What type of silkscreen ink is used in PCB manufacturing?

Sometimes, my PCB supplier mentions about silkscreen ink when it comes to logo printing. I am curious about the types and features of different inks.

pcb manufacturing
September 19, 2023

There were 2 different inks used in practice-Solder mask and legend ink.

The solder mask is used to cover the entire PCB board and is usually green, but it can be almost any color. It is UV activated, so the areas that are masked can be scrubbed off while the UV- exposed areas are permanent.

The legend is not necessary, but nice to have for placing the components later. Legend ink is an epoxy with a very long drying time. Cure it in an oven to quicken the drying time.

#PCB manufacturing

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

Oliver Smith

What Others Are Asking

What type of PCB material should I use?

I’m making my first 4 layer PCB (1 signal, 2 GND plane, 3 PWR plane, 4 signal) with impedance control. How do you know what type of material to use? Is FR4 material ok for the 50 Ω and 90 Ω impedance?

Oliver Smith November 17, 2023

Are vias reliable in flexible circuits?

As we all know, flex PBC is flexible. I am curious about the reliability of vias in it. Is it easy to break?

Oliver Smith October 27, 2023

What is the cheapest type of package to assemble?

Most microcontrollers come in several different packages. Assuming all the packages cost the same, what typically would be the cheapest one to use in terms of board assembly?

Oliver Smith November 24, 2023