I’m new to KiCad, and creating my own libs (+ 3D models), as I did with the previous software I’ve been using for years…
I’m also new to SMD ; until now, I’ve always been using through hole components, and I’ve always been making my PCBs at home ; I got two pratice kits with tiny components that are still laying untouched on the workbench…
At this time, I never created a PCB with KiCad. I only captured schematics of what I’m doing on breadboards (9 months). But I’ll soon have to make them run on PCBs.
I created a 3D model for this package : https://www.mcielectronics.cl/website_MCI/static/documents/Datasheet_TM1637.pdf
I didn’t find the exact same package in the default libraries. SSOP SOIP QSOP, etc. I’m completely lost in datasheeets, and I didn’t find a clear description for all the “SOP” variants (Wikipedia helped a bit). DIPs are easier…
I don’t know how to name the package. Should it be “SOP-20_7.65x12.7mm_P1.27” ? And I don’t know what footprint (pads) should be associated with this package ; It seems I have to create it.
With the footprint wizard, it could be :
pads : 20, rows : 2, pitch : 1.27, pad width : 0.6, pad length 2.2, row spacing : NOT sure how to calculate row spacing ! Do you know of a reliable link ? Row spacing, pads dimensions, silkscreen spacing, etc. (obviously many rules depend on the PCB naufacturer)
Last question : reading (tons of) datasheets about passive SMD components, they come with different heights (as through hole do…). The KLC says : just add height after “XxY”. Is that correct ? And same for footprints : one height = one footprint ? Correct ?
Switching from one EDA to another + through hole to SMD at the same time is not easy !