JFET = JFET = JFET . . .?

[Watson A.Name - \Watt Sun, the Dark Remover\]

I got some basic info from my Moto manual for the 2N3436. But a google
brought up almost nothing other than the Digchip website. I jumped thru
all the hoops to register, but was sadly disappointed. The dfatasheet
they offered was for a Solitron chip, not the finished device. And the
part no's they said it was used in were not 2N3436. Nor could I trace
any crossref to those no's. No 'provenance' so to speak. Leaves me
wondering if this database is even valid.

I know that JFETs are a lot alike, but usually I can find out if the FET
is optimized for RF, or low noise audio or LF, or switching, etc. But
apparently not in this case. About the only thing I found was that it
is in the TO-18 case.


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[Fred Bartoli]

I got some basic info from my Moto manual for the 2N3436. But a google
brought up almost nothing other than the Digchip website. I jumped thru
all the hoops to register, but was sadly disappointed. The dfatasheet
they offered was for a Solitron chip, not the finished device. And the
part no's they said it was used in were not 2N3436. Nor could I trace
any crossref to those no's. No 'provenance' so to speak. Leaves me
wondering if this database is even valid.

I know that JFETs are a lot alike, but usually I can find out if the FET
is optimized for RF, or low noise audio or LF, or switching, etc. But
apparently not in this case. About the only thing I found was that it
is in the TO-18 case.

Found this one:

http://www.americanmicrosemi.com/products/specs/2N3436.phtml

 

[tlbs]

I couldn't find anything in any of my databooks (some of them quite
old).

The 2N3436 does cross reference to an NTE 133, which is:

JFET N-Ch General Purpose AF Amp/Switch
BV[GSS] min = 25 V
V[GS] max cutoff = 6 V
I[DSS] (min - max) = 0.5 - 15 mA
C[ISS] max = 6 pF
C[RSS] max = 2 pF
g[FS] = 40000 umho
Power diss, max = 300 mW

Hope this helps.

 

[Watson A.Name - \Watt Sun, the Dark Remover\]

"Fred Bartoli"

"Watson A.Name - "Watt Sun, the Dark Remover"" <[email protected]> a
écrit dans le message de
Found this one:

http://www.americanmicrosemi.com/products/specs/2N3436.phtml

Thanks, that's more than I had before.

BTW< I bought some Ge diodes from them, and I don't think I want to buy
anything more from them. The diodes visually looked like they were
assembled by a drunk.

 

[Graham W]

I'll add the Siliconix 1979 info to the right:

I couldn't find anything in any of my databooks (some of them quite
old).

The 2N3436 does cross reference to an NTE 133, which is:

JFET N-Ch General Purpose AF Amp/Switch
BV[GSS] min = 25 V -50v
V[GS] max cutoff = 6 V -9.8v
I[DSS] (min - max) = 0.5 - 15 mA 3.0 - 15mA
C[ISS] max = 6 pF 18pF
C[RSS] max = 2 pF no info
g[FS] = 40000 umho 2500 - 10,000umho@1kHz
Power diss, max = 300 mW 300mW (@ or below 25ºC)

Noise Factor 2dB