what is the voltage rating of this capacitor?

Discussion in 'The Projects Forum' started by onlyvinod56, Mar 11, 2011.

  1. onlyvinod56

    Thread Starter Active Member

    Oct 14, 2008
    362
    1
    hello.

    What is the voltage rating of the capacitor shown in the attachment?

    A capacitor rated 0.1uF/100V is used for IR2110 mosfet driver in a schematic for HIGH side mosfet.
    The DC voltage for the mosfet bridge is 200Vdc.
     
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  2. Aaisha Siddiqa

    New Member

    Mar 11, 2011
    2
    0
    if a capacitor is rated at 1uF/63V what does it mean??

    technically what does it signify??
     
  3. Aaisha Siddiqa

    New Member

    Mar 11, 2011
    2
    0
    can u please clear my doubt sir
     
  4. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Onlyvinod,
    If the voltage rating isn't marked on that ceramic disc cap, assume 50v.

    Aaisha,
    You are hijacking onlyvinod's topic. However, your capacitor will have a nominal capacitance of 1uF (one microfarad) within some percentage (aluminum electrolytic caps can vary significantly) and the dielectric is rated for operation at up to 63v.

    If you use it in a circuit where the peak (maximum) voltages across the cap exceed 63v, the dielectric between the capacitor's plates will break down, and current will flow from one plate to the other. This leads to heating of the capacitor, and rapid failure.
     
  5. onlyvinod56

    Thread Starter Active Member

    Oct 14, 2008
    362
    1

    Thankyou Mr.SGT.
     
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