Where Are You Guys Buying Welder Diodes At???

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Hi,      My 1981 Miller Dialarc 250, blew a diode and I want to replace all 4.Miller wants almost $100 EACH!!!Found some on EBAY at a company in Miami that are $30 ea., but...Thought I would ask and see if anyone here carries them for these older machines???
Reply:I think you are safe with the ebay ones, but make sure you get the correct polarity. You will find both negative and positive diodes referring to the orientation of the stud to the current flow. You can also find them on Amazon if you want a little more buying protection  https://www.amazon.com/s?k=150+amp+s...ref=nb_sb_nossI think most people are putting in 150 amp diodes in the Dialarcs.Miller Multimatic 255
Reply:

Originally Posted by Louie1961

I think you are safe with the ebay ones, but make sure you get the correct polarity. You will find both negative and positive diodes referring to the orientation of the stud to the current flow. You can also find them on Amazon if you want a little more buying protection  https://www.amazon.com/s?k=150+amp+s...ref=nb_sb_nossI think most people are putting in 150 amp diodes in the Dialarcs.
Reply:Hi,       Here is the one on EBAY, they have the pos. and neg. of course and say they are for Miller's with the same number as the OEM's.https://www.ebay.com/itm/Part-037-30...YAAOSwEJdfoC0-
Reply:If you know electronics or can get help from somebody who does,  the electronics suppliers are much cheaper :Like Digi-Key or Mouser or Newark :https://www.digikey.com/catalog/en/p...rd-diode/32066https://www.mouser.com/Semiconductor...z0y05uZ1yox7u1Century buzzbox that I learned on 40+ years ago (was Dad's)Crappy Century 110volt mig 70 amp pigeon pooper.Lincoln Idealarc TIG-300
Reply:Hi,      I E-Mailed the EBAY seller about the length of the Diodes and he got right back to me, and...They will fit, he said he had the same Diode with a longer lead if needed.That says a lot to me, seems like a well run business.
Reply:

Originally Posted by bead-boy

If you know electronics or can get help from somebody who does,  the electronics suppliers are much cheaper :Like Digi-Key or Mouser or Newark :https://www.digikey.com/catalog/en/p...rd-diode/32066https://www.mouser.com/Semiconductor...z0y05uZ1yox7u1
Reply:i needed one,  it was a factory lincoln, at exactly half price on ebay.      i still havent fixed it though, just sittin there gettin rained on
Reply:Hi,      Well, my Diodes came in, comes with shrink tubing...I'll put them in tomorrow, hope that cures my Welder!

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