What do you think about low noise transistor arrays made by THAT Corporation.
THAT300 4xNPN
THAT320 4xPNP
THAT340 2xNPN
http://www.profusionplc.com
choose Products and THAT Corporation
THAT300 4xNPN
THAT320 4xPNP
THAT340 2xNPN
http://www.profusionplc.com
choose Products and THAT Corporation
mandat! thanks you very much!
I can't say anything about lownoise and fT .325Mhz is a ultra high frequency. fT of 2sc2240,2sc2362 and 2sc1815 is about 100Mhz
That 340 is very suite for building a symmetrical amp.But Beta is a problem, about 60-100 is very low . I have building amp with some discrete transistors .The low beta cause my failure. After my amp works for 3 days, these transistor no longer match each another -> increase the value of degenerationresistors .But I don't do like that. I remove fake 2sc2362Y/2sa1016Y and replace by good 2sc1815GR /2sa1015GR . I have not ever used array transistors so I dont' know what problem you will meet .
I can't say anything about lownoise and fT .325Mhz is a ultra high frequency. fT of 2sc2240,2sc2362 and 2sc1815 is about 100Mhz
That 340 is very suite for building a symmetrical amp.But Beta is a problem, about 60-100 is very low . I have building amp with some discrete transistors .The low beta cause my failure. After my amp works for 3 days, these transistor no longer match each another -> increase the value of degenerationresistors .But I don't do like that. I remove fake 2sc2362Y/2sa1016Y and replace by good 2sc1815GR /2sa1015GR . I have not ever used array transistors so I dont' know what problem you will meet .
Lownoise dual N-FET?
I think this is a way to go low noise. The 'vikingcoupled MC/MM RIAA PREAMP' created by Jens Sommer www.remmos.dk.
But there is a lownoise dual n-fet which I can't find.
Anyone knows?
I think this is a way to go low noise. The 'vikingcoupled MC/MM RIAA PREAMP' created by Jens Sommer www.remmos.dk.
But there is a lownoise dual n-fet which I can't find.
Anyone knows?
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