Author Topic: Electrical clearance from component body  (Read 865 times)

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Offline ManulTopic starter

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Electrical clearance from component body
« on: June 28, 2022, 04:52:25 pm »
Hi. I have a polygon pour (gnd) on my board. I want to make a clearance rule from the component body itself, not from it's pads, so polygone is not poured around the whole component equaly. So far I can not see how to do it. It's like half electrical, half mechanical rule. Do any of you have an idea?

Thanks.
 

Offline thm_w

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Re: Electrical clearance from component body
« Reply #1 on: June 28, 2022, 08:59:11 pm »
What about drawing it on the keepout layer of the component footprint?

https://www.altium.com/documentation/altium-designer/object-specific-keepouts-pcb?version=21
https://www.altium.com/documentation/altium-designer/pcb-region-keepout?version=21

I realize this is not automated, but if its a complicated shape you could export the 2D profile using other software, and import that into altium.
AFAIK its only possible to have clearance from 3D bodies to other 3D bodies (PCB board in its entirety being a body).

https://www.altium.com/documentation/knowledge-base/altium-designer/can-you-set-electrical-clearance-in-the-design-rules-for-the-route-tool-path

https://designhelp.fedevel.com/forum/main-forum/altium/18040-component-clearance-rule-component-and-3d-body
« Last Edit: June 28, 2022, 09:01:46 pm by thm_w »
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Offline ManulTopic starter

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Re: Electrical clearance from component body
« Reply #2 on: June 28, 2022, 09:46:20 pm »
What about drawing it on the keepout layer of the component footprint?

Good idea. At least the keepout will always be there when component is placed or moved. That seems like a solid solution, the only downside, that it requires manual editing of footprint.

I was surprised, that I can't do clearance from 3D body. Seems like obvious and simple. Add a rule, set designator, set clearance to some net and that's it. No pour under or close to that component wherever I place it or move it. Hmm...
 


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