Peelable solder-stop, also known as peelable solder mask or blue mask protects selective areas on PCBs from wetting with tin by the solder wave during wave soldering (flow soldering). For this purpose, thermally curing peelable solder-stop is selectively applied to the areas to be protected.
Protected will be e.g. pads for a later, second soldering process as well as drill holes, gold or carbon contacts. After wave soldering, the peel-off solder-stop can simply be removed manually.
Production data: The layer with peelable solder-stop should always include the PCB outline. Please also specify whether the peelable solder-stop is required for TOP or BOTTOM.