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1N5822 diodes

Discussion in 'General Electronics Discussion' started by john2k, Oct 29, 2019.

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  1. john2k

    john2k

    185
    3
    Jun 13, 2012
    When using a 1n5822 diode, does a small amount of current still get through the direction it's not supposed to? Enough to power something that works on very few milliamps ? Because when I plug in a multimeter in the direction, it still reads a voltage but if I plug in something like a bulb it won't light up.
     
  2. BobK

    BobK

    7,682
    1,688
    Jan 5, 2010
    Yes, up to 2 mA at 25C and 20 mA at 100C

    datasheet

    Bob
     
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  3. john2k

    john2k

    185
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    Jun 13, 2012
    Thank you
     
    davenn likes this.
  4. Harald Kapp

    Harald Kapp Moderator Moderator

    11,716
    2,720
    Nov 17, 2011
    This effect is called reverse leakage current. Every semiconductor shows this effect to varying extend.
    The 1N5822 datasheet from ST for example shows this parameter on page 2 in the table labeled "STATIC ELECTRICAL CHARACTERISTICS".
    It is also shown in the OnSemiconductor datasheet linked by @BobK where it is called "Maximum Instantaneous Reverse Current".
     
    john2k likes this.
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