HumiSeal UV500 is a flexible, UV curable conformal coating for electronics that face heavy thermal cycling and vibration. It is a high-solids, dual-cure acrylated urethane with an elastomeric finish. As a result, it protects boards where harder coatings might crack or lift.
Why choose HumiSeal UV500?
Components expand and shrink as temperatures change. For this reason, rigid coatings can crack or delaminate over time. UV500 stays flexible, so it absorbs this movement and helps damp vibration.
It is tack-free the moment it is exposed to UV light. In addition, a secondary moisture cure completes the job in shadowed areas that UV cannot reach. This gives you full protection across the whole board.
The coating also offers strong electrical insulation and moisture resistance. Furthermore, you can remove it with a dedicated chemical stripper, which makes rework and repair easier. It glows under UV light, so inspection is quick and simple.
Key features
- UV cure with secondary moisture cure
- Tack-free straight after UV exposure
- 98% solids with no thinner needed
- Non-flammable, with viscosity of 300 cps
- Volume resistivity of 8.0 × 10¹² Ω·cm
- Thermal conductivity of 0.505 W/mK
- Flexible, elastomeric acrylated urethane base
- UL approved and UV fluorescent for inspection
- Removable with a chemical stripper for rework
- Available in 1 L and 5 L
Where to use HumiSeal UV500
This coating suits high-reliability electronics in harsh conditions. For example, it is a good fit for:
- Transportation and automotive electronics
- Aerospace assemblies
- Boards exposed to wide temperature swings
- Assemblies that face shock and vibration
Because it cures in seconds, it also helps speed up high-volume coating lines.
Need help choosing a conformal coating?
OnBoard Solutions supplies conformal coatings and coating equipment to electronics manufacturers across Australia. You can browse our urethane conformal coatings or view our UV curing systems. To learn more about coating standards, visit the IPC website. Alternatively, contact our team to order HumiSeal UV500 today.
