Solder Mask Printing

Solder mask printing on aluminum PCBs has no differences from other PCBs. Under the UV light, the solder mask ink gets dry in the exposure-development method. And then the panels are baked in an oven to let the solder mask totally cure.

Since aluminum PCBs are mainly used for lighting, the solder mask color is usually white. Many customers choose 85% light reflective white solder masks.

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