The default 4-Pin DFN should be changed so the the default part looks like this - 

 

 

Your example footprint with the pin 1 to the low left is with IEC 61188-7 “Level B” Zero Orientation and mine straight out from Library Expert, is with IEC 61188-7 “Level A” Zero Orientation?

I found this old topic: 

https://www.pcblibraries.com/forum/ipc7351c_topic732.html" rel="nofollow - https://www.pcblibraries.com/forum/ipc7351c_topic732.html

At that time you Tom said that the Library Expert follows the IPC 7315C and Level B zero rotation, but that does not seem to be the case with the DFN-4?

I found this document, in which the DFN-4 is described as an oscillator (this is just a matter of a different 3D Body i guess):

https://www.pcblibraries.com/Products/FPX/UserGuide/download/Library%20Expert%20Surface%20Mount%20Families.pdf

Here in this document it shows the correct rotation for level B, but your library expert outputs it as level A!

I created the documentation, so now I have to find some 4-pin DFN parts and see what the typical pin numbering scheme is for Antenna, Capacitor, Crystal, Diode, Filter, Inductor, IC, Oscillator (the most used family for this package), Resistor & Transistor. 

Thank you for reporting this issue.

I can help you by telling that I discovered this issue after POD download of this one:

Hi,

I'm noting that 4-pin DFNs still follow "A" orientation and not "B" orientation. What's the motivation for this difference from other 4-pin components?

Thanks!

Our software programmer didn't read our documentation. 

Not sure if IPC-7351C will ever adopt the Orientation B concept to align with the IEC 61188-7 Standard which lists both A & B orientations. 

I'm not sure if IPC-7351C will ever be released. The chairman Karen McConnell just stepped down after 20 years and the subcommittee is losing interest. 

Unlike most component families, the 4-pin DFN has multiple pin configurations and Pin 1 can be in different locations. 

So there really is no Zero Orientation for the 4-pin DFN. 

Hi Tom,

Thanks for the info. Since there's no DFN specific reason to favor the current orientation, could the orientation be updated to match the orientation of similar 3&4-pin components? I feel like one of the major benefits of PCB libraries is the consistency of the footprints generated, and DFNs seem like an odd exception.

The programmers are not going to update anything until after the official release in mid-April. 

The main reason is that V2020 is a total rewrite that started a year ago and nothing is going to distract them from meeting release deadlines. 

This is not an easy fix and may take a week, but the most important thing is 100,000 users with existing libraries created by Library Expert do not like changes. Even though you can control the Zero Orientation in Preferences. 

Pin 1 in lower left, upper left, upper right, lower right. 

There is no standard pin out for the 4-pin DFN package and therefore there is no standard Pin 1 Zero Orientation. Never will be. The component manufacturer's are doing whatever they want.