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Resistor Question

Discussion in 'General Electronics Discussion' started by SparkyCal, May 13, 2020.

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  1. SparkyCal

    SparkyCal

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    Mar 11, 2020
    I bought an assortment of resistors. They are different values, in individual packets- all nicely organized and labelled.

    Most say 10K or 660 R. etc

    But one of them says 6K8 what does that mean 68K? 68R? Neither?

    Thnak-you
     
  2. Bluejets

    Bluejets

    5,124
    1,071
    Oct 5, 2014
    It's a way to identify them without errors.
    Sometimes seen in schematic diagrams and my preferred way of displaying the value.
    In this instance 6K8 means 6,800 ohm.

    Also along the same lines, say 68 ohm(68R) 4.7ohm (4R7) and say a 0.1 ohm (0R1)

    for the suffix letters , check out wiki (K,M etc.) and the differences between say M and m.....consider it homework
     
    Last edited: May 13, 2020
    Cannonball, davenn and Harald Kapp like this.
  3. duke37

    duke37

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    Jan 9, 2011
    Except that K is degrees absolute and k is a thousand. These often get mixed up and m is used for a million when dealing with money.
     
    davenn likes this.
  4. WHONOES

    WHONOES

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    May 20, 2017
    The system you are enquiring about was introduced to eliminate errors as it was far to easy for the decimal point to be missed and the wrong value used instead. The "R" suffix indicates that the value is below 1k and it replaces the omega symbol.
     
    Cannonball likes this.
  5. SparkyCal

    SparkyCal

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    Mar 11, 2020
    Thanks to all for your responses. That was very helpful!
     
  6. bertus

    bertus Moderator

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    Nov 8, 2019
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