40673 mosfet

[rob34]

Can anyone tell me of a good substitute for this mosfet other than NTE
222? Thanks, Rob

 

[Graham W]

"rob34" <rob34@infinet.com> wrote in message
news:vra7d27om1anaf@corp.supernews.com...

Can anyone tell me of a good substitute for this mosfet other than NTE
222? Thanks, Rob

40822 ?


--
Graham W http://www.gcw.org.uk/ XP1800+ Page added, Graphics Tutorial
WIMBORNE http://www.wessex-astro-society.freeserve.co.uk/ Wessex
Dorset UK Astro Society's Web pages, Info, Meeting Dates, Sites & Maps
Change 'news' to 'sewn' in my Reply address to avoid my spam filter.

 

[Watson A.Name - "Watt Sun]

In article <vra7d27om1anaf@corp.supernews.com>, rob34@infinet.com
mentioned...

Can anyone tell me of a good substitute for this mosfet other than NTE
222? Thanks, Rob

Depends on what you're using it for. I built a 2M RF preamp and I
believe I subbed a 3N211 or something like that. Memory's kinda
fuzzy, a lotta water's gone under the bridge since I played with
those.


--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@

 

[Michael Black]

Watson A.Name - "Watt Sun, Dark Remover" (alondra101@hotmail.com) writes:

In article <vra7d27om1anaf@corp.supernews.com>, rob34@infinet.com
mentioned...
Can anyone tell me of a good substitute for this mosfet other than NTE
222? Thanks, Rob

Depends on what you're using it for. I built a 2M RF preamp and I
believe I subbed a 3N211 or something like that. Memory's kinda
fuzzy, a lotta water's gone under the bridge since I played with
those.

You would basically see those at the same time as the 40673.

I think realistically, that if someone needs a substitute for
an RF MOSFET, they look at what is available, rather than "what
replaces this...?". I gather that not many such devices are being
made anymore; certainly the common MOSFETs of thirty years ago have
faded out.

So one would look in places that sell RF MOSFETs (and I assume in
this case places that sell in small quantities), and then start
looking at the specs of what's available, comparing them with the
original device.

I thought a place like RF Parts, http://www.rfparts.com
carried some small signal MOSFETs, but a quick check shows nothing.

Dan's Small Parts lists small signal RF MOSFETs, and not only is
it easy to order small orders from him, but he carries the sorts
of things that someone needing RF MOSFETs might also be interested
in. http://www.danssmallpartsandkits.net

There must be some similar places to check, but I can't think of
any at the moment.

Michael

 

[rob34]

Michael Black wrote:

Watson A.Name - "Watt Sun, Dark Remover" (alondra101@hotmail.com) writes:

In article <vra7d27om1anaf@corp.supernews.com>, rob34@infinet.com
mentioned...

Can anyone tell me of a good substitute for this mosfet other than NTE
222? Thanks, Rob

Depends on what you're using it for. I built a 2M RF preamp and I
believe I subbed a 3N211 or something like that. Memory's kinda
fuzzy, a lotta water's gone under the bridge since I played with
those.


You would basically see those at the same time as the 40673.

I think realistically, that if someone needs a substitute for
an RF MOSFET, they look at what is available, rather than "what
replaces this...?". I gather that not many such devices are being
made anymore; certainly the common MOSFETs of thirty years ago have
faded out.

So one would look in places that sell RF MOSFETs (and I assume in
this case places that sell in small quantities), and then start
looking at the specs of what's available, comparing them with the
original device.

I thought a place like RF Parts, http://www.rfparts.com
carried some small signal MOSFETs, but a quick check shows nothing.

Dan's Small Parts lists small signal RF MOSFETs, and not only is
it easy to order small orders from him, but he carries the sorts
of things that someone needing RF MOSFETs might also be interested
in. http://www.danssmallpartsandkits.net

There must be some similar places to check, but I can't think of
any at the moment.

Michael

Thanks for all the input! I do have some mosfets one set is ERS 221 and

the other set is motorola MFE521 552,I think they will replace it, but I
don`t think they have as high of voltage rating. Rob