Product Introduction
HumiSeal® 1A27 is a high-performance polyurethane-based conformal coating designed for PCB assemblies in demanding environments. It offers robust chemical resistance and is recognized for its durability and ease of application.
HumiSeal® 1A27 Features:
- Advanced urethane chemistry for exceptional durability.
- UL recognized and RoHS compliant.
- Thinner 521 compatibility for versatile application.
HumiSeal® 1A27 Applications:
- PCB protection in extreme environments.
- Long-term protection against chemicals and moisture.
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.
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| Property | Value |
| Density (ASTM D1475) | 0.96 ± 0.02 g/cm³ |
| Solids Content (% by weight, Fed-Std-141, Meth. 4044) | 50 ± 3 % |
| Viscosity (Fed-Std-141, Meth. 4287) | 3000 ± 1000 centipoise |
| VOC | 480 grams/litre |
| Recommended Coating Thickness | 25 - 75 microns |
| Drying Time to Handle (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 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) | 170 ppm/°C |
| Glass Transition Temperature (DSC) | 28°C |
| Modulus (DMA) | 18.1 MPa |
| Flammability (UL 94) | V-0 |
| 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) | 0.02 |
| Insulation Resistance (MIL-I-46058C) | 2.0 × 10¹⁴ ohms (200TΩ) |
| Moisture Insulation Resistance (MIL-I-46058C) | 1.2 × 10¹⁰ ohms (12GΩ) |
