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Desperately seeking old caps

Wanted: Discussion in 'For Sale / Wanted' started by Rich Brown, Aug 31, 2018.

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  1. Rich Brown

    Rich Brown

    11
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    Jun 8, 2018
    I badly need at least two older capacitors: 50 VDC, 8700 μf; can-type with three leads, one nonconnected, placed radially; distance between + and - leads is about 14.5mm. The radius is 30mm and the height above the PCB about 64mm.

    ELNA was the original manufacturer, I've been checking through manufacturer and distributor websites, eBay, etc., with no luck. I'd be most grateful if someone could point me to more resources.
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,448
    2,809
    Jan 21, 2010
    Why?

    Do you want something that looks original?

    If you've removed a bad part, there is the option of opening it up, emptying it out and placing a modern part inside.

    Another option is to leave there faulty part in place and put a modern part (which is likely much smaller) in an inconspicuous place.

    In retrospect, that value doesn't sound too much like a vintage part. Have you tried searching on digikey's site (by physical attribute)?
     
    davenn likes this.
  3. kellys_eye

    kellys_eye

    4,275
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    Jun 25, 2010
    Otherwise known as 'stuffing' and a popular method amongst the vintage restoration crowd.
     
  4. Rich Brown

    Rich Brown

    11
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    Jun 8, 2018
    Appearance is irrelevant; I just threw in the dimensions for cross-reference. The only crucial items are the values, although it would be nice if the terminal spacing matched the PCB.

    I have in fact been through the Digi-keys charts about 3 times, and the 50 vdc/8700 mfd combination seems to be extinct there as well as everywhere else. I've come across a few 8700 mfd rated at 40 vdc, but these are for my JVC RX-450 receiver and I don't want to fry anything. I'm a DIY guy and don't have that much knowledge of tolerances. Could I use a 40 volt cap safely?
     
  5. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,448
    2,809
    Jan 21, 2010
    It's hard to know if a lower voltage rated capacitor would be acceptable. However a higher voltage and/or a slightly higher capacitance (say 10,000uF) should be fine.
     
  6. kellys_eye

    kellys_eye

    4,275
    1,146
    Jun 25, 2010
    10,000μF 63V would be appropriate. They'll be a lot smaller (physically) than the originals so easy enough to fit. If they are board-mounted you could even drill a hole to cable-tie them down.
     
  7. Rich Brown

    Rich Brown

    11
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    Jun 8, 2018
    Thanks, *Steve*. Those are the kinds of details I'm fuzzy on.
     
  8. Rich Brown

    Rich Brown

    11
    1
    Jun 8, 2018
    Thanks, kellys_eye. I believe I've seen that combination of values.
     
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