Liquid Photoimageable Solder Resist Ink for LED

The Photoimageable LED white ink series are most suitable for LED back panel application with its high whiteness, high glossy, and good hiding power depend on board type or requirements, there is different product choice.

DivisionSPI-707 WHITE □
LF□NLLT-□L1
Viscosity(25˚C, VT-04F)150~300 PS
Reflectance
(@460nm, 20㎛ on CU)
79~84%83~85%82~84%84~86%
ΔE(280˚C X 3min X 3times,
in Convection oven)
<3<2.0<3<1.7
Pre-Curing78˚C X 20min (One side)
Photo Exposure400~700 mJ/cm2
Post-curing150˚C X 60min
Pencil hardness≥ 4H≥ 5H
Coating Thickness
(after post-curing)
10~18㎛13~25㎛
Resistance to molten solder260˚C X 10sec , 3times
Acid Resistance
(10Vol% H2SO4, 20˚C)
≥ 30 min
Alkali Resistance
(5wt% NaOH, 20˚C)
≥ 30 min
Surface Resistance
(40˚C, 90% RH, 240hr)
≥ 1 X 1013Ω
Shelf life(20℃ in a dark Place)6 months
Major FeaturesFlexibilityHigh reflectanceHigh performance
Properties
Non-discoloration

* Packing Unit : 1, 4 Kg