Restring-Breite bei Footprint

Layout Footprints
1

Hallo,

Wenn ich das Symbol: LED_RKGB wähle und dazu den Footprint: LED_THT:LED_D5.0mm-4_RGB unverändert nehme, kommt im DCR die Meldung:

[annular_width]: Restring-Breite (Einschränkungen aus Platinenkonfiguration min Restring-Breite 0,7000 mm; tatsächlich 0,0850 mm)
    Rule: Einschränkungen aus Platinenkonfiguration; error
    @(249,8052 mm, 114,1938 mm): Durchsteckpad 1 [unconnected-(D1-RA-Pad1)] von D1

Warum kommt diese Fehlermeldung, ich habe weder am Symbol noch am Footprint etwas geändert.?

Ist dieser Fehler relevant für die Platinenerstellung bei Aisler?

2

This is an English language forum. You should use machine translation to translate your post

3

Hello,

If I select the symbol: LED_RKGB and take the footprint: LED_THT:LED_D5.0mm-4_RGB unchanged, the message appears in the DCR:

[annular_width]: Annular width (board setup constraints min annular width 0.1000 mm; actual 0.0850 mm)
    Rule: board setup constraints; error
    @(112.1923 mm, 93.8947 mm): PTH pad 1 [Net-(D1-RK)] of D4

Why does this error message appear, I have not changed anything in the symbol or the footprint?

Is this error relevant for the PCB creation at Aisler?

4

Annular Width is the distance between the side of a pad, and the side of a drilled hole. It basically sets the tolerance for mis-alignment between pads and drilled holes.

In the board setup, this is an absolute minimum value (in your case 0.1mm) and it should set to the capabilities of your board manufacturer (0.1mm is already quite small. I’d rather set it to 0.2mm or so, but you should really look this up in your PCB manufacturer’s capabilities).

Yes, (too) small annular width is a pretty serious issue. You should not ignore it.

So why does pad 1 of D4 only have an annular width of 0.085mm?

5

I don’t know.
I just selected the symbol LED_RKGB,
added the footprint LED_THT:LED_D5.0mm-4_RGB
and then updated the PCB Editor.
That’s why I’m wondering why an unchanged footprint from /app/extensions/Library/footprints/LED_THT.pretty doesn’t meet the requirements.

6

Looking at the V9.0.1 library and the Kingbright datasheet.
0.9mm hole is correct.
The pads are 1.07 wide, so the annular is 0.085mm - very thin
Pad to pad gap is 0.2mm

7

How can i fix this error?

8

The Kingbright datasheet has warnings about stopping the leads shorting. They are really close together.

If you can, use one of the alternate footprints, either the staggered leads or the spaced leads. Either of these keep the pads much further apart and reduce the shorting risks. The benefit is easier PCB manufacture. The negative is having to form the LED leads and a little more PCB space used.