# Seve - @Techmannih 1206x4 has a 3d model in kic...

Channel: #contributor
Source: https://discord.com/channels/1233487248129921135/1460480790935633941
Started: 2026-01-13T03:49:15.176000+00:00
Last activity: 2026-06-26T20:50:42.493000+00:00

## Seve — 2026-01-13T03:49:14.980000+00:00

<@1067854999889137715> 1206x4 has a 3d model in kicad that is pretty good, can possibly be used as reference

My 1206x4 footprint does not match kicad's, here's the datasheet for it https://industrial.panasonic.com/cdbs/www-data/pdf/AOC0000/AOC0000C14.pdf

I have no idea why it doesn't match kicads but maybe you can figure it out

## techmannih — 2026-01-13T04:02:04.745000+00:00

Okay I will check it again but we have already matched this kicad parity test.

## Seve — 2026-01-13T04:02:25.963000+00:00

i confirmed it physically, kicad has the wrong footprint for my chip

## Seve — 2026-01-13T04:02:37.098000+00:00

[attachment]
Attachment: AP1GczMNPvGnuSKSuja2cGLVYnbMS-o0zqRkvJpAbnUgsq_4BYu99G4wB9o6FAw2656-h1992-s-no-gm.png — https://community.tscircuit.com/media/1460484149319041135

## Seve — 2026-01-13T04:03:42.696000+00:00

if we need to create parameters that's fine (e.g. width, height)

## Seve — 2026-01-13T04:03:51.040000+00:00

if width/height are provided we need to compute pitch

## Seve — 2026-01-13T04:04:10.031000+00:00

this is what i bought https://www.digikey.com/en/products/detail/panasonic-electronic-components/EXB-38VR000V/417359

## Seve — 2026-01-13T04:05:18.807000+00:00

i think 3216 metric might be a clue, because the body dimensions are 3.2mm by 1.6mm

## Seve — 2026-01-13T04:06:28.842000+00:00

but honestly from what i'm seeing kicad is just wrong

## techmannih — 2026-01-13T04:06:59.006000+00:00

Oh

## Seve — 2026-01-13T04:07:23.301000+00:00

i've gone through a ton of jumpers and they are all 3.2mm x 1.6mm

## techmannih — 2026-01-13T04:07:34.856000+00:00

I will match with https://industrial.panasonic.com/cdbs/www-data/pdf/AOC0000/AOC0000C14.pdf

## techmannih — 2026-01-13T04:08:19.748000+00:00

Mostly we use pinrow for jumpers?

## Seve — 2026-01-13T04:08:35.902000+00:00

a resistor array with 0ohms IS a jumper

## techmannih — 2026-01-13T04:08:51.841000+00:00

Okay

## Seve — 2026-01-13T04:17:10.706000+00:00

<@1067854999889137715> https://tscircuit.com/seveibar/1206x4_3216metric#files

## Seve — 2026-01-13T04:17:17.202000+00:00

^ this looks like it's probably correct

## Seve — 2026-01-13T04:17:23.677000+00:00

i'll test it on the laser in a sec

## ! Rushabh | Linux Shill — 2026-01-13T04:32:29.060000+00:00

https://github.com/tscircuit/jscad-electronics/pull/251

## Seve — 2026-01-13T04:56:24.667000+00:00

[attachment]
Attachment: IMG_2378.jpg — https://community.tscircuit.com/media/1460497692454162669

## Seve — 2026-01-13T04:56:31.436000+00:00

The footprint i linked above

## techmannih — 2026-01-13T05:27:49.371000+00:00

is it correct now?

## Seve — 2026-01-13T16:53:04.329000+00:00

the one i made is correct yes

## techmannih — 2026-06-26T01:03:50.313000+00:00

<@757706909351411845> can you check it
https://github.com/tscircuit/docs/pull/764

## techmannih — 2026-06-26T02:05:13.581000+00:00

<@757706909351411845> The chips we currently have in `tscircuit/ti` are also imported from JLCPCB. Can we add those chips to the documentation as well?
They're currently used by their MPNs. For example, `BQ24074` is exported as `BQ24074RGTR`.
Attachment: Screenshot_from_2026-06-26_06-38-32.png — https://community.tscircuit.com/media/1519886222288228382

## Seve — 2026-06-26T03:13:40.324000+00:00

Yea all the chips need to be individually listed in the README but not the docs. The docs just need an overview and link to the README

## Seve — 2026-06-26T03:14:15.545000+00:00

as for the naming, the short name with a footprintVariant prop to change between different available footprints is the best option

## Seve — 2026-06-26T03:14:32.033000+00:00

This means you will need to import from jlcpcb multiple times for a single chip

## techmannih — 2026-06-26T04:27:33.138000+00:00

This is a really great idea! I was concerned about which footprint we should use, especially since the datasheet often provides multiple footprint options for the same chip. This approach makes it much clearer.

## techmannih — 2026-06-26T16:54:43.290000+00:00

<@757706909351411845> I think we should use the TI chips like this. Does that sound right?
```
import { BQ24074 } from "@tsci/tscircuit.ti"

export default () => (
  <board width="14mm" height="14mm">
    <BQ24074 name="U1" footprintVariant="rgtr" pcbX={0} pcbY={0} />
  </board>
)
```

https://github.com/tscircuit/ti/pull/46

## Sapphire — 2026-06-26T17:00:42.135000+00:00

<:warning:892823499205406760> Please avoid using excessive mentions, as it creates unnecessary notifications and disrupts others — use mentions only when truly needed to keep the discussion focused and respectful; repeated misuse may lead to moderation action.

## Seve — 2026-06-26T20:50:16.707000+00:00

YES!!

## Seve — 2026-06-26T20:50:42.493000+00:00

BUT rgtr is not a readable footprintVariant! Try to find a better name (not the codename ideally!)