DRC errors

Question

I created a model for Tyco connector 6-104078-3, which has 68 round pads with 0.05” spacing, 0.032” diameter, 0.023” drills. The DRC keeps giving me hundreds of “Clearance” errors. I have all clearance settings in DRC equal to 8 mil. I do not understand this: 50 mil spacing minus 32 mil pad diameter = 18 mil clearance, more than twice the minimal setting, but I still get these errors in DRC. Please advice.

Former Member · Accepted Answer

On Tue, 15 Feb 2011, SMD111 wrote to us saying :

>I created a model for Tyco connector 6-104078-3, which has 68 round

>pads with 0.05” spacing, 0.032” diameter, 0.023” drills.

>The DRC keeps giving me hundreds of “Clearance” errors. I have all

>clearance settings in DRC equal to 8 mil.

>I do not understand this:

>50 mil spacing minus 32 mil pad diameter = 18 mil clearance, more than

>twice the minimal setting, but I still get these errors in DRC.

>Please advice.

Most likely the diameter isn't 0.032" because that requires a "restring"

of only 0.0045" which is less than your DRC settings. It's a very tight

connector!

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Rob Pearce http://www.bdt-home.demon.co.uk

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