What size thickness for single sided PCB?

Discussion in 'General Electronics Chat' started by spinnaker, Feb 15, 2010.

  1. spinnaker

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    I have a couple of projects pending. One is a power supply 30V at 1 amp. The other a PIC project 5VDC very low current.

    What thickness of copper should I use? Are there other things to consider other than just current? In other words, what is the advantage of a thicker copper. How thin should I go?
     
  2. retched

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    The thinner copper clad, the wider you will need to draw your higher voltage traces.

    So, as long as you have room on the board, you can use 1oz for a whole lot of projects.

    If you only have room for a small footprint board, you may want to use 2oz board to get larger traces in smaller areas.

    Someone probably has a chart or equation on trace size.
     
  3. BMorse

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    Sep 26, 2009
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    1 oz copper, and 1/16" thick is standard for most PCBs, unless very low power and small then I go with the 1/32" thick.
     
  4. spinnaker

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    Thanks once again everyone.

    So this would be good for most projects? He does not have the weight. Does that equate into the other numbers somehow?

    I guess maybe I should ask, what is meant by 1 oz?
     
  5. retched

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    the Ounce size is the amount of copper per square foot of board. so 1oz perSqFt
     
  6. spinnaker

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    So the link I posted, anyway to tell if it is 1oz?
     
  7. retched

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    no.. no way to tell from the ad. Send him an email, and let us know.
     
  8. spinnaker

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    Thanks. Just sent hum another email Seems like a pretty good price if it is quality material.

    How do I know it is is really 1 oz (if that is what he says it is)? I mean after I buy it.
     
  9. retched

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    There are some etching tests you can do. I don't remember the exact times and temperatures. But I think it was along the lines of .... 1cm square of board in 25deg Celsius ferric chloride should dissolve half oz in 2min, 1oz in 4min and 2oz in 8 min.
     
  10. Wendy

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    I wouldn't overthink this one too much. It is possible you may make a mistake, but the odds are it won't matter.

    If you have a trace that is too high resistance you can lay thin wire over it (soldered as part of the trace).

    The only application I've found where it really matters is things like RF traces, where you are trying to make a transmission line in the PCB. I've made some dandy oscillators that were meant to be amplifiers because of it.
     
  11. SgtWookie

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  12. spinnaker

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    Yeah, he gets a 100% rating so I guess if he says it is 1oz it is 1oz. But he did not say how to tell because it is not in the ad. :)
     
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