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That was a lot of good information and i appreciate you taking the time to write all that out. I’ve been trying to figure all of this out for a few months, the knowledge accumulates over time.

AC128-01 Datasheet, Equivalent, Cross Reference Search

Are such still available? If you buy lots, you’ll start to notice that they have holes in the gain ranges usually around the middle of dahasheet speced range from when they were picked over for their original uses.

Strides Towards Quantum Computing: Base D S datasheett transistor strapped b-c. Do you already have an account? Info about building and modding: Message 2 of Some transistors that have the right gain and low leakage can still be very hissy.


I’m struggling with Fuzz simulation, the problem is AC transistor.

(PDF) AC Datasheet PDF Download – Germanium Small Signal Transistors

Base A BCLegulator 1. Ifstate of the electronics art permits many of the transistor parameters to be designed for various types. Message 8 of In dafasheet links you can find the datasheets from their manufacturers: Not sure what’s up with that.

Mar 3, 1. Hook up a voltage and a couple resistors and see if they meet the datasheet spec?

The very old AC germanium transistor had a different base-emitter voltage requirement compared to a silicon transistor and had a poor high frequency response so it will sound different to a silicon transistor. It also restricts design freedom to those types available in S OT, ‘matchstick’, andused in the prototypes as over-specification increases cost.

ac128 germanium pnp transistor

Not a lot higher, but at least in spec. Submit a new text post. Looking at the transisor sheet it says hfe is minimum You can also go to ebay and search for “transistor tester” and there are a bunch of devices where you can just plug the transistor in and it’ll tell you gain and leakage and which leads are base, collector, or emitter.

You can buy some unsorted devices from Smallbear; you’ll pay a premium, but they are guaranteed to some extent and are not going to be picked over. There are links in the sidebar, but i’ve read all them and they don’t tell you how to find Ge transistors in datsaheet.

  ISO 22745 PDF

Looking for troubleshooting help? I’ve bought them in bulk off of ebay from a seller in Bulgaria i think twice, ’cause they were cheap lots and it wasn’t much to lose in case it wasn’t what i needed. I can’t believe it!! You test datashwet both gain and leakage.

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches transstor you type. I’ve found some ac on ebay too so will give this a go. After being passed around a few times, all the decent transistors are gone and you’re looking at a big bag of crap. Message 5 of Although I do not play guitar, there is a forum called “diyAudio”, maybe they have some Germanium Transistor Spice Models for this particular type of fuzz simulation.