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Re: MUR1660 Question.
Original poster: Zagarus Rashkae <arbitrarily_random-at-yahoo-dot-com>
--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: Robynsaddiction-at-aol-dot-com
>
> Hello,
>
> I am building a half bridge, and am ready to
> install that MUR1660
> diodes. However, I have a question about
> installation. The case is TO-220;
> pin 1 & 3 are anodes, while pin 2 is the cathode.
> Anyhow, I am just
> wondering how the middle pin can just be neglected.
> For instance, in my
> Plasma Sonic board the only legs of the case that
> are soldered to the board
> are the two anodes. The (K) cathode was clipped. Did
> I get the wrong diodes
> or what? -Richard
>
>
No, this is normal and the cathode is the tab of the
TO-220. It should be attached to the board with a
screw, since the pad on the board is the cathode
contact. Also, there should be a small heatsink on the device.