Comments on: Mosfet Body Diodes http://www.muzique.com/news/mosfet-body-diodes/ Stompboxes, Schematics, Guitars and Electronics Thu, 09 Feb 2012 00:01:56 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: $uperpuma http://www.muzique.com/news/mosfet-body-diodes/comment-page-1/#comment-295 $uperpuma Thu, 14 Feb 2008 19:34:38 +0000 http://www.muzique.com/news/?p=63#comment-295 I have what I believe to be a small lot of these 4 terminal MOSFETs... would be nice to have a circuit to use them in :) I have what I believe to be a small lot of these 4 terminal MOSFETs… would be nice to have a circuit to use them in :)

]]> By: DDD http://www.muzique.com/news/mosfet-body-diodes/comment-page-1/#comment-272 DDD Fri, 11 Jan 2008 14:34:03 +0000 http://www.muzique.com/news/?p=63#comment-272 Jack, according to you, one can use 4-terminal MOSFET as a solid state device with TWO control terminals (for example, double-gate MOSFET tetrode) or a combination of MOSFET and BJT in "one bottle". It seems to be much more interesting than using it as a single BJT. Jack, according to you, one can use 4-terminal MOSFET as a solid state device with TWO control terminals (for example, double-gate MOSFET tetrode) or a combination of MOSFET and BJT in “one bottle”.
It seems to be much more interesting than using it as a single BJT.

]]> By: admin http://www.muzique.com/news/mosfet-body-diodes/comment-page-1/#comment-267 admin Tue, 25 Dec 2007 15:01:40 +0000 http://www.muzique.com/news/?p=63#comment-267 Update: 4-terminal mosfets are still in production though much less common than the 3-terminal devices. Many of them are listed in the 3Nxxx part number range. Typically they are in TO-72 or TO-206AF packages with the body (substrate) pin connected internally to the metal case. Update: 4-terminal mosfets are still in production though much less common than the 3-terminal devices. Many of them are listed in the 3Nxxx part number range. Typically they are in TO-72 or TO-206AF packages with the body (substrate) pin connected internally to the metal case.

]]> By: epicac http://www.muzique.com/news/mosfet-body-diodes/comment-page-1/#comment-266 epicac Mon, 24 Dec 2007 18:08:09 +0000 http://www.muzique.com/news/?p=63#comment-266 Great thing you've added the planar picture. It definitely will make a <i>poor</i> bipolar transistor. I think (well, fantasize) the low conductivity of the base layer (P substrate on the image) will make the input impedance of the Body pin really high (as in bi-polars' common base wiring). Also, the same low conductivity of the channel will limit the source-drain current, and it will probably require a high voltage to open the transistor altogether. In other terms, I'm waiting for your results anxiously. Especially if you'll be testing the common emitter/common collector schemes (of the bi-polars). Great thing you’ve added the planar picture.

It definitely will make a poor bipolar transistor. I think (well, fantasize) the low conductivity of the base layer (P substrate on the image) will make the input impedance of the Body pin really high (as in bi-polars’ common base wiring). Also, the same low conductivity of the channel will limit the source-drain current, and it will probably require a high voltage to open the transistor altogether.

In other terms, I’m waiting for your results anxiously. Especially if you’ll be testing the common emitter/common collector schemes (of the bi-polars).

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