applications in electronics.
- Long-lasting protection from environmental hazards.
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?
| 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 |
