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Help finding alternative rectifier (SF3006PT)

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    Help finding alternative rectifier (SF3006PT)

    I'm working on my treadmill motor control board and found a short on the motor side. The rectifier SF3006PT is shorted across 2 legs. I don't believe I got it back on the heat sink properly when replacing the bridge rectifier that had gone out which lead to it getting hot and blowing about 30 mins into a jog. I've looked around and most of what I'm seeing is at least a month out from China. I'm wondering if anyone has an ideas on a suitable alternative that I could find within a week or so stateside. Below is the Mouser data sheet.

    https://cdn.badcaps-static.com/pdfs/...ec9d8cb238.pdf

    #2
    Re: Help finding alternative rectifier (SF3006PT)

    On Semi's MUR3040WTG looks very similar (60nS recovery time instead of 35nS), https://cdn.badcaps-static.com/pdfs/...7a104ec573.pdf
    PeteS in CA

    Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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      #3
      Re: Help finding alternative rectifier (SF3006PT)

      Originally posted by curt2199 View Post
      I’ve looked around and most of what I’m seeing is at least a month out from China.
      I would suggest you avoid buying semiconductors directly from sites that stock Chinese "non-verified" components - e.g. Amazon, eBay, AliExpress, and etc. The reason why is because there are way too many counterfeit parts. With semiconductors, it seems they always blow up or burn out at a fraction of the specs they are rated for, if dealing with counterfeit parts. Now, when it comes to eBay, there are genuine sellers and sell genuine parts (typically production over-stock), but you kind of have to know how to identify them. FWIW, Digikey and Mouser are usually the two safest approaches to buying genuine parts.

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        #4
        Re: Help finding alternative rectifier (SF3006PT)

        Thanks but Digikey and Mouser were out of stock. Ended up ordering on eBay from a German seller. 2 week wait timeā€¦ we'll see.


        Originally posted by momaka View Post
        I would suggest you avoid buying semiconductors directly from sites that stock Chinese "non-verified" components - e.g. Amazon, eBay, AliExpress, and etc. The reason why is because there are way too many counterfeit parts. With semiconductors, it seems they always blow up or burn out at a fraction of the specs they are rated for, if dealing with counterfeit parts. Now, when it comes to eBay, there are genuine sellers and sell genuine parts (typically production over-stock), but you kind of have to know how to identify them. FWIW, Digikey and Mouser are usually the two safest approaches to buying genuine parts.

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          #5
          Re: Help finding alternative rectifier (SF3006PT)

          You could have went with the SF3008PT which is just a 600v version of the 400v and is in stock at digikey.
          Digikey pt# SF3008PTC0G-ND 710 in stock
          Last edited by R_J; 02-05-2022, 05:54 PM.

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            #6
            Re: Help finding alternative rectifier (SF3006PT)

            ^Agreed.

            Anyways, I hope O/P keeps us posted how it goes. Hopefully he does get a genuine part at least.

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