Does 470 means it is a 470 pf capacitor or 47 pf?

Discussion in 'Electronic Basics' started by dingd@ferris.edu, Mar 21, 2007.

  1. Guest

    I have a capacitor which has the mark on its body "470 k 50v."
    Does 470 mean it is a 470 pf or a 47 pf capacitor? Both are possible?
    God bless!

    Daniel
     
    , Mar 21, 2007
    #1
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  2. Phil Allison Guest

    <>
    >
    >I have a capacitor which has the mark on its body "470 k 50v."
    > Does 470 mean it is a 470 pf or a 47 pf capacitor? Both are possible?
    > God bless!



    ** Though very rare - I have a bag full of various value Silver Mica caps
    that use the "0" to show there are no naughts!!.

    Eg: 330J = 33 pF, 5%.

    Mind numbingly stupid.

    Only a DMM with capacitance range will settle it.




    ........ Phil
     
    Phil Allison, Mar 21, 2007
    #2
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  3. John Fields Guest

    On Wed, 21 Mar 2007 15:22:02 +1100, "Phil Allison"
    <> wrote:

    >
    ><>
    >>
    >>I have a capacitor which has the mark on its body "470 k 50v."
    >> Does 470 mean it is a 470 pf or a 47 pf capacitor? Both are possible?
    >> God bless!

    >
    >
    >** Though very rare - I have a bag full of various value Silver Mica caps
    >that use the "0" to show there are no naughts!!.
    >
    >Eg: 330J = 33 pF, 5%.
    >
    >Mind numbingly stupid.


    ---
    Not really, just look at a 10 ohm +/-5% carbon film resistor.
    ---

    >Only a DMM with capacitance range will settle it.


    ---
    Without a capacitance range, so will this:

    Where 33pF in parallel with 10 megohms is the scope probe.


    --
    JF
     
    John Fields, Mar 21, 2007
    #3
  4. Phil Allison Guest

    "John Fields"
    "Phil Allison"
    >><>
    >>>
    >>>I have a capacitor which has the mark on its body "470 k 50v."
    >>> Does 470 mean it is a 470 pf or a 47 pf capacitor? Both are possible?
    >>> God bless!

    >>
    >>
    >>** Though very rare - I have a bag full of various value Silver Mica
    >>caps
    >>that use the "0" to show there are no naughts!!.
    >>
    >>Eg: 330J = 33 pF, 5%.
    >>
    >>Mind numbingly stupid.

    >
    > ---
    > Not really, just look at a 10 ohm +/-5% carbon film resistor.
    > ---



    ** How mind numbingly * STUPID * of John Fields.

    The cap example is appallingly ambiguous.

    His resistor example is not.



    ........ Phil
     
    Phil Allison, Mar 21, 2007
    #4
  5. Rich Grise Guest

    On Tue, 20 Mar 2007 20:45:37 -0700, dingd wrote:

    > I have a capacitor which has the mark on its body "470 k 50v." Does 470
    > mean it is a 470 pf or a 47 pf capacitor? Both are possible? God bless!
    >


    It reads the same as the resistor color code; it's expressed in numbers
    rather than color bands. The first digit is 4, the second digit is 7, and
    it's followed by zero zeros (or you could say "times ten to the zeroth
    power", which is 1), so it's 47 pf. The K indicates either the
    temperature coefficient or the dielectric type - I'd have to look that up.

    Just for reference, a 470 pf cap would be marked "471", and so on.

    The "50V" should be fairly self-explanatory. :)

    Cheers!
    Rich
     
    Rich Grise, Mar 21, 2007
    #5
  6. Phil Allison Guest

    "Rich Grise"
    > dingd wrote:
    >
    >> I have a capacitor which has the mark on its body "470 k 50v." Does
    >> 470
    >> mean it is a 470 pf or a 47 pf capacitor? Both are possible? God bless!
    >>

    >
    > It reads the same as the resistor color code;



    ** But with a monstrous ambiguity that is not there with resistors.


    > Just for reference, a 470 pf cap would be marked "471", and so on.




    ** So if you see a ceramic cap marked " 470 K" - what is it's value ?

    As usual - you utterly missed the point.



    ........ Phil
     
    Phil Allison, Mar 22, 2007
    #6
  7. MassiveProng Guest

    On Wed, 21 Mar 2007 19:09:02 GMT, Rich Grise <> Gave
    us:

    >On Tue, 20 Mar 2007 20:45:37 -0700, dingd wrote:
    >
    >> I have a capacitor which has the mark on its body "470 k 50v." Does 470
    >> mean it is a 470 pf or a 47 pf capacitor? Both are possible? God bless!
    >>

    >
    >It reads the same as the resistor color code; it's expressed in numbers
    >rather than color bands. The first digit is 4, the second digit is 7, and
    >it's followed by zero zeros (or you could say "times ten to the zeroth
    >power", which is 1), so it's 47 pf. The K indicates either the
    >temperature coefficient or the dielectric type - I'd have to look that up.
    >
    >Just for reference, a 470 pf cap would be marked "471", and so on.
    >
    >The "50V" should be fairly self-explanatory. :)
    >



    WOW. You got another one right!

