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SuperWhite Soldermask
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SuperWhite LED Soldermask

    Current Resin System     Desired Resin System
    Focus: initial thermal shock, not constant heat       Remains white through Assembly & Lifespan   
    Tend to brown over time     High reflectivity to enhance performance
    Not developed as Reflecting Surface for LEDs     Result: Lower power consumption

Solution: White Hot Temperature LED Soldermask

During the past two years a number of LED white soldermasks have been introduced. Unfortunately, we didn't see much of an improvement.

As a result, we innovated our own solutions and identified two offerings demonstrating significant improvements.

Achieving SuperWhite Soldermask While Resisting Browning

One way to achieve a "SuperWhite" soldermask that resists browning is to apply a second coat of thermal cured white soldermask over the LPI.

However, this can cause a concern that the second coat may impede the thermal dynamics of the PCB surface.

Based on the thermal images below comparing a single coat of LPI to a board with a secondary coat, we can see that this is a non-issue.