Product Introduction: HumiSeal® 1B73EPA
HumiSeal® 1B73EPA is a fast-drying, single-component acrylic conformal coating designed for use on printed circuit assemblies. This coating provides excellent flexibility and protection while fluorescing under UV light for easy inspection. It is easily repairable and complies with multiple global standards, including MIL-I-46058C, IPC-CC-830, RoHS Directive 2015/863/EU, and EPA 33/50. It is recognized under UL File Number E105698, ensuring high performance and compliance.
HumiSeal® 1B73EPA Features:
- Fast-drying, single-component acrylic conformal coating
- Designed for printed circuit assemblies
- Excellent flexibility for versatile applications
- Fluorescence under UV light for easy inspection
- Easily repairable
- MIL-I-46058C qualified
- Compliant with IPC-CC-830 and RoHS Directive 2015/863/EU
- EPA 33/50 compliant
- Recognized under UL File Number E105698
HumiSeal® 1B73EPA Applications:
- Ideal for protecting printed circuit assemblies in demanding environments
- Can be applied to substrates that are cleaned or assembled with low-residue “no clean” materials
- For further technical support, contact HumiSeal
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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| Product Specification | |
| Density, per ASTM D1475 | 0.96 ± .03 g/cm3 |
| Solids Content, % by weight per Fed-Std-141, Meth. 4044 | 23 ± 3 % |
| Viscosity, per Fed-Std-141, Meth. 4287 | 230 ± 30 centipoise |
| VOC | 739 grams/litre |
| 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 60 min. @ 76°C |
| Time Required to Reach Optimum Properties | 7 days |
| Recommended Thinner | HumiSeal® Thinner 600 |
| Recommended Stripper | HumiSeal® Stripper 1080, 1080A |
| 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-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 |
