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How long do metal and carbon film resistors last?

  1. Dec 3, 2009 #1
    Hello,

    I've read that metal film resistors are better than carbon film because they're resistance remains constant even when they heat up from being soldered. And I know they're suppose to be more precise with a 1% variance instead of 5% of the carbon films.

    I know capacitors go bad - do resistors? What is the shelf life of the carbon films and the metal films?
    In your opinion, is it worth paying more for the metal films for the advantages? Specifically, for longer-term storage and being used in applications that use a high frequency.

    Thanks
     
  2. jcsd
  3. Dec 4, 2009 #2
    Seems like it's mostly a function of environmental factors: http://en.wikipedia.org/wiki/Resistor#Failure_modes

    I very much doubt that the average resistor won't make at least 15 years in the right conditions.
     
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