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Added LQFN-48 package with 16 centered ground pins and thermal vias

Matyas Mehn requested to merge github/fork/matyas1995/VQFN-48-1EP_7x7mm_P0.5mm_EP3.5x3.5mm into master

for NXP MKW41Z part to Package_DFN_QFN.

This part requires a 7x7mm 48 pin VQFN footprint with 16 centered ground pads, which are created as one 3,5x3,5mm ground pad with 16 solder mask cutouts

Package datasheet: https://www.nxp.com/docs/en/package-information/98ASA00694D.pdf

I also added thermal and RF grounding vias as recommended in the design considerations: https://www.nxp.com/docs/en/application-note/AN5377.pdf

This footprint was not scripted with the kicad-footprint-generator. I have asked there and it was not deemed possible nor necessary to script it: https://github.com/pointhi/kicad-footprint-generator/issues/551

I still have a question regarding the correct naming of the footprint: Since it has 16 ground pads, would I define its name as 1EP and if yes, which size do I define then?

Thanks for your help, Matyas

image

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Edited by Wayne Stambaugh

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