VN10KM mosfet

GregH2 · 05:08 AM

Hi All,

Just wondering if the VN10KM fet would be usable for a single ended common source class a input stage similar to a BOZ preamp stage? I was thinking of biasing it at 10mA or so, which for my application will dissipate about 0.25W.

You can see a datasheet here:

http://myweb.msoe.edu/~muthuswamy/ee...ab1/vn10km.pdf

It has a gate-source zener built in and drain-source reverse diode protection and I'm not sure how this would affect things?

The gate protection would be useful in this application. I assume the drain-source diode would be a non issue as the fet shouldn't see any reverse polarity in this application. Any thoughts? I haven't seen it used in audio anywhere. Any reason why not?

Thanks,

Greg.

Nelson Pass · 11th February 2011, 02:56 PM

I think it would work fine, just observe the voltage and
current limits.

GregH2 · 11th February 2011, 10:21 PM

Great, thanks Nelson.

Greg.

wakibaki · 11th February 2011, 11:03 PM

I seem to recall this device being used in 1~2 watt QRP transmitters for 80m, so I think it's quite hot, you might want to be careful about HF oscillation.

w

marconi · 20th September 2011, 04:44 PM

As to the drain source diode; this is an inherent part of the mosfet, due to the production technique. Every mosfet has it...

Rgds
Marcel

11th February 2011, 05:04 AM	#1
GregH2 diyAudio Member Join Date: Oct 2009	VN10KM mosfet Hi All, Just wondering if the VN10KM fet would be usable for a single ended common source class a input stage similar to a BOZ preamp stage? I was thinking of biasing it at 10mA or so, which for my application will dissipate about 0.25W. You can see a datasheet here: http://myweb.msoe.edu/~muthuswamy/ee...ab1/vn10km.pdf It has a gate-source zener built in and drain-source reverse diode protection and I'm not sure how this would affect things? The gate protection would be useful in this application. I assume the drain-source diode would be a non issue as the fet shouldn't see any reverse polarity in this application. Any thoughts? I haven't seen it used in audio anywhere. Any reason why not? Thanks, Greg. Last edited by GregH2; 11th February 2011 at 05:08 AM.

20th September 2011, 04:44 PM	#5
marconi diyAudio Member Join Date: Apr 2004 Location: at home	VN10KM As to the drain source diode; this is an inherent part of the mosfet, due to the production technique. Every mosfet has it... Rgds Marcel

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11th February 2011, 02:56 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	I think it would work fine, just observe the voltage and current limits.

11th February 2011, 10:21 PM	#3
GregH2 diyAudio Member Join Date: Oct 2009	Great, thanks Nelson. Greg.

11th February 2011, 11:03 PM	#4
wakibaki Banned Join Date: Jan 2008 Blog Entries: 2	I seem to recall this device being used in 1~2 watt QRP transmitters for 80m, so I think it's quite hot, you might want to be careful about HF oscillation. w

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