Product Introduction
HumiSeal® 1B73LOC is a low-VOC, solvent-based acrylic conformal coating that protects PCAs while meeting strict North American air quality standards. This fast-drying formula offers environmental compliance and efficient application for modern electronics manufacturing.
HumiSeal® 1B73LOC Features
- Environmental Compliance: Low-VOC formula adheres to North American air quality standards.
- Fast-Drying & Efficient Application: Speed up production cycles.
- UV Fluorescence for Inspection: Simplifies inspection with UV light.
- Easy Repairability: Facilitates repairs, reducing reapplication costs.
- Industry Compliance & Standards: MIL-I-46058C qualified, IPC-CC-830 compliant, and RoHS compliant.
HumiSeal® 1B73LOC Applications
- Conformal coating for electronics in environmentally regulated areas.
- Ideal for rapid production environments.
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) | 1.23 ± 0.03 g/cm³ |
| Solids Content (% by weight, per Fed-Std-141, Meth. 4044) | 26 ± 2 % |
| Viscosity (per Fed-Std-141, Meth. 4287) | 445 ± 30 centipoise |
| VOC | 92 grams/litre |
| Drying Time to Handle (per Fed-Std-141, Meth. 4061) | 25 minutes |
| Recommended Coating Thickness | 25 - 75 microns |
| Recommended Curing Conditions | 24 hrs @ RT or 2 hrs @ 76°C |
| Time Required to Reach Optimum Properties | 7 days |
| Recommended Thinner | HumiSeal® Thinner 701 |
| Recommended Stripper | HumiSeal® Stripper 1080, 1080A |
| Shelf Life at Room Temperature | 24 months |
| Thermal Shock (50 cycles, per MIL-I-46058C) | -65°C to 125°C |
| Coefficient of Thermal Expansion (TMA) | 67 ppm/°C |
| Glass Transition Temperature (DSC) | 42°C |
| Modulus (DMA) | 11.1 MPa |
| Flammability (per UL 94) | V-0 |
| Dielectric Withstand Voltage (per MIL-I-46058C) | >1500 volts |
| Dielectric Breakdown Voltage (per ASTM D149) | 6300 volts |
| Dielectric Constant (at 1MHz and 25°C, per ASTM D150-98) | 2.6 |
| Dissipation Factor (at 1MHz and 25°C, per ASTM D150-98) | 0.01 |
| Insulation Resistance (per MIL-I-46058C) | 5.5 x 10¹⁴ ohms (550TΩ) |
| Moisture Insulation Resistance (per MIL-I-46058C) | 7.0 x 10¹⁰ ohms (70GΩ) |
| Fungus Resistance (per ASTM G21) | Passes |
