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    Capacitor replacement problem

    Hi all,

    I am fixing a power supply for a fruit machine, After removing the PSU and unscrewing the holding screws to reveal a capacitor rolling around freely with some burn damage under where it had been originally it occurred that I could indeed need a new one, specifically a 400wv 330uf 105°c Samwha snap in capacitor.
    After ordering a like for like replacement (not samwha) it arrived today, I was ready to whip the iron out and get to work then noticed, it has an extra terminal on the negative side, and obviously won't fit in a pcb with two holes.

    If I were to get the snips out and cut off this extra terminal it would fit perfectly and would look exactly the same as the other side. But this is electricity after all so I approach with caution. It also crossed my mind I could drill a small whole in the PCB to accommodate this extra terminal but it wouldn't have much to hold to if soldered I don't think.

    After many searches on google etc. I can find nothing regarding this extra terminal (as soon as you write in capacitor negative terminal you're inundated with polarity videos, links ect)Exact capacitor can be found on Amazon by searching 'BHC 330uf capacitor' and part number ALC40F1009DF.

    I have brought up the data sheet which also has no mention of said extra terminal, nor on the actual item listing (you can see it in the picture, slightly...if you know what your looking for)

    So my question after that long life-story is has anyone else come across these caps, and would it make a world of difference snipping off the extra leg as it is a second negative? Any information regarding this type of 1 pos 2 beg terminal would be handy.....

    Many Thanks and apologies about the long question..

    #2
    Re: Capacitor replacement problem

    i have done this before, the extra leg is just for extra strength holding it to the board.

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      #3
      Re: Capacitor replacement problem

      Ahh ok thanks for the reply

      Comment


        #4
        Re: Capacitor replacement problem

        Yes what stj said.
        Sometimes it's also a leg completely by itself, usually on larger caps.
        But same reason: for mechanical support of the capacitor.
        "The one who says it cannot be done should never interrupt the one who is doing it."

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          #5
          Re: Capacitor replacement problem

          Thanks for the reply Per

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