EMRFD Message Archive 4216
Message Date From Subject 4216 2010-02-07 17:34:09 k5nwa Bipolar array input
arrays so I come up with the following list of devices to keep an
eye open for;
CA3018 Darlington pair + 2 transistors
CA3045 A ceramic version of the CA3046, military grades
CA3046 General purpose 1 differential pair and three individual
transistors, Ic=50ma
CA3054 Dual Differential pairs
CA3083 Higher current (100ma), higher power (500mw), 5 individual transistors
CA3086 Higher Power (300mw) version of CA3046
CA3127 Usable to 500MHz 5 individual transistors, low current (20ma/85mw)
CA3146 Higher voltage(40V) version of CA3046, 50V on A parts
CA3183 Higher Voltage version of CA3083 40V, 50V on A parts
CA3227 Usable to 1.5GHz, 5 matched transistors, low voltage and power
CA3246 1.5GHz version of CA3046, low voltage and power
If there are other important devices I would appreciate some feedback.
The CA3046, and CA3086 are easy to get and inexpensive some of the
others appear to be made of unobtanium in DIP packages.
Thanks
Cecil
k5nwa
< www.softrockradio.org > < www.qrpradio.com >
< http://parts.softrockradio.org/ >
Never take life seriously. Nobody gets out alive anyway.4217 2010-02-07 18:18:04 Chris Trask Re: Bipolar array input
>I'm going to try to get a hold of some of the matched transistor
>arrays so I come up with the following list of devices to keep an
>eye open for;
>
>CA3018 Darlington pair + 2 transistors
>CA3045 A ceramic version of the CA3046, military grades
>CA3046 General purpose 1 differential pair and three individual
>transistors, Ic=50ma
>CA3054 Dual Differential pairs
>CA3083 Higher current (100ma), higher power (500mw), 5 individual transistors
>CA3086 Higher Power (300mw) version of CA3046
>CA3127 Usable to 500MHz 5 individual transistors, low current (20ma/85mw)
>CA3146 Higher voltage(40V) version of CA3046, 50V on A parts
>CA3183 Higher Voltage version of CA3083 40V, 50V on A parts
>CA3227 Usable to 1.5GHz, 5 matched transistors, low voltage and power
>CA3246 1.5GHz version of CA3046, low voltage and power
>
>If there are other important devices I would appreciate some feedback.
>
>The CA3046, and CA3086 are easy to get and inexpensive some of the
>others appear to be made of unobtanium in DIP packages.
>
Chris Trask
N7ZWY / WDX3HLB
Senior Member IEEE
http://www.home.earthlink.net/~christrask/4218 2010-02-07 19:06:26 k5nwa Re: Bipolar array input
>I found two sources of the CA3083 for $.68 and cheaper;
>
> >
> >I'm going to try to get a hold of some of the matched transistor
> >arrays so I come up with the following list of devices to keep an
> >eye open for;
> >
> >CA3018 Darlington pair + 2 transistors
> >CA3045 A ceramic version of the CA3046, military grades
> >CA3046 General purpose 1 differential pair and three individual
> >transistors, Ic=50ma
> >CA3054 Dual Differential pairs
> >CA3083 Higher current (100ma), higher power (500mw), 5 individual
> transistors
> >CA3086 Higher Power (300mw) version of CA3046
> >CA3127 Usable to 500MHz 5 individual transistors, low current (20ma/85mw)
> >CA3146 Higher voltage(40V) version of CA3046, 50V on A parts
> >CA3183 Higher Voltage version of CA3083 40V, 50V on A parts
> >CA3227 Usable to 1.5GHz, 5 matched transistors, low voltage and power
> >CA3246 1.5GHz version of CA3046, low voltage and power
> >
> >If there are other important devices I would appreciate some feedback.
> >
> >The CA3046, and CA3086 are easy to get and inexpensive some of the
> >others appear to be made of unobtanium in DIP packages.
