Posts Tagged ‘soldermask’

What’s the meaning for S/M in PCB?

Friday, March 25th, 2016

S/M means solder mask, it is a kind of the Liquid photosensitive ink, it is the green, yellow, red, black or white color on PCB surface. We print solder mask on the PCB surface that no need soldering, and then drying and curing.

With solder mask, the Tin won’t stick to the PCB.

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