Pins of two footprints overlaying but no DRC error?

[BobZ]

Hi, @retiredfeline

In different threads I have discussed a couple of related but opposite topics. So perhaps that is the cause of some confusion.

In this thread I am discussing two footprints with which (in my PCB editing) I have accidentally caused the pins to collide or overlay. I want to place BOTH devices. But alas without maybe going into quantum mechanics (or Australia? ) I do not know how to put two objects in the same place at the same time.

I had another thread:

Novel (?) Combi Footprint and symbol using it

I am working on this board design. I am designing it to be flexible (multiple possible BOMs such as FET or NPN power transistors.) And I have this additional NPN where I want to be able to use a SOT23 or SOT223 or bypass with a 0 ohm 1206 resistor. Yesterday I was editing the board layout to connect the 1206 resistor collector-emitter to my NPN combi footprint. But today I realized that I will only use one of the three in an assembled board. So I have further edited my SOT23-SOT223 footprin…

where I discussed a combi symbol and combi footprint in which any ONE of three actual devices could be placed. That footprint is one half of the problem in this thread. The issue here is that my combi SOT223 collector has collided (my mistake) with the pin of a TO220 (separate footprint) and I saw no resulting DRC error.

As for 8.09 the last time I looked I did not see it without the “RC.” I had seen a post which recommended it. Right now I want to hold off from updating to 9.X.

What does the “RC” mean?