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Added HTSSOP-14-1EP_4.4x5.0mm_P0.65mm_EP3.4x5.0mm_Mask3.0x3.1mm #2144
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Generated using: pointhi/kicad-footprint-generator#510 Datasheet: http://www.ti.com/lit/ds/symlink/lm5161.pdf#page=34 Package drawing: http://www.ti.com/lit/ml/mpds370/mpds370.pdf Custom TI name: R-PDSO-G14 (PWP)
Datasheet: http://www.ti.com/lit/ds/symlink/lm5161.pdf#page=34 Footprint: KiCad/kicad-footprints#2144
Hi @cnieves1, can you explain why the drawing is showing a smaller EP than the part does? |
@cnieves1 ahh thats exactly it. For whatever reason the footprint isn't rendering mask correctly. It's rendering mask and then copper on top, thanks for pointing that out. |
@cnieves1 the recommended land pattern in the datasheet doesn't match with the lands in the part. For example the pads are 1.575mm long but the datasheet indicates 1.78mm. Am I looking in the wrong place? |
No, you are right.
In this case, I think the footprint generator calcules the land pattern based on physical dimensions (both body and legs), using IPC rules.
Therefore the generated footprint usually doesn't match the manufacturer's recommended footprint.
If the IPC rules built into the generator are right, the footprint would be ok.
In other PRs, the general recommendation is using this generator whenever possible, so I hope it is doing the right thing...
El 16 de marzo de 2020 23:27:08 CET, Chris Morgan <notifications@github.com> escribió:
…
@cnieves1 the recommended land pattern in the datasheet doesn't match
with the lands in the part. For example the pads are 1.575mm long but
the datasheet indicates 1.78mm. Am I looking in the wrong place?
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#2144 (comment)
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@chmorgan For scripted entries you will review if the package dimensions entered into the script match in the datasheet, disregarding the recommended footprint. If they do, and the footprint doesn't have an weird error that stands out, merge the footprint and add a comment on the script repo that the footprint has been merged. |
@evanshultz appreciate the tip and it makes sense that the the values might not match exactly. |
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Dimensions match, pins match.
* Added LM5161PWP Datasheet: http://www.ti.com/lit/ds/symlink/lm5161.pdf#page=34 Footprint: KiCad/kicad-footprints#2144 * Changed VCC pin type to power output * Include footprint in description, changed footprint filter and added NC pins. * Changed NC pin type to don't connect * Fix positions of NC pins
Generated using: pointhi/kicad-footprint-generator#510
Datasheet: http://www.ti.com/lit/ds/symlink/lm5161.pdf#page=34
Package drawing: http://www.ti.com/lit/ml/mpds370/mpds370.pdf
Custom TI name: R-PDSO-G14 (PWP)
All contributions to the kicad library must follow the KiCad library convention
Thanks for creating a pull request to contribute to the KiCad libraries! To speed up integration of your PR, please check the following items:
Be patient, we maintainers are volunteers with limited time and need to check your contribution against the datasheet. You can speed up the process by providing all the necessary information (see above). And you can speed up the process even more by providing a dimensioned drawing of your contribution. A tutorial on how to do that is found here: https://forum.kicad.info/t/how-to-check-footprint-correctness/9279 (This is optional!)