Replacement Caps, Elektrolyt vers Foil

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  • arrudi
    New Member
    • Jun 2010
    • 8
    #1

    Replacement Caps, Elektrolyt vers Foil

    Hallo,
    is it advisable to replace an Eletroytic Cap with a Foil Cap?
    I am replacesing E-Caps in a switching PS used in a DBVT-Receiver.
    Next to the 10µf 400V Cap is a 2.2 µf 50V E-Cap RM 5mm located.
    Can I exchange this one with a 2.2 uF 50V MK Polyester Foil Cap, or is an E-Cap mandatory?

    The switching device is a 8 pin DIP socket 5H02659R (VE25) device.
    Does anyone know a replacement device? The unit has 10W.

    Thank You very much.
    arrudi
    Tags: None
    • PCBONEZ
      Grumpy Old Fart
      • Aug 2005
      • 10661
      • USA
      #2
      Re: Replacement Caps, Elektrolyt vers Foil

      Compare Ripple and ESR.
      Mann-Made Global Warming.
      - We should be more concerned about the Intellectual Climate.
      -
      Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
      - Dr Seuss
      -
      You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
      -

        Comment

        • Longbow
          Badcaps Veteran
          • Jun 2011
          • 623
          • USA
          #3
          Re: Replacement Caps, Elektrolyt vers Foil

          If possible, could you post a schematic of this unit? Capacitors that we call polyester types use foil and a dialectric rolled up together. These caps are usually found below 1 uF and are used mostly in audio applications due to inductance and dialectric loss at high frequency.

          Multi-layer ceramic capacitors might be a good solution for replacing 1 uF and below.
          Is it plugged in?

            Comment

            • arrudi
              New Member
              • Jun 2010
              • 8
              #4
              Re: Replacement Caps, Elektrolyt vers Foil

              Hallo,
              sorry, I do not have a schematic.
              The IC is a Fairchild KA5H02659RN Power Switch. The capacitor is connected between Pin 2 (GND) and Pin 3 (Vcc). I think, I will stay with an Eletrolytic Capacitor.
              Changing the value from 2.2 uF to 3.3 uF should be ok.
              The old capacitor is a NIC Components NRSA type.
              Thank You for the answer.

              arrudi

                Comment

                • PCBONEZ
                  Grumpy Old Fart
                  • Aug 2005
                  • 10661
                  • USA
                  #5
                  Re: Replacement Caps, Elektrolyt vers Foil

                  NIC Components is one of the 'good brands', why are you changing it?
                  .
                  Mann-Made Global Warming.
                  - We should be more concerned about the Intellectual Climate.
                  -
                  Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                  - Dr Seuss
                  -
                  You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                  -

                    Comment

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