I have massive problem with finding a correct scheme to name the packages correctly in my Pick&Place machine's library.
For example: QFN-16
I have one QFN-16 with 6+6+2+2 leads
and another QFN-16 with 4+4+4+4 leads.
Both also have different outer dimensions.
One is 0.6mm thick and another one maybe 1.0mm
Since height is very important for the Pick&Place machine, I would have to distinguish these again… so I end up with toooo many QFN-16 entries…
However, both are named as "QFN-16" by vendor and manufacturer.
I started naming my parts "QFN-16_3x3_6+6+2+2" and so on, but this gets suuuper confusing and doesn't even include the height.
Any ideas? I'm not using Altium or anything like that. I just do a small production.
Best Answer
There is an naming convention for land patterns in IPC-7351B. It would make sense to use it or something similar for your pick&place library.
The naming convention includes pitch, pin count, body width, length and height, so it might be what you are looking for.
Example:
A QFN package with .5mm pitch, 5mm by 5mm body, 1 mm height and 28 pins would be: QFN50P500X500X100-28
There is a guide to the naming land patterns here
The IPC standard can be bought through the IPC online store.