Product Introduction
HumiSeal® 1A20 is a high-performance, single-component polyurethane conformal coating offering exceptional chemical resistance. It is designed for PCB assemblies in harsh environments and meets industry standards for safety and performance.
HumiSeal® 1A20 Features:
- Urethane-based chemistry for long-lasting protection.
- UV fluorescence for easy inspection.
- MIL-I-46058C, IPC-CC-830, and RoHS compliant.
HumiSeal® 1A20 Applications:
- PCB protection in military-grade applications.
- Electronics requiring superior durability and fast curing.
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 (per ASTM D1475) | 1.02 ± 0.02 g/cm³ |
| Solids Content (% by weight, per Fed-Std-141, Meth. 4044) | 50 ± 3 % |
| Viscosity (per Fed-Std-141, Meth. 4287) | 100 ± 30 centipoise |
| VOC | 511 grams/litre |
| Recommended Coating Thickness | 25 - 75 microns |
| Drying Time to Handle (per Fed-Std-141, Meth. 4061) | 60 minutes |
| Recommended Curing Conditions | 24 hrs @ RT or 3 hrs @ 76°C |
| Time Required to Reach Optimum Properties | 7 days |
| Thinner (if needed, for 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) | 515 ppm/°C |
| Glass Transition Temperature (DSC) | 71°C |
| Modulus (DMA) | 89.6 MPa |
| Flammability (per UL 94) | V-0 |
| 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) | 3.0 x 10¹⁴ ohms (300TΩ) |
| Moisture Insulation Resistance (per MIL-I-46058C) | 4.8 x 10¹⁰ ohms (48GΩ) |
| Fungus Resistance (per ASTM G21) | Passes |
| Resistance to Chemicals | Excellent |
