Product Introduction
HumiSeal® 1A27 LTX is a single-component polyurethane conformal coating, designed for PCB protection. It complies with GB30981-2020 standards and offers superior protection against moisture, corrosion, and contaminants. This isocyanate-free coating is perfect for high-reliability electronics applications.
HumiSeal® 1A27 LTX Features
- Protects PCBs from moisture and corrosive environments
- Low moisture vapor permeability for enhanced durability
- Meets GB30981-2020 compliance standards for VOC and solvent limits
HumiSeal® 1A27 LTX Applications
- PCB Protection for electronics in industrial and automotive sectors
- Suitable for selective coating processes with various automated application methods
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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Liquid Coating Properties
| Property | Value |
|---|---|
| Density (per ASTM D1475, g/cm³) | 0.93 ± 0.02 |
| Solids Content (% by weight, per Fed-Std-141, Meth. 4044) | 50 ± 3% |
| Viscosity (CPS, per Fed-Std-141, Meth. 4287) | 1500 to 4000 |
| VOC (grams/litre) | 480 |
| Drying Time to Handle (per Fed-Std-141, Meth. 4061) | 30 minutes |
| Recommended Thinner | HumiSeal® Thinner 789, 600 |
| Shelf Life at Room Temperature (DOM) | 24 months |
Cured Coating Properties
| Property | Value |
|---|---|
| Recommended Coating Thickness (microns) | 25 - 75 |
| Optional Curing Conditions to Reach Optimum Properties | 30 days @ RT, 30 hours @ 76°C, 20 hours @ 88°C |
| Recommended Stripper | HumiSeal® Stripper 1063 |
| Thermal Shock (50 cycles per MIL-I-46058C) | -65°C to 125°C |
| Coefficient of Thermal Expansion (TMA) | 170 ppm/°C |
| Glass Transition Temperature (Tg - DSC) | 28°C |
| Modulus (DMA) | 18.1 MPa |
| Flammability (per UL 94) | V-0 |
| Dielectric Withstand Voltage (per MIL-I-46058C) | >1500 volts |
| Dielectric Breakdown Voltage (per 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 (per MIL-I-46058C) | 2.0 × 10¹⁴ ohms (200TΩ) |
| Moisture Insulation Resistance (per MIL-I-46058C) | 1.2 × 10¹⁰ ohms (12GΩ) |
