What does number 4 convert to on a ceramic capacitor?

Discussion in 'General Electronics Chat' started by stanman11, Jul 26, 2011.

  1. stanman11

    Thread Starter Member

    Nov 23, 2010
    230
    4
    Repaig a board and this capacitor is dead. All it says is 4. and i cant find any like that online so i need to vigure out its pf and volts.

    P.S. does a green ceramic and brown make a difference? its green, i think it can be the tan brown ones?
     
  2. KJ6EAD

    Senior Member

    Apr 30, 2011
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    That's not enough information to be sure but if it's a very small disk, the value is probably 4 pF with a 50V rating though that's not a standard value. Ceramic capacitors have a very low failure rate unless crushed so another possiblility is that you're mistaking a 4A pico fuse or even a diode for an axial lead capacitor. Can you post a clear close up picture?
     
    Last edited: Jul 26, 2011
  3. stanman11

    Thread Starter Member

    Nov 23, 2010
    230
    4
    a prong busted out the side taking a chuck of ceramic with it. I cant really get a picture. I dont have the car apart right now. I also need to replace a diiode that is brown black green but the value on the is 4.7 so im set there

    the capacitor says 4. doesnt say anything else. dont know where im supposed to get one
     
  4. stanman11

    Thread Starter Member

    Nov 23, 2010
    230
    4
  5. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    Will be really helpful if you can take a picture. Where the piece of ceramic is missing there might have been another number, right? Where is the "4". On the left or on the right?
    Is something written on the board from which one could conclude what kind of component it is, like C something?
     
  6. stanman11

    Thread Starter Member

    Nov 23, 2010
    230
    4
    no the prong didnt take anything off. the 4 is in the center of it. I dont have time to take a pic. I gotta pack for a trip really soon. The board says c10 as a placment
     
  7. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    Ok. so it's really 4pF. Newark and digikey have them (problem shipping cost), your local electronics store may have them too.

    have a nice trip
     
  8. KJ6EAD

    Senior Member

    Apr 30, 2011
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  9. stanman11

    Thread Starter Member

    Nov 23, 2010
    230
    4
    I Still cant find this capacitor any where. I have 2 of these circuit boards. The older model had a brownish tan capacitor and this newer one has a green capacitor. both are ceramic


    [​IMG]
     
  10. #12

    Expert

    Nov 30, 2010
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    Oh yeah. 4pf is a reasonable value in that position.
     
  11. stanman11

    Thread Starter Member

    Nov 23, 2010
    230
    4
    I cant find a 4pf. whats an alternative? theres no such thing as 4 any more.

    Every time i search for 4pf i get 104 at 0.1uf capacitors which is 10x4 isnt it?
     
  12. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    yes, it is 10X10000pF = 0.1uF.

    but there are 4pF, how about THIS one.
     
  13. stanman11

    Thread Starter Member

    Nov 23, 2010
    230
    4
    I need an alternative because theres no such thing any more. this board was built in the 90's
     
  14. #12

    Expert

    Nov 30, 2010
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    That must have been a "cross post".
     
  15. stanman11

    Thread Starter Member

    Nov 23, 2010
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    I shoulda just checked digi key. they always have everything
    I think that will work. thnx
     
  16. praondevou

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    Jul 9, 2011
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    Unfortunately not everything... Especially not the components I'm looking for...
     
  17. stanman11

    Thread Starter Member

    Nov 23, 2010
    230
    4
    which ones are you looking for? I got tons of stay laying around.
    well i used to have tons. my wife made me throw most of the stuff i wouldnt use in the trash.
    i have some sorts of stuff then lol
     
  18. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    FSAR001B from Fairchild. Noone has it.... never mind. :D
     
  19. stanman11

    Thread Starter Member

    Nov 23, 2010
    230
    4
    What exactly is it?
     
  20. stanman11

    Thread Starter Member

    Nov 23, 2010
    230
    4
    ok i see what it is
     
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