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| Reply To: | (Designers Council Forum) |
| Date: | Wed, 18 Mar 2015 18:39:48 +0000 |
| Content-Type: | text/plain |
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The magic answer is (as stolen from D. Pauls) IT DEPENDS... on where in the design spectrum you are working.
We do teardrop if we are at less than 4/4 tr/sp and at the low end of the spectrum for 2 mil annulus and requiring no breakout (Mil-spec designs). With bigger annular rings, wider traces, and commercial breakout requirements we do not.
Jeffrey McGlaughlin, C.I.D.
Engineering Designer
Avionics Systems & Tech Refersh
Office: 614.424.7582| Fax: 614.458.7582
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Battelle
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Columbus Ohio 43201-2693
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-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Jack Olson
Sent: Wednesday, March 18, 2015 2:18 PM
To: [log in to unmask]
Subject: [DC] Question of the Week - Teardropping
INFORMAL POLL:
How many of you designers routinely add teardropping or keyholing or
snowmans(?)
or any other form of copper "pad to trace" fillet to your conductive layers?
(I would also be interested to know how many DON'T,
if you are brave enough to confess in public...)
thanks,
Jack
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