Elektronische Bauelemente 2SC A, 60 V NPN Plastic Encapsulated Transistor RoHS Compliant Product A suffix of “-C” specifies halogen & lead-free . The 2SC is manufactured in a plastic TO case. When looking at the flat side with the leads pointed downward, the three leads emerging from the. 2SC datasheet, 2SC pdf, 2SC data sheet, datasheet, data sheet, pdf, Unknow, LOW FREQUENCY POWER AMP APPLICATIONS.

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Maybe he, or another ilumanted member of this forum can bring some other substitutes!

(PDF) 2SC2274 Datasheet download

Looking forward to some results! I was already off the reservation when Peavey made their lifetime buy on that. But I wouldn’t change it here for two reasons. Regular transistors will be noisy in this application; I don’t know the NTE part, but I doubt it is a super low Rbb part. The 2SA from Toshiba is an excellent super low Rbb transistor, but it has become scarce. Rossi Member Germany Posts: Transistor substitution in GAR The 2SA Hitachi that I pointed out earlier is a popular replacement used in quite a few preamp stages that previously had the 2SB First increasing current there, will decrease input signal swing before saturation, unless you change other values, but more importantly, I suspect the newer replacement devices are higher Rbb and happier at lower current density.

But that will not last for ever. Hi Have these transistors in bad Delta channel.

No simple fix dztasheet avoid the scratchy noise with gain changes due to small DC offsets, but you might want to experiment with cap quality there. A am wondering what Midas is using or their XL42 preamp now.


Transistor substitution question Started by jrmintz The Lab. Started by abby normal The Lab.

Those are super low Rbb transistors for low Z input stages. Other observations about the schematic, the diode across the uF looks a little odd.

Rossi probably knows more than I do 2sc2724 what folks are using these days. February 18, April 01, Also on this forum are some threads about this part, but no conclusion what to use satasheet. I typically datsaheet have run the 2sb at a little higher current density. That design looks like around 1 mA nominal set by ohm and Vbe of 2sc Started by jrmintz The Lab. Is there any equivalent for this?

I usually added clamp diodes backwards across the be junction of the low noise devices to make sure they never zener if reversed, as that can make them noisy. It will work but you’ll have more noise.

If you sprinkle when you tinkle, please be neat and wipe the seat.

2SC2274 डेटा पत्रक PDF( Datasheet डाउनलोड )

The 85 looks identical except for higher breakdown voltage 2sc22774 84 so no problem with either. Bookkeeper Member Czech Republic Posts: I looked around briefly this afternoon and didn’t see anything obvious February 26, Thank you very much Just to get the channel working you could probably parallel up a few 2n per, but longer term you want to use a proper low noise part.

You tell me whar a man gits his corn pone, en I’ll tell you what his ‘pinions is. August 16, I don’t remember what transistor Peavey switched to. The -E parts are higher beta than the -D. But look at the data sheets for NF vs impedance curves, for something that doesn’t suck into ohms. Started by maxime The Lab. In datazheet schematic there are 2 2sb Roberts joins the thread! I also want to know if there is a good modern replacement for the 2sb out there.


One weak link sonically for that design is the uF cap in the gain leg June 06, They were using truck loads of the 2sd NPN version.

2SC – 2SC part cross-reference datasheet –

datasheeet You are about to become the voice of Interplanetary Parliament. Low noise devices are generally graded for beta, as in the more beta the better for low noise applications. Hi all, looks like two of the channels of my mixing console were fried when a phantom power coupling capacitor blew up. The original Rohm transistors are discontinued; if you can’t source any, try the 2SA or, not quite as low noise but still pretty good, 2N Looking at the noise figure curves wrt source impedance and current density here javascript: Perhaps they are protecting against some latch up datasheett.

Is there anything to consider changing resistor values etc. Change both transistors in the input stage. I’ve used the npn counterpart 2SC with good results. You probably have two of those per mic input.