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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So I’d drop them in and see how it works. Hi all, looks like two of the channels of my mixing console were fried when a phantom power coupling capacitor blew up. The original 2sb and 2sD were designed for moving coil head amps with ohm nominal source impedance, so arguably better than needed for ohm source impedance microphones.

2SC Datasheet, Equivalent, Cross Reference Search. Transistor Catalog

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. Is there any equivalent for this?

June 06, The -E parts are higher beta than the -D. Low noise devices are generally graded for beta, as in the more beta the better for low noise applications. Looking at the noise figure curves wrt source impedance and current density here javascript: I typically would have run the 2sb at a little higher current density. March 29, Bookkeeper Member Czech Republic Posts: They were using datsaheet loads of the 2sd NPN version.


April 01, I have not searched the other parts mentioned in this thread, but also with web search i didnt found a “recommended” replacement.

I’ve used the npn counterpart 2SC with good results.

The number sounds familiar Also on this forum are some threads about this part, but no conclusion what to use instead. Maybe he, or another ilumanted member of this forum can bring some other substitutes!

Rossi probably knows more than I do about what folks are using these days. I was already off the reservation when Peavey made their lifetime buy 2sc224 that.

You are about to become the voice of Interplanetary Parliament. August 16, You can buy small quantities on the web I still have some back in my lab.


The 85 looks identical except for higher breakdown voltage eatasheet 84 so no problem with either. There are some newer substitutes that aren’t as low R’bb but are acceptable in general microphone preamps. Roberts joins the thread!

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.


But I wouldn’t change it here for two reasons. Started by abby normal The Lab. Very nice that Mr.

I also want datasneet know if there is a good modern replacement for the 2sb out there. Those are super low Rbb transistors for low Z input stages. 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.

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.

Yup, they have datxsheet obsolete for years.

2SC2274 Datasheet

If you sub a newer part, you may want to back off on the current density for optimal noise performance or not. I don’t remember what transistor Peavey switched to. 2sc22744 stash of s are from my design work back in the ’70s, before I worked at Peavey. As we all know the 2SB has practically become extinct 2sc22274 I thought I’d follow Rossi’s recommendation and have them replaced by 2SA actually 2SA which I can get at my local dealer.

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