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Dave
Guest
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 Posted:
Thu Feb 10, 2005 3:00 am Post subject:
Equivalent for 2N3904 |
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Could anybody with a copy of towers etc. give me an equivalent for a 2N3904
TIA
Dave
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Anthony Fremont
Guest
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| Posted:
Thu Feb 10, 2005 3:06 am Post subject:
Re: Equivalent for 2N3904 |
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"Dave" <blaildyors@quassouwko.mailexpire.com> wrote in message
news:7b467360.0502091300.3761ec14@posting.google.com...
| Quote: | Could anybody with a copy of towers etc. give me an equivalent for a
2N3904 |
BC547 or 2N2222 should work for general purpose work. |
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Dave Platt
Guest
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| Posted:
Thu Feb 10, 2005 3:30 am Post subject:
Re: Equivalent for 2N3904 |
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In article <7b467360.0502091300.3761ec14@posting.google.com>,
Dave <blaildyors@quassouwko.mailexpire.com> wrote:
| Quote: | Could anybody with a copy of towers etc. give me an equivalent for a 2N3904
|
That part can probably be accurately described as a "jellybean" - it's
an NPN switching transistor, Ft 300 MHz, good up to an absolute limit
of 40 volts and 200 mA.
They're quite common and easy to come by, I believe. If you can't
find one, then unless there's something exotic about your application
you can probably substitute a PN2222A. 2N4401 might also work (Ft is
a bit lower), and I have no doubt that there are a zillion other
substitutes which would work OK in many circuit applications.
--
Dave Platt <dplatt@radagast.org> AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!
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Dave
Guest
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| Posted:
Thu Feb 10, 2005 8:40 am Post subject:
Re: Equivalent for 2N3904 |
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Cheers guys,
Have some 2N2222's kicking around - somewhere! |
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Watson A.Name - \"Watt Su
Guest
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| Posted:
Fri Feb 11, 2005 12:57 pm Post subject:
Re: Equivalent for 2N3904 |
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"Anthony Fremont" <spam@anywhere.com> wrote in message
news:qXuOd.32770$sr1.22034@fe2.texas.rr.com...
| Quote: |
"Dave" <blaildyors@quassouwko.mailexpire.com> wrote in message
news:7b467360.0502091300.3761ec14@posting.google.com...
Could anybody with a copy of towers etc. give me an equivalent for a
2N3904
BC547 or 2N2222 should work for general purpose work.
|
The BC547 has a bit more gain, and the reverse pinout, but should work
okay. The 2N2222 is a metal case TO-18 with the different pinout, and
is a bit higher power. The 2N4124 it almost the same, except the max
collector voltage is only 25VDC.
But it seems to me that using the 2N3904 is the best idea, because
they're as common as dog doo-doo. |
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Barry & Nikki
Guest
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| Posted:
Tue Feb 15, 2005 6:11 am Post subject:
Re: Equivalent for 2N3904 |
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If you do an Ebay search there are currently quite a few 2N3904 transistors
available for an exact replacement.
"Dave" <blaildyors@quassouwko.mailexpire.com> wrote in message
news:7b467360.0502091300.3761ec14@posting.google.com...
| Quote: | Could anybody with a copy of towers etc. give me an equivalent for a
2N3904
TIA
Dave |
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