Product Introduction
HumiSeal® 1B78 is a high-performance, fast-drying acrylic conformal coating for printed circuit assemblies. Known for its superior de-foaming properties and adhesion, it is well-suited for ‘no clean’ technologies, offering optimal protection in demanding environments.
HumiSeal® 1B78 Features
- Superior Application Properties: Enhanced de-foaming for smooth coating.
- Enhanced Adhesion: Excellent bonding for ‘no clean’ processes.
- Flexibility & Electrical Properties: Long-term reliability and protection.
- UV Fluorescence for Inspection: Quick, reliable inspection under UV light.
- Easy Repairability: Reduces downtime with easy repair options.
- Compliance with Standards: IPC-CC-830 and RoHS Directive 2015/863/EU.
HumiSeal® 1B78 Applications
- Ideal for no-clean manufacturing environments.
- Protection for PCAs in electronics.
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) | 0.93 ± 0.02 g/cm³ |
| Solids Content (% by weight, per Fed-Std-141, Meth. 4044) | 27.5 ± 2 % |
| Viscosity (per Fed-Std-141, Meth. 4287) | 250 ± 20 centipoise |
| VOC | 674 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 2 hrs @ 76°C |
| Time Required to Reach Optimum Properties | 7 days |
| Recommended Thinner | HumiSeal® Thinner 73/600 |
| Recommended Stripper | HumiSeal® Stripper 1080 |
| Surface Insulation Resistance (IPC TM 650 9.39) | LogOhms |
| Adhesion to No-Clean PCBs | Excellent |
