Square holes in printed circuit boards?

zebra50 · Jun 8, 2012

Hi!

I have seen a couple of circuit boards around with square holes for transformers and other components to sit in / pass through. Like this, for example....

Does anyone know which programmes / manufacturers support boards with square / rectangular holes? Preferably on a mac!

I tried to design a board using Fritz, which is very easy to use, but does not support square holes.

Many thanks

Stewart

zayance · Jun 8, 2012

This can be done in the Milling layer on PCB softwars, Eagle has this layer for example, and the idea is to draw the rectangle with the correct size where you want it and that's that.
I think it can even be done in the Dimension Layer (wich is normally the one used for the contour of the board).
Not aware of Fritz tough....

buildafriend · Jun 8, 2012

why do you want square pads for anything but to indicate polarity?

PRR · Jun 8, 2012

> why do you want square pads

Holes. Not pads.

zebra50 · Jun 9, 2012

Thanks Tony! I think I have to find someone with Eagle. I don't think Fritzing has a milling layer, which is a shame because it is free, and very easy to use.
http://fritzing.org/

Holes. Not pads.

Yes, I want holes for the magnetic components - like where it says 'T1' on the board, only smaller in my case.

Thanks again for the suggestions.

zayance · Jun 9, 2012

Maybe i can help you out? Let me know.

T.

zebra50 · Jun 9, 2012

Thanks Tony - maybe you can! I will send you an email.

Stewart

peterc · Jun 9, 2012

Stewart

For the 5003 PCBs, I made a note of the hole sizes, and the plant did the necessary coding for me.

On the PCB design I put in a cross-hatched area, and said "Hole size: Xmm x Ymm"

Worked fine.

Peter

Square holes in printed circuit boards?

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