The new LED white soldermasks weren’t much of an improvement; consequently, SEC innovated our own solution.
We identified two offering demonstrating significant improvements. Find out more about them by watching the LED PCB webinar or setting up a free consultation with Yash Sutariya.
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.