Re: MUR1660 Question.

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Mitchell" <Electrontube-at-sbcglobal-dot-net> 

He isn't building a plasma sonic from what I read.  I believe he is building
a bridge to be used with the board I sold him.  In that case,  you should
use the pins of the diode, don't bother to use the case as the contact,
it'ts just more work.  You can also get TO-220-2 packaged diodes which are a
single diode in one package,  rather then two diodes.

Regards - Jim Mitchell
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, May 04, 2004 8:30 PM
Subject: 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.
 >
 >
 >