"Unapproved" input filtering

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  • stj
    Great Sage 齊天大聖
    • Dec 2009
    • 30941
    • Albion

    #61
    Re: "Unapproved" input filtering

    well rifa was taken over by Kemet - so any rifa branded stuff is old.

    that said, it looks like they are still making some like that!
    http://www.kemet.com/Film_Capacitors

    Comment

    • eccerr0r
      Solder Sloth
      • Nov 2012
      • 8672
      • USA

      #62
      Re: "Unapproved" input filtering

      So avoid these like the plague too?

      I would imagine people would be gunshy using these by now due to their bad history, yet that link I have at Digikey, that should be New-new stock and is commanding a huge price premium too... $4 for a 0.1uF 660V X2 is a little pricey! Tell me about cheaping out but I'm buying the 50 cent potted Panasonics.

      Comment

      • stj
        Great Sage 齊天大聖
        • Dec 2009
        • 30941
        • Albion

        #63
        Re: "Unapproved" input filtering

        looking at the kemet site, the X2 rated stuff is boxed and potted from the bottom.
        (top-left)
        the clear stuff may just be non-critical use now.

        Comment

        • eccerr0r
          Solder Sloth
          • Nov 2012
          • 8672
          • USA

          #64
          Re: "Unapproved" input filtering

          So, replacing a RIFA with a RIFA = critical or non-critical?

          Comment

          • eccerr0r
            Solder Sloth
            • Nov 2012
            • 8672
            • USA

            #65
            Re: "Unapproved" input filtering

            Took a sampling of a few X2's that I need to get for my scopes:

            http://www.digikey.com/product-searc...rt=732-5746-ND

            Which should I get, is cheaper really better?

            Comment

            • stj
              Great Sage 齊天大聖
              • Dec 2009
              • 30941
              • Albion

              #66
              Re: "Unapproved" input filtering

              well kemet do 2, one is the same price as the panasonic.
              it looks like the premium price is because it's paper and not plastic-film.
              i dont know why? - fuck it - get the plastic film from kemet or pana.

              Comment

              • eccerr0r
                Solder Sloth
                • Nov 2012
                • 8672
                • USA

                #67
                Re: "Unapproved" input filtering

                Yeah, that's why I don't get it... how could an inferior product command a higher price?

                Any ideas about Wurth?

                Comment

                • stj
                  Great Sage 齊天大聖
                  • Dec 2009
                  • 30941
                  • Albion

                  #68
                  Re: "Unapproved" input filtering

                  no idea, but i use their poly's sometimes.

                  Comment

                  • eccerr0r
                    Solder Sloth
                    • Nov 2012
                    • 8672
                    • USA

                    #69
                    Re: "Unapproved" input filtering

                    I just found two RIFA Y-caps in my junk box (I think... PME 271 Y, 4700pF) ... I should be very afraid... and they belong in the round file...

                    pre-explosion Y RIFAs for your daily frightfest:

                    Attached Files
                    Last edited by eccerr0r; 07-14-2016, 12:58 PM.

                    Comment

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