Resistors

Discussion in 'General Electronics Chat' started by kballing, Aug 4, 2007.

  1. kballing

    Thread Starter Member

    Jun 18, 2007
    18
    0
    Hey, I have this schematic for a keyboard amp that I am going to build. In it there are resistors labeled as follows:

    R44 FU 1/4W 4.7

    R63 NF 1/2W 1K

    What is the NF and FU supposed to mean?
     
  2. nanovate

    Distinguished Member

    May 7, 2007
    665
    1
    I can't access the schematic. But it might have to do with "fusing" and "non-flammable".


    John
     
  3. nanovate

    Distinguished Member

    May 7, 2007
    665
    1
    Usually you specify this type of resistor when you want to ensure a failure mode will not cause a resistor to catch fire :)

    Look at Phoenix Passives for some example parts:

    http://www.phoenixpassives.com/

    I have used them on some designs.
     
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