1. Divyadesingh

    Thread Starter New Member

    Oct 20, 2011
    1
    0
    may use i 1n4007 diode instead of 1n4148 diode?
     
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    Maybe. Depends on what is the diode used for. Post your schematic.
     
  3. Adjuster

    Well-Known Member

    Dec 26, 2010
    2,147
    300
    The 1N4007 rectifier diode has fairly high voltage and current ratings (1000V PIV and 1A If), but it is not good at high frequencies as its reverse recovery time is pretty long. It's useful for things like rectifiers in small mains driven power supplies, or suppressing the back-emf on a relay.

    The 1N4148 has lower ratings but much faster switching, it is too small for use in any but the tiniest power application, but more suitable as a general purpose signal or logic switching diode.

    http://www.fairchildsemi.com/ds/1N/1N4007.pdf

    http://www.nxp.com/documents/data_sheet/1N4148_1N4448.pdf
     
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