> >
>
>Now we're gonna have some fun!
>
>Chris Trask
>N7ZWY / WDX3HLB
>Senior Member IEEE
< http://www.onlinecomponents.com/buy/RCA/CA3083/ >
< http://www.goldmine-elec-products.com/prodinfo.asp?number=G15111 >
100ma/500mw per transistor, good for a transmitter, audio
amplifier,....whatever you can imagine. The CA3183 is even better due
to it's higher voltage rating but I haven't found any for a reasonable price.
Anyone knows the Ft ratings of the CA3081, an CA3082, I think it's
low because they don't state it, but it has 7 transistors with decent
current/power ratings.
Cecil
k5nwa
< www.softrockradio.org > < www.qrpradio.com >
< http://parts.softrockradio.org/ >
Never take life seriously. Nobody gets out alive anyway.4219 2010-02-07 20:31:35 Chris Trask Re: Bipolar array input
> >
> >
> > >
> > >I'm going to try to get a hold of some of the matched transistor
> > >arrays so I come up with the following list of devices to keep an
> > >eye open for;
> > >
> > >CA3018 Darlington pair + 2 transistors
> > >CA3045 A ceramic version of the CA3046, military grades
> > >CA3046 General purpose 1 differential pair and three individual
> > >transistors, Ic=50ma
> > >CA3054 Dual Differential pairs
> > >CA3083 Higher current (100ma), higher power (500mw), 5 individual
> > transistors
> > >CA3086 Higher Power (300mw) version of CA3046
> > >CA3127 Usable to 500MHz 5 individual transistors, low current
> > >CA3146 Higher voltage(40V) version of CA3046, 50V on A partsprice.
> > >CA3183 Higher Voltage version of CA3083 40V, 50V on A parts
> > >CA3227 Usable to 1.5GHz, 5 matched transistors, low voltage and power
> > >CA3246 1.5GHz version of CA3046, low voltage and power
> > >
> > >If there are other important devices I would appreciate some feedback.
> > >
> > >The CA3046, and CA3086 are easy to get and inexpensive some of the
> > >others appear to be made of unobtanium in DIP packages.
> > >
> >
> >Now we're gonna have some fun!
> >
> >Chris Trask
> >N7ZWY / WDX3HLB
> >Senior Member IEEE
>
> I found two sources of the CA3083 for $.68 and cheaper;
> < http://www.onlinecomponents.com/buy/RCA/CA3083/ >
> < http://www.goldmine-elec-products.com/prodinfo.asp?number=G15111 >
>
> 100ma/500mw per transistor, good for a transmitter, audio
> amplifier,....whatever you can imagine. The CA3183 is even better due
> to it's higher voltage rating but I haven't found any for a reasonable
>You probably should add the CA3096 to your list. Three isolated NPN
> Anyone knows the Ft ratings of the CA3081, an CA3082, I think it's
> low because they don't state it, but it has 7 transistors with decent
> current/power ratings.
>
devices (two matched) similar to the CA3046 and two matched isolated gutless
PNP devices. Don't let that "gutless" comment discourage you, as it's an
excellent device for making baseband rail-to-rail voltage amplifiers and
phase detectors, and it's the device that Wavetek used to temperature
stablize the log sweep converter in their early function generators.
And the CA3028 and CA3053, which are wonderful differential amplifiers.
Just the thing for variable gain IF amplifiers.
My databooks do not list the fT for the CA3081 or CA3082. They were
power device arrays intended for driving seven-segment displays.
Chris Trask
N7ZWY / WDX3HLB
Senior Member IEEE
http://www.home.earthlink.net/~christrask/4220 2010-02-08 03:52:22 Harold Smith Re: Bipolar array input
the SPICE models for the transistors in the 3046, 3083, 3086 and 3127 arrays
on their website.
http://www.intersil.com/design/designmodels.asp
de KE6TI, Harold