I am trying to make a PCB footprint of a edge-mounted DE-15 D-sub connector (a.k.a. HD-15, DE15, HD15), however the datasheet does not seem to provide enough metrics to make it unambiguous.
Here is the datasheet:
This is my best try:
My two greatest issues is:
- The horizontal placement of the pins in relation to the screw holes. Currently I have assumed that the 0.45 mm measure denotes a horizontal offset from the midpoint between the screw holes, to the center of the middle pin on the first row (rounded up for connectors with an even amount of pins). Is this correct?
- The orientation of the connector. On the one hand, I could assume that the two bottom figures of the datasheet have consistent orientation with the cable being mounted from "above", and that the "PC Board layout" measure gives the minimum distance to other components. However, my first instinct was that the same measure gave the distance to the PCB edge, which should only be relevant if the cable is mounted from "below". In my footprint I assumed the former, but is it correct?
My guess is that there is a standard way to read D-sub datasheets which would make the footprint unambiguous, but I have not been able to find a resource for that.