What’s So Difficult about Diodes?

A diode can be put on a a PCB in one of two ways. It’s only got two pins (usually — see, I already have a caveat). I’ve written about them a few times before. I’ve got a sampling of those posts here. But first,

Good marking:





Bad marking:





The diode schematic symbol is always a good choice. If there isn’t room for that, “A” for anode or “K” for cathode work well too. Why “K”, and not “C”, you may ask? Because “K” kan’t be konfused with a capacitor.

Okay. Enough ranting for now. Just use the diode schematic symbol, “A”, for anode, or “K”, for cathode; and always look at the data sheet for the exact part number.

Duane Benson
1 cricket per chip