    That's two in one week!
     
    MassiveProng, Mar 22, 2007
    #7
  8. Eeyore Guest

    MassiveProng wrote:

    > On Wed, 21 Mar 2007 19:09:02 GMT, Rich Grise <> Gave
    > us:
    >
    > >On Tue, 20 Mar 2007 20:45:37 -0700, dingd wrote:
    > >
    > >> I have a capacitor which has the mark on its body "470 k 50v." Does 470
    > >> mean it is a 470 pf or a 47 pf capacitor? Both are possible? God bless!
    > >>

    > >
    > >It reads the same as the resistor color code; it's expressed in numbers
    > >rather than color bands. The first digit is 4, the second digit is 7, and
    > >it's followed by zero zeros (or you could say "times ten to the zeroth
    > >power", which is 1), so it's 47 pf. The K indicates either the
    > >temperature coefficient or the dielectric type - I'd have to look that up.
    > >
    > >Just for reference, a 470 pf cap would be marked "471", and so on.
    > >
    > >The "50V" should be fairly self-explanatory. :)
    > >

    >
    > WOW. You got another one right!
    >
    > That's two in one week!


    Actually K is 10% tolerance.

    Graham
     
    Eeyore, Mar 22, 2007
    #8
  9. NRen2k5 Guest

    Phil Allison wrote:
    > "Rich Grise"
    >> dingd wrote:
    >>
    >>> I have a capacitor which has the mark on its body "470 k 50v." Does
    >>> 470
    >>> mean it is a 470 pf or a 47 pf capacitor? Both are possible? God bless!
    >>>

    >> It reads the same as the resistor color code;

    >
    >
    > ** But with a monstrous ambiguity that is not there with resistors.
    >
    >
    >> Just for reference, a 470 pf cap would be marked "471", and so on.

    >
    >
    >
    > ** So if you see a ceramic cap marked " 470 K" - what is it's value ?
    >
    > As usual - you utterly missed the point.
    >
    >
    >
    > ....... Phil


    How nice of you to contribute.
     
    NRen2k5, Mar 22, 2007
    #9
  10. Rich Grise Guest

    On Thu, 22 Mar 2007 03:40:49 +0000, Eeyore wrote:
    > MassiveProng wrote:
    >> On Wed, 21 Mar 2007 19:09:02 GMT, Rich Grise <> Gave
    >> >On Tue, 20 Mar 2007 20:45:37 -0700, dingd wrote:
    >> >
    >> >> I have a capacitor which has the mark on its body "470 k 50v." Does 470
    >> >> mean it is a 470 pf or a 47 pf capacitor? Both are possible? God bless!
    >> >
    >> >It reads the same as the resistor color code; it's expressed in numbers
    >> >rather than color bands. The first digit is 4, the second digit is 7, and
    >> >it's followed by zero zeros (or you could say "times ten to the zeroth
    >> >power", which is 1), so it's 47 pf. The K indicates either the
    >> >temperature coefficient or the dielectric type - I'd have to look that up.
    >> >
    >> >Just for reference, a 470 pf cap would be marked "471", and so on.
    >> >
    >> >The "50V" should be fairly self-explanatory. :)

    >>
    >> WOW. You got another one right!
    >>
    >> That's two in one week!

    >
    > Actually K is 10% tolerance.
    >


    Well, like the time when I was losing miserably at poker, and quoted my
    Mom: "Unlucky in cards, lucky in love", some guy said, "Yeah, and one out
    of two ain't bad!" ;-)

    Thanks!
    Rich
     
    Rich Grise, Mar 22, 2007
    #10
  11. Rich Grise Guest

    On Thu, 22 Mar 2007 08:55:27 -0400, NRen2k5 wrote:
    > Phil Allison wrote:
    >> "Rich Grise"
    >>> dingd wrote:
    >>>
    >>>> I have a capacitor which has the mark on its body "470 k 50v." Does
    >>>> 470
    >>>> mean it is a 470 pf or a 47 pf capacitor? Both are possible? God bless!
    >>>>
    >>> It reads the same as the resistor color code;

    >>
    >> ** But with a monstrous ambiguity that is not there with resistors.
    >>
    >>> Just for reference, a 470 pf cap would be marked "471", and so on.

    >>
    >> ** So if you see a ceramic cap marked " 470 K" - what is it's value ?
    >>
    >> As usual - you utterly missed the point.

    >
    > How nice of you to contribute.


    It's OK. I've been ignoring Phalluson for years.

    Cheers!
    Rich
     
    Rich Grise, Mar 22, 2007
    #11
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