Incure Ultra-Illumina 3511 is a high-performance, 100% solids UV light-curable conformal coating developed for PCB assembly protection. Designed for use in high-volume spray coating systems, this low-viscosity resin flows smoothly without clogging application valves and provides an even coating with excellent surface finish. It cures to a clear, hard, and glossy protective film with thicknesses ranging from 30 microns up to 5 mm.
The cured coating serves as an excellent moisture barrier, including under high-altitude conditions. It also fluoresces under UV inspection light, enabling rapid in-line inspection and quality control. For shadowed or recessed areas beneath components, curing is completed through a reliable secondary heat cure process.
Ultra-Illumina 3511 meets UL 746C standards, with ratings for both indoor and outdoor use, and complies with UL 94V-0 flame class at operating temperatures up to 120°C.
Key Features
- 100% solids UV-curable coating with optional heat-cure for shadowed areas
- Low-viscosity formulation ideal for spray systems
- Glossy, clear, and resilient protective finish
- Fluorescing under UV light for visual inspection
- UL 746C compliant, UL 94V-0 flame class
- Protects against moisture, thermal cycling, and altitude-induced failures
- Thickness range: 30 microns to 5 mm
Typical Applications
- Printed circuit board assembly (PCBA) protection
- High-reliability electronics for automotive, aerospace, and defense
- Moisture and chemical barrier coatings
- Outdoor and high-altitude electronic assemblies
Curing Schedule
| Wavelength | Minimum Intensity |
| UVA (320–400 nm) | 5,000 mW/cm² |
| UVB (290–320 nm) | 690 mW/cm² |
| UVC (290–220 nm) | 150 mW/cm² |
| VUV (400–700 nm) | 4,800 mW/cm² |
Curing Conditions and Technical Properties
| Property | Specification / Value |
| Curing Method | UV + Secondary Heat Cure |
| UV Wavelength Range | UVA (320–400 nm), UVB, UVC, VUV |
| Minimum UV Intensity (UVA) | 5,000 mW/cm² |
| Coating Thickness | 30 microns – 5 mm |
| Shore Hardness (D) | D75 – D85 |
| Water Absorption (24h) | 0.50% |
| Elongation at Break | 15% |
| Young’s Modulus | 693 MPa (100,600 PSI) |
| Linear Shrinkage | 0.20% |
| Thermal Range | -55°C to 155°C |
| Flame Class | UL 94V-0 at 120°C |
| CTE (Coefficient of Thermal Expansion) | 101 ppm/°C |
| Secondary Heat Cure Options | 95°C – 120 min / 110°C – 60 min / 125°C – 30 min |
Storage and Handling: Shelf life is 12 months in unopened original containers. Store between 2°C and 20°C in a dark, cool place. Always keep containers closed when not in use and avoid direct light exposure. Do not repack into other containers to maintain product integrity. Surfaces must be clean and dry, free from grease or mold release agents. Use isopropyl alcohol (IPA) to clean uncured material. Refer to the MSDS before use.
Sterilization Note: This product is not formulated for EtO or gamma sterilization. For critical assemblies requiring repeated sterilization or steam autoclave exposure, consult Incure Support for application-specific validation.
Contact infomation:
LECI Co., Ltd
R-1901, Saigon Trade Center Bld, 37 Ton Duc Thang Str., Ben Nghe W., Dist. 1, HCM City 70000, VN.
Long Bien, Ha Noi, VN.
Phone: (+84) 901442689 (WhatsApp)
Hotline: 02822202988
Website: lecilaser.com
