The 2N404s I sourced were especially consistent. Note: Not all headings are the same parameter. The column marked Case is the outline of the transistor case. Tl dr version: it's a pain, so buy a set if you're not prepared to invest more time and money than you think you'll need to invest.Īs far as devices go, I've had good luck with 2N404s and AC170s. The following table lists the parameters for Germanium transistors. I have