Skip to content
This repository has been archived by the owner on Oct 2, 2020. It is now read-only.

Correct SOT-143 #2415

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Correct SOT-143 #2415

wants to merge 1 commit into from

Conversation

perigoso
Copy link
Contributor

@perigoso perigoso commented Aug 25, 2020

Corrected footprint dimensions for standard SMD instead of wave soldering.

Related to #2381 .

Datasheets for this package:

The 3D model seems to not be correct according to the datasheets.

Before:
image
image

After:
image
image

The same applies to the _Reversed and _Reversed_Handsolder footprints

@myfreescalewebpage myfreescalewebpage added Bug Fix footprint existing in the library Pending reviewer A pull request waiting for a reviewer labels Aug 25, 2020
@cpresser cpresser linked an issue Sep 17, 2020 that may be closed by this pull request
@cpresser
Copy link
Contributor

I assumed you used the diodes datasheet? I checked against that one.

  • Pad numbering and Position is good.
  • F.Fab is good
  • Courtyard is good
  • Please add a datasheet link into the description
  • Silkscreen should move outwards a little. It should not overlap the F.Fab line. Like so
    image
  • The reverse part should be rotated so that pin1 is in the upper-left quadrant
  • I am unsure how to check the handsoldering parts. Is there any rule you applied to elongate the pads?

@cpresser cpresser self-assigned this Sep 17, 2020
@cpresser cpresser removed the Pending reviewer A pull request waiting for a reviewer label Sep 17, 2020
@perigoso
Copy link
Contributor Author

I assumed you used the diodes datasheet? I checked against that one.

I don't remember which datasheet i ended up using as a guideline, but i believe i checked them all against each other and they were the same or very close to the same dimensions (if I'm remembering correctly) so it shouldn't matter too much.

Please add a datasheet link into the description

done. I added NXP's references because they had a both the normal SOT-143 and the reverse pinning version and so it is more consistent.

Silkscreen should move outwards a little. It should not overlap the F.Fab line. Like so

done.
image

The reverse part should be rotated so that pin1 is in the upper-left quadrant

done.
image

I am unsure how to check the handsoldering parts. Is there any rule you applied to elongate the pads?

I looked for guidelines, but since i didn't find any i just did what felt right to me, the pins are slightly shorter than the original hand-solder versions

Sign up for free to subscribe to this conversation on GitHub. Already have an account? Sign in.
Labels
Bug Fix footprint existing in the library
Projects
None yet
Development

Successfully merging this pull request may close these issues.

SOT-143 footprint
3 participants