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Another mystery part

Discussion in 'Electronic Design' started by Don Lancaster, Aug 31, 2012.

  1. I think it is a PTC resettable printed circuit board fuse and have
    zillions of them.

    Beige colored, rectangular 0.40 square by 0.20 thick.
    Two single ended radial leads on 0.2 inch centers
    Shiny dipped epoxy.

    Part number is

    *600
    150
    QU1X

    Other side says TAIWAN.

    Low current resistance is around 8 Ohms.

    What is it, who made it, and what is it worth?

    I suspect these sell for forty cents each.

    --
    Many thanks,

    Don Lancaster voice phone: (928)428-4073
    Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
    rss: http://www.tinaja.com/whtnu.xml email:

    Please visit my GURU's LAIR web site at http://www.tinaja.com
     
  2. tm

    tm Guest

    What happens when you heat it up? Negative or positive temp coef? Could it
    be used to limit inrush current to a off line switcher?



    tm
     

  3. Gets warm and does its PTC thing above 300 ma.

    Still would like to know who makes it and its actual ratings.

    --
    Many thanks,

    Don Lancaster voice phone: (928)428-4073
    Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
    rss: http://www.tinaja.com/whtnu.xml email:

    Please visit my GURU's LAIR web site at http://www.tinaja.com
     

  4. Gets warm and does its PTC thing above 300 ma.

    Still would like to know who makes it and its actual ratings.

    --
    Many thanks,

    Don Lancaster voice phone: (928)428-4073
    Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
    rss: http://www.tinaja.com/whtnu.xml email:

    Please visit my GURU's LAIR web site at http://www.tinaja.com
     
  5. spamtrap1888

    spamtrap1888 Guest


    Did you look on the TE website? I suspect this is a 600V, 150mA
    (carrying current) Raychem Polyswitch, whose resistance doubles at
    300mA. QU1X should be the lot code. The URLs are all gigantic or I
    would include them.

    We used to use polyswitches eons ago; no idea what they cost nowadays.
     
  6. Raychem/TE parts have RUE on them. Perhaps it's an early Rachem part.

    Or maybe it's a Littlefuse part
    <http://www.littelfuse.com/data/en/Data_Sheets/Littelfuse_PTC_600R.pdf>
    <note the part marking 'lf600'>
    They are UL so you can lookup the UL file number and see if there is a
    document for the part.

    Cheers
     
  7. legg

    legg Guest

    There's no UL listing with those markings, in any product category.

    Odd. This is pretty much automatic with PTC marketing. There are over
    40 Taiwanese mfrs listing their product markings under XGPU2
    thermistor-type devices (no actual UL logo required here).

    Do the leads fall off in protection mode? Wouldn't stress it above
    30V, to be fair.

    RL
     
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