Author Topic: Curious clearance issue with xtal  (Read 2959 times)

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Offline 8086Topic starter

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Curious clearance issue with xtal
« on: November 19, 2012, 05:23:21 pm »


I've added the 4-pin crystal in the picture - and now, even though my clearance rules are 0.2mm min, it's constantly complaining about there being a collision between the crystal, the IC, and the resistor. If I move the crystal away from either by about the same distance as the width of the crystal, it's fine, but then it's miles away! The footprint for the crystal doesn't have any hidden exxtended parts, either, the extremes of the footprint are literally the corners of the pads.

Any ideas what's going on here?

cheers
 

Offline gxti

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Re: Curious clearance issue with xtal
« Reply #1 on: November 19, 2012, 10:56:31 pm »
Yep, it's stupid. Try adding a 3D body to the crystal and it should use that instead.
 

Offline AlfBaz

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Re: Curious clearance issue with xtal
« Reply #2 on: November 20, 2012, 02:04:24 pm »
I had something similar happen to me. single clicked the component in question (funnily enough it too was a crystal) thereby selecting it and the selection outline revealed that the perceived body was larger than it should be.

I hadn't created a 3D body for this xtal but selected "manage 3d bodies for component" and found it was creating a body outline from the overlay extremes, which included the No1 pin marker. Might pay to look there
 

Offline 8086Topic starter

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Re: Curious clearance issue with xtal
« Reply #3 on: November 20, 2012, 02:09:47 pm »
I created a 3d body and all was well. thanks guys.
 


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