Pattern for surface mount shunt

Making your own components and patterns, organizing and using libraries.
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rovman
Posts: 8
Joined: 24 Nov 2012, 04:07

Pattern for surface mount shunt

#1 Post by rovman » 02 Jun 2017, 06:50

I made a pattern for a surface mount current shunt. It has a large square pad at each end with a thin rectangular pad overlayed on each for the current sensing connection. The problem is that DipTrace complains that the pads have zero space between them. I have had similar problems with other components such as mini fuse holders that have two pins connected together at each end requiring a rectangular pad with two holes (2 pins connected together).
Any suggestions on dealing with such components?
The shunt is DigiKey YAG4103CT-ND, 0.002 ohm, 5W (Yageo PU5931FKMT50R002L)
The fuse holder is DigiKey 36-3568-ND

Tomg
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Posts: 2028
Joined: 20 Jun 2015, 07:39

Re: Pattern for surface mount shunt

#2 Post by Tomg » 02 Jun 2017, 07:34

You may be over-thinking the solution. (Or am I under-thinking it?) I believe all you need is a two-pad pattern. How you handle the schematic symbol is another story, of course. For the fuse holder, try a four-pad pattern.
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shunt.gif
shunt.gif (14.16 KiB) Viewed 275 times
3568.gif
3568.gif (47.4 KiB) Viewed 275 times
Tom

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