tom
Guest
Thu May 12, 2005 4:25 pm
I'm making an amateur radio project and I need help with identifying which
types of transistors I can substitute for one in a 100mhz oscillator
component. When I Google it, all I get are pages for selling catalogues of
spec-data, and endless 'give-us-money' type webpages. I know, this question
indicates a stunning lack of knowledge about even basic transistor
knowledge, but I just cannot find the answer anywhere, short of paying a few
hundred dollars for an entire catalogue or signing up for a 10 week course
on transistors!
The schematic says use a BC547, or 2N3904, or a 2N3563, and one schematic
even says use any transistor with a cut-off point less than 300mhz.
These are what I have on hand, which (if any, or all) can be used to
substitute the ones I mentioned?
mps6514
8182n4410
718mps6514
pn2222a
mpsao5
2n4123
2n4410
2n4400
mps6514
--
73
Tom
VA7FAB
Skype Name:
va7fab_tom_in_vancouver
John Musselman
Guest
Thu May 12, 2005 10:01 pm
Probably any of those.
Go to Mouser or Digikey for free datasheets.
Hey, you could always use a 3-pin socket and see which ones work best.
John Musselman
"tom" <cyberhun_at_shaw.ca> wrote in message
news:ZrLge.1326181$6l.807458_at_pd7tw2no...
Quote:
I'm making an amateur radio project and I need help with identifying which
types of transistors I can substitute for one in a 100mhz oscillator
component. When I Google it, all I get are pages for selling catalogues
of spec-data, and endless 'give-us-money' type webpages. I know, this
question indicates a stunning lack of knowledge about even basic
transistor knowledge, but I just cannot find the answer anywhere, short of
paying a few hundred dollars for an entire catalogue or signing up for a
10 week course on transistors!
The schematic says use a BC547, or 2N3904, or a 2N3563, and one schematic
even says use any transistor with a cut-off point less than 300mhz.
These are what I have on hand, which (if any, or all) can be used to
substitute the ones I mentioned?
mps6514
8182n4410
718mps6514
pn2222a
mpsao5
2n4123
2n4410
2n4400
mps6514
--
73
Tom
VA7FAB
Skype Name:
va7fab_tom_in_vancouver
tom
Guest
Thu May 12, 2005 10:41 pm
Great! I didn't think you could get that infor for free --- thanks.
--
73
Tom
VA7FAB
Skype Name:
va7fab_tom_in_vancouver
Gar
Guest
Tue May 31, 2005 12:14 pm
Go to
http://www.nteinc.com/
Download QuickCROSS Version 11.0. Put in the 2N3904 to look up the NTE
equivalent. You can then put any transistors in that you have on hand and
see if they match the NTE number you just got. NTE replacement parts are
readily available.
"tom" <cyberhun_at_shaw.ca> wrote in message
news:ZrLge.1326181$6l.807458_at_pd7tw2no...
Quote:
I'm making an amateur radio project and I need help with identifying which
types of transistors I can substitute for one in a 100mhz oscillator
component. When I Google it, all I get are pages for selling catalogues
of
spec-data, and endless 'give-us-money' type webpages. I know, this
question
indicates a stunning lack of knowledge about even basic transistor
knowledge, but I just cannot find the answer anywhere, short of paying a
few
hundred dollars for an entire catalogue or signing up for a 10 week course
on transistors!
The schematic says use a BC547, or 2N3904, or a 2N3563, and one schematic
even says use any transistor with a cut-off point less than 300mhz.
These are what I have on hand, which (if any, or all) can be used to
substitute the ones I mentioned?
mps6514
8182n4410
718mps6514
pn2222a
mpsao5
2n4123
2n4410
2n4400
mps6514
--
73
Tom
VA7FAB
Skype Name:
va7fab_tom_in_vancouver
