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Component identification help

Discussion in 'Datasheets, Manuals and Component Identification' started by Picooz, Nov 1, 2016.

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  1. Picooz

    Picooz

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    Nov 1, 2016
    Hi, This is my first post I have limited experience in repairing electronic items, but I do enjoy trying to repair them. I am trying to repair a eberspacher heating control and I can not identify a component. I think it may be a capacitor, the markings on the component are 100nt 12v. I am hoping that somebody will be able to help me, I have included an image of the component and the circuit board. The board is not complete as I have taken the transistors off for testing. Cheers Steven
     

    Attached Files:

  2. Arouse1973

    Arouse1973 Adam

    5,165
    1,087
    Dec 18, 2013
    Hi Steven, welcome to E.P. It might actually be a surge suppressor and not a capacitor. Is it short circuit? Edit: Or an NTC
    Adam
     
  3. davenn

    davenn Moderator

    13,798
    1,939
    Sep 5, 2009
    hi Steven

    yes, looks like a 100n (0.1uF) capacitor
    use one the save cap value, doesn't matter if the voltage rating is higher

    so is there a reason why you think it's faulty and needs replacing? do you have a capacitance meter?
     
  4. Picooz

    Picooz

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    Nov 1, 2016
     
  5. Picooz

    Picooz

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    Nov 1, 2016
    Hi, thank you for the quick response, I have checked it for short circuit and it seems fine, I have done capacitance test on it and have a reading of 185 nf. Cheers Steven
     
    Last edited by a moderator: Nov 3, 2016
  6. Picooz

    Picooz

    10
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    Nov 1, 2016
    Hi, thank you for the quick response, I have measured it with a capacitance meter and the reading is 185nf, could you help me with the type of capacitor it is? Thank you
     
  7. Arouse1973

    Arouse1973 Adam

    5,165
    1,087
    Dec 18, 2013
    Can you point us to where in the circuit this came from?
    Thanks
    Adam
     
  8. Arouse1973

    Arouse1973 Adam

    5,165
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    Dec 18, 2013
    Out of interest does it read anything on a resistance measurement?
    Thanks
    Adam
     
  9. Picooz

    Picooz

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    Nov 1, 2016
    Hi, yes on a auto range it will gradually climb until it goes out of range. Hope this helps.
     
  10. davenn

    davenn Moderator

    13,798
    1,939
    Sep 5, 2009
    yup just proves its a capacitor rather than a resistive device

    a bit high for a 100n but if it's just being used for power rail bypassing, that doesn't really matter

    it's a ceramic style
     
  11. Picooz

    Picooz

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    Nov 1, 2016
    Hi, the component locates in the c2 slot on the board. Cheers
     
  12. Arouse1973

    Arouse1973 Adam

    5,165
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    Dec 18, 2013
    Yes I thought it seemed a bit high myself. I have never seen a capacitor with the value marked in Nano Farads and that bulge on the back side is indicative of MOVs, NTCs and PTC. That's the reason I discounted it from being a capacitor.
    Adam
     
  13. davenn

    davenn Moderator

    13,798
    1,939
    Sep 5, 2009

    just the lead connection ... common on the older ceramics
     
  14. Picooz

    Picooz

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    Nov 1, 2016
    Hi, cheers for the feedback, I have found a manufacturer date of 1974 on the board, just for interest.
     
    davenn likes this.
  15. davenn

    davenn Moderator

    13,798
    1,939
    Sep 5, 2009
    no harm replacing that cap, 100nF (0.1uF) are very common
    you may have a newer scrap PCB or 2 lying around that you can recover a cap from :)
     
  16. Arouse1973

    Arouse1973 Adam

    5,165
    1,087
    Dec 18, 2013
    LOL I was born in 73, that's probably why :)
    Cheers
    Adam
     
    davenn likes this.
  17. davenn

    davenn Moderator

    13,798
    1,939
    Sep 5, 2009
    you're such a youngin' ;)
     
    Arouse1973 likes this.
  18. Picooz

    Picooz

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    Nov 1, 2016
     
  19. Picooz

    Picooz

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    Nov 1, 2016
    Hi, thank you for the help, I'll get one installed and see how it goes.
     
  20. Picooz

    Picooz

    10
    1
    Nov 1, 2016
    Hi, thank you, I'll get it replaced.
     
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