How can I mark diodes and LEDs on PCB to avoid confusion of Chinese PCB fab?

(On every board we submit a design for assembly, some designers may make PCB fab confused about the orientation of diodes or LEDs. And we had both Eagle's default diodes and KiCad's default diodes sent back from Chinese fab.)

September 19, 2023

I guess, we may add a silkscreen “+” and “-” just outside of the footprint on either end. Just put the diode schematic symbol on the silkscreen. Very Clear.

#LED #PCB Design

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

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How can I mark diodes and LEDs on PCB to avoid confusion of Chinese PCB fab?

Oliver Smith

Oliver Smith

What Others Are Asking

Does a simple wire antenna need a 50 ohm transmission line?

How can I tell whether an SMT/SMD capacitor is oriented with plates horizontal or vertical?

Why does the manufacturer use a flying probe tester when they already have an in-circuit tester?

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