Product Introduction
HumiSeal® 1B73D is a high-performance, single-component, fast-drying acrylic conformal coating designed to protect printed circuit assemblies (PCAs). This advanced formulation offers exceptional flexibility and electrical properties, making it ideal for safeguarding sensitive electronic components. Compliant with industry standards, HumiSeal® 1B73D ensures reliability in modern electronics manufacturing.
HumiSeal® 1B73D Features
- Fast-Drying & Easy Application: Quick drying process for efficient coating.
- Bubble-Free Application: Minimizes bubble formation for smooth coatings.
- Excellent Flexibility & Electrical Properties: Ensures robust insulation and flexibility.
- UV Fluorescence for Inspection: Simplifies quality control with UV light detection.
- Easy Repairability: Simplifies maintenance with easy repair options.
- Industry Compliance: RoHS compliant and UL certified under File No. E105698.
HumiSeal® 1B73D Applications
- Protection for printed circuit assemblies in modern electronics manufacturing.
- Ideal for selective film coating applications.
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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Properties Specific to HumiSeal® 1B73D or 1B73D/600 PB54
| Property | 1B73D | 1B73D/600 PB54 |
| Density (per ASTM D1475) | 0.92 ± 0.02 | 0.925 ± 0.025 |
| Solids Content (% by weight, per Fed-Std-141, Meth. 4044) | 29.5 ± 2 | 19 ± 2 |
| Viscosity (per Fed-Std-141, Meth. 4287) | 262 ± 20 | 54 ± 5 |
| VOC (grams/litre) | 661 | 749.2 |
Properties of HumiSeal® 1B73D and 1B73D/600 PB54
| Property | Value |
| Drying Time to Handle (per Fed-Std-141, Meth. 4061) | 30 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 73 |
| Recommended Stripper | HumiSeal® Stripper 1080 |
| Shelf Life at Room Temperature, DOM | 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-1 |
| 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 |
| Maximum Operating Temperature | 150°C |
