Repair of automotive battery charger

Discussion in 'General Electronics Chat' started by Gdrumm, Aug 15, 2009.

  1. Gdrumm

    Thread Starter Distinguished Member

    Aug 29, 2008
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    36
    I have a car battery charger with bad button diodes, I tried using a smaller diode (based on ohm reading), but broke off the soldered tabs in the process.

    I have scavaged some rectifier diodes 1N5408 (I have 4 of these), and RG4 (I have two of these). Can I use these in place of the button diodes?

    I couldn't find 1N5408 on the Datasheet, or Alldatasheet web sites.

    Thanks,
    Gary
     
  2. Gdrumm

    Thread Starter Distinguished Member

    Aug 29, 2008
    684
    36
    Okay, my mistake, I found the 1N5408 on Alldatasheet, and I think that they might be a good ones to try. Any advice on replacing button diodes with these stem types?

    Thanks
     
  3. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,574
    230
    What's the "charge current" rating on the charger? The 1N5408s are only rated at 3A.

    Ken
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    When you look for high current rated diodes, a bridge is often less expensive than a pair of diodes.
     
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