Help ID an old capacitor?

Discussion in 'General Electronics Chat' started by skanker, Jan 17, 2018.

  1. skanker

    Thread Starter New Member

    Jan 17, 2018
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    Hi Folks

    Im hoping someone can give some advice regarding the value of the large grey/orange capacitor in the image attached?

    I accidentally broke one whilst swapping the IC's during a repair and i have no idea what to replace it with, any advice is much appreciated

    Cheers!
     
  2. bushrat

    Member

    Nov 29, 2014
    209
    58
    Can you zoom in a bit closer and/or post here what is written on it?
     
  3. kubeek

    Expert

    Sep 20, 2005
    5,280
    990
    probably a tantalum cap. If you could get some numbers off it, that would be great.
     
  4. MrChips

    Moderator

    Oct 2, 2009
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    With my keen eyes I see n15.
    This is a 150pF ceramic disc capacitor made by Philips, probably about 50V.
     
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  5. skanker

    Thread Starter New Member

    Jan 17, 2018
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    I've attached an image of the one, i need to replace. It's not fully legible sadly but it looks like one of the following: nTS, nT5, n15 nI5
     
  6. skanker

    Thread Starter New Member

    Jan 17, 2018
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    Thank you Mr Chips, my last post landed seconds after your answer
     
  7. LesJones

    Well-Known Member

    Jan 8, 2017
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    If I am readin the number on it correctly which I think is n15 then I think it is a 150 pF (0.15 nF) ceramic capacitor. (I have some that look the same marked n10 which measure as 100 pF.)

    Edit. I have just seen the picture in post #5 which confirms it is n15.

    Les.
     
  8. skanker

    Thread Starter New Member

    Jan 17, 2018
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    Thank you Les, between yourself and Mr Chips i should be able to get this thing fixed now!

    Many thanks guys
     
  9. skanker

    Thread Starter New Member

    Jan 17, 2018
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    Just to add, will it make much difference if i install a 50v or a 100v depending on availability?
     
  10. MrChips

    Moderator

    Oct 2, 2009
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    Philips 150pF 100V part # 2222 681 70151.
     
  11. bertus

    Administrator

    Apr 5, 2008
    18,595
    3,604
    Hello,

    Do I see an organge top on the capacitor?
    That color orange means a temperature coefficient of 150 negative.
    See table 7 and 8 of the attached PDF.

    Bertus
     
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  12. skanker

    Thread Starter New Member

    Jan 17, 2018
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    Thats a great resource, thanks for sharing Bertus. I'd already ordered the one in the image attached which has a black band and according to the docs you gave a temperature coefficient of 0 × 10−6/K

    I have to be honest and say this means nothing to me tho, Im now looking for a like for like but they seem to be hard to find.

    In your experience, will the one ordered be a suitable replacement?

    The unit in question is a MK3 BFE Filtek Eq circa 1975
     
  13. bertus

    Administrator

    Apr 5, 2008
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  14. skanker

    Thread Starter New Member

    Jan 17, 2018
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    Thanks, thats interesting and confusing at the same time!

    I'm ok repairing my kit when it's a like for like replacement but my experience is novice level at best so when i have issues finding a part i struggle to decide what replacement is best. Im overly cautious knowing my lack of knowledge could easily lead me to cause more damage.

    Anyhow, looks like i've bagged some in the link below. I've looked into the 632 series mentioned above and have found nothing online at all. Will do more searching tomorrow.

    https://www.ebay.co.uk/itm/30x-Kera...682196?hash=item2a7782b914:g:GYsAAOSwUsJYV70X
     
  15. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    The capacitors in the link will work.

    Bertus
     
  16. skanker

    Thread Starter New Member

    Jan 17, 2018
    13
    0
    Hi guys

    I had such good advice last time i asked i have a couple of more parts to ID if you can please take the time to look.

    They are two multicoloured capacitors (green/grey/blue) and (Pink/Yellow/purple) with no written markings and are on the same unit my last question was related too.
    I've look online and cant find anything similar.

    These are the only parts i've not managed to ID so any info is much appreciated.

    Cheers!
     
  17. MrChips

    Moderator

    Oct 2, 2009
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  18. skanker

    Thread Starter New Member

    Jan 17, 2018
    13
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    Super fast! thank you very much Mr Chips and i appreciate the link too. Thats one for the files
     
  19. skanker

    Thread Starter New Member

    Jan 17, 2018
    13
    0
    Back again folks regarding this project as i'm struggling to find replacements for these two caps. Can i ask what you guys would decide on if you were in my position please?

    The ones i ordered have shown up and are so small compared to whats already there and look nothing like them either so they cant be right. Do they have to be tantulum replacements or not and how important is the voltage value when replacing a part like this?




    First one is YELLOW-PURPLE-WHITE-PINK 470pF 35V
    Second one is BLUE-GREY-BLACK-GREEN 6800pF 16V
     
  20. LesJones

    Well-Known Member

    Jan 8, 2017
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    I would dissagree on those values. I think the basic unit is uF
    So YELLOW-PURPLE-WHITE-PINK is 47 x 0.1 = 4.7uF (I agree on the voltage rating.)
    BLUE-GREY-BLACK-GREEN is 68 x 1 = 68uF (I agree on the voltage rating.)
    One of these should do for the 4.7uF
    One of these should do for the 68uF

    Les.
     
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