A funny marking in a schematic

Discussion in 'General Electronics Chat' started by dtekumse, Feb 2, 2016.

  1. dtekumse

    Thread Starter New Member

    Dec 15, 2015
    9
    1
    Hello,

    sorry to bother about this trivial thing, but I just couldn't realize this on my own.

    Namely, there is a resistor in the schematic - and it is marked as "0R00"... What does this mean?

    The only explanation I could get my mind on was that it is a short circuit... but that one does not make sense, as the resistor is definitely there - why would it be 0 then?

    Thanks in advance.

    Best regards.
     
  2. dl324

    Distinguished Member

    Mar 30, 2015
    3,249
    626
    0R00 means 0.00Ω. They are sometimes used as jumpers.
     
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  3. ISB123

    Well-Known Member

    May 21, 2014
    1,239
    527
    It's a link or jumper.
     
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  4. joeyd999

    AAC Fanatic!

    Jun 6, 2011
    2,689
    2,750
    A zero ohm resistor is commonly used as a jumper.

    I use them all the time to link "optional" parts of a circuit together. In this way, I can have one PCB fab that performs multiple functions depending on how it is populated.
     
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  5. alfacliff

    Well-Known Member

    Dec 13, 2013
    2,449
    428
    automatic part placement machines use 0 ohm resistors as jumpers. it makes it easier for them to handle. just a piece of wire with a resistor body on it.
     
  6. dtekumse

    Thread Starter New Member

    Dec 15, 2015
    9
    1
    Thank you all very much.

    Best regards.
     
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