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Please help indentify component....

Discussion in 'Electronic Basics' started by royalmp2001, Dec 7, 2005.

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  1. royalmp2001

    royalmp2001 Guest

    Hi everyone,
    I have a job lot of these components....they are the shape and size of
    1/4W resistors but are sky blue in color and have the following
    My multimeter reads 3.39Kohms in either direction, the diode test range
    reads 0.58V in either direction and I can't seem to get consistant
    readings on my capacitance range.
    What are they please?
  2. Andrew Holme

    Andrew Holme Guest

    Sounds like a 3400-ohm resistor. 3401 probably means 340 * 10^1.
  3. Ken Moffett

    Ken Moffett Guest

    Seems like I've seen inductors on PCB's that looked like resistors, but
    were a blue-green color.
  4. PeteS

    PeteS Guest

    RN55C is a range of resistors made by Vishay (Dale). The part you have
    is a 3.4k ohm (3401, 3 significant digits, 1 multipler digit) Mil Spec
    1% device.


  5. Pooh Bear

    Pooh Bear Guest

    Thermistor ? Easy to check. See if the resistance changes with temp.

  6. neil

    neil Guest

    I think the RN55C series is 0.1% ?
  7. PeteS

    PeteS Guest

    There was another related family that is 0.1%, but the F suffix
    specifies a 1% part here.


  8. tlbs

    tlbs Guest

    I use them in my designs regularly, where I work.

    They are definitely resistors, metal film, 3400 Ohms, 50 ppm tempco
    (the 'C' after 55), 1% (the 'F' suffix), rated for 1/4 W in commercial
    applications or 1/8 W in military applications. BEI is the
    manufacturer, and the 'J' is a suffix put on by BEI probably to
    designate a lead finish.

    Go to to get the data sheet.

  9. Rich Grise

    Rich Grise Guest

    Precision MIL-spec resistors: for
    examples, but the 3401 is 3400 ohms, which you seem to have verified.
    The FJ is probably temperature coefficient and some kind of flameproof
    spec, and BEI is a manufacturer's logo.

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