Help finding alternative rectifier (SF3006PT)

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  • curt2199
    Senior Member
    • Oct 2013
    • 54
    • United States
    #1

    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
    Tags: None
    • PeteS in CA
      Badcaps Legend
      • Aug 2005
      • 3581
      • USA, Unsure of Planet
      #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.
      ****************************
      To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
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        Comment

        • momaka
          master hoarder
          • May 2008
          • 12175
          • Bulgaria
          #3
          Re: Help finding alternative rectifier (SF3006PT)

          Originally posted by curt2199
          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.

            Comment

            • curt2199
              Senior Member
              • Oct 2013
              • 54
              • United States
              #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 time… we'll see.


              Originally posted by momaka
              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.

                Comment

                • R_J
                  Badcaps Legend
                  • Jun 2012
                  • 9588
                  • Canada
                  #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.

                    Comment

                    • momaka
                      master hoarder
                      • May 2008
                      • 12175
                      • Bulgaria
                      #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.

                        Comment

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