Transparent conformal coating of optical assemblies such as sensors or LEDs

ELPEGUARD conformal coating SL1305 AQ-ECO

• high transparency and yellowing resistance

• individual transparent colouring in red, green or blue

• water-thinnable and fast drying

ELPEGUARD conformal coating SL1307

• high transparency and extremely high yellowing resistance

• fastest drying and easy repair - also available in handy spray tins

ELPEGUARD conformal coating SL1307 FLZ-T in cartridges

• ultra-thixotropic adjustment for high definition dispenser application of dams around plugs, components and pads to limit the application area of a subsequent conformal coating ( dam and fill)

ELPEGUARD thick film lacquers TWIN-CURE DSL 1600 E-FLZ

• high transparency and yellowing resistance

• combined with diffusor ink EH 13.400 UV extends the scattering angle of LEDs

• solvent-free, UV curing, shadow curing without additional temper step

ELPEGUARD silicone thick film lacquers DSL 1705 FLZ

• can be used at high temperatures up to 180 °C and under strong moisture stress, high chemical resistance

• addition cross linking; thermal curing; for thick film applications up to 3 mm

ELPEGUARD silicone thick film lacquers DSL 1706 FLZ

• can be used at high temperatures up to 180 °C and under strong moisture stress, high chemical resistance

• condensation cross linking at room temperature; for thick film applications up to 300 µm.

Opaque conformal coatings for optoelectronics

ELPEGUARD® conformal coatings SL 1347 and SL 1397

Selective coating with the white opaque conformal coating ELPEGUARD SL 1397 ensures maximum luminous efficacy: The LEDs are left uncoated while dark components are hidden, thus amplifying the luminous efficacy (reflectivity) considerably. As key characteristics, ELPEGUARD SL 1397 boasts very high reflectivity ratings (> 0.9 at 460 nm) along with high UV and thermal stability.

Application of the black opaque, mat conformal coating ELPEGUARD SL 1347 ensures a strong contrast to the base material. With this material, it is possible to coat selected areas of assemblies (which are usually coated with green solder resist) in black to achieve a strong contrast of the LEDs to the non-reflective base material. This is of particular advantage in applications with emphasis on high optical quality, such as information panels, traffic lights, etc.