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Need a few obsolete part numbers

I

Ignoramus19284

Jan 1, 1970
0
Anyone would care to post smoe part numbers for obsolete (not selling
currently) electronic parts, thanks

i
 
R

Rich Grise

Jan 1, 1970
0
Anyone would care to post smoe part numbers for obsolete (not selling
currently) electronic parts, thanks

0A3
80
CK722

Hope This Helps!
Rich
 
W

Winfield Hill

Jan 1, 1970
0
Spehro said:
1N829A
1N60
CK722
OC70

Come now, those are unreasonable old parts.
How about uA703 and later, the uA709 opamps.
 
P

Phil Hobbs

Jan 1, 1970
0
Winfield said:
Come now, those are unreasonable old parts.
How about uA703 and later, the uA709 opamps.
TL011 current mirror, *sniff*
MRF966 dual gate GaAs FET
2SB737/2SD786 low noise bipolars
AD639 sine converter
MC13156 FM IF strip.

RIP.

Cheers,

Phil Hobbs
 
M

Michael A. Terrell

Jan 1, 1970
0
Ignoramus19284 said:
Sorry for the typo, I meant some

i

NEC MC-5800

RSPR MV7780

I have never found datasheets for either of these.

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida
 
I

Ignoramus19284

Jan 1, 1970
0
Thanks gents. I used these terms to see if any more spammers come up
in the first pages, which they did not. (some of these parts have a
large following and a lot of history, wikipedia articles etc, there
are of the kinds where spammers would not come up in first pages
anyway. But some parts were rather rare).

i
 
C

Clifford Heath

Jan 1, 1970
0
Phil said:
MRF966 dual gate GaAs FET

Would that be the UHF FET a friend of mine is lamenting?
He builds RF sniffers used in transmitter hunting for which
he's bemoaning the absence of a credible replacement GaAs FET,
and can't achieve the same noise and dynamic range performance
with any of the UHF chips.
 
P

Phil Hobbs

Jan 1, 1970
0
Clifford said:
Would that be the UHF FET a friend of mine is lamenting?
He builds RF sniffers used in transmitter hunting for which
he's bemoaning the absence of a credible replacement GaAs FET,
and can't achieve the same noise and dynamic range performance
with any of the UHF chips.

Probably. Its reverse capacitance was so low you counld make a 70-dB
isolation amp at 100 MHz in one stage, with one FET and two
resistors--you just connected G2 to source, and away you went.

Cheers,

Phil 'born too late' Hobbs
 
J

John Larkin

Jan 1, 1970
0
Would that be the UHF FET a friend of mine is lamenting?
He builds RF sniffers used in transmitter hunting for which
he's bemoaning the absence of a credible replacement GaAs FET,
and can't achieve the same noise and dynamic range performance
with any of the UHF chips.

NEC makes two dual-gate gaasfets, NE25139 and NE25339.

John
 
C

Clifford Heath

Jan 1, 1970
0
John said:
NEC makes two dual-gate gaasfets, NE25139 and NE25339.

That's what I *love* about Usenet. I figured if anyone had an answer
for Bryan, it would be Phil or you, and *both* of you answered! I'll
forward your response to him and I hope it will solve his problem.
If it does, you'll have his eternal gratitude!

Clifford Heath.
 
W

Winfield

Jan 1, 1970
0
John said:
NEC makes two dual-gate gaasfets, NE25139 and NE25339.

The mrf966 depletion-mode dual-gate GaAs FET claims Crss
of 40fF, typ, damn good, whereas the NE25139 and NE25339
are even better, 20fF. But I see NEC's specs are all with
Vg2s at +1V, a bit of a pain with the bypass requirement,
etc., compared to 0V ground used for the mrf966 specs.
John, have you tried using the NEC FETs with grounded G2?
 
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