It creates a tough, flexible film that guards against high humidity, fungus, and corrosive chemicals.
Provides a tough, flexible barrier against moisture, mechanical abrasion, and harsh chemicals. humiseal 1a68
HumiSeal 1A68 serves as a benchmark for acrylic conformal coatings in the electronics industry. Its combination of fast drying times, excellent insulation properties, and ease of rework makes it an ideal choice for manufacturers seeking reliable protection without compromising production speed. While newer technologies like UV-cure coatings offer instant curing, the simplicity and effectiveness of 1A68 ensure its continued relevance in PCB protection strategies. It creates a tough, flexible film that guards
For high-volume production, 1A68 can be used with conventional spray equipment. It is typically thinned in a 1:1 ratio with HumiSeal Thinner 521 to ensure a pinhole-free finish. Its combination of fast drying times, excellent insulation
HumiSeal 1A68 is versatile and can be applied using several standard techniques:
1A68 is a (1K) system, meaning it does not require mixing prior to use. It cures via solvent evaporation. As the solvents evaporate, the acrylic resin forms a clear, flexible film over the circuit board. This eliminates the pot-life issues associated with two-component systems, reducing waste and simplifying inventory management.
| Property | Value | |----------|-------| | Viscosity | 150–300 cP (sprayable) | | Solids content | 30–35% | | Dielectric strength | ~2,800 V/mil | | Operating temp | –65°C to +125°C | | Cure time (air dry) | 15–30 min tack-free; 24–72 hr full cure | | UV tracing | Yes (fluorescent under UV light) |