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Power & Energy
Forum Replacing battery charger diodes
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Forum Thread Details
  • State Not Answered
  • Replies 6 replies
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Related

Replacing battery charger diodes

Former Member
Former Member over 10 years ago

I have 6 and 10 amp, 12 volt manual automotive type battery chargers with bad diodes. These diodes are mounted on an aluminum plate.

I am looking at replacing these diodes with stud mount diodes, style DO4/DO5 etc. I have used MUR2515 in the past, but 1 of these has blown when hooked up to a very dead battery.

I was looking at purchasing MUR2510, 25F40 or FR30G02 as replacements.

Would these be suitable replacements and should I stick with fast recovery diodes?

Any suggested diode #s are appreciated.

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  • D_Hersey
    D_Hersey over 10 years ago +1
    You don't need a fast diode for this. I'd get power diodes rated at least about twice the nominal current capacity of your chargers. I'd be looking at ones that had a BV of at least 50 volts. Shottktys…
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  • kidiccurus
    0 kidiccurus over 10 years ago

    Just find diodes with the same part numbers as the original and replace like for like.

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  • Former Member
    0 Former Member over 10 years ago in reply to kidiccurus

    That would just be too easy.

    There are no #'s on them.

    I also want to get rid of the "button" style of diodes and replace then with ones that are easier to change in case of failures.

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  • Former Member
    0 Former Member over 10 years ago in reply to kidiccurus

    That would just be too easy.

    There are no #'s on them.

    I also want to get rid of the "button" style of diodes and replace then with ones that are easier to change in case of failures.

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  • supper_slash
    0 supper_slash over 10 years ago in reply to Former Member

    Send a pic of the diodes please

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  • Former Member
    0 Former Member over 10 years ago in reply to supper_slash

    I will try to upload a pic of the old rectifier plate with button diodes.

    In the back is the charger with stud style diodes installed on another plate.

    image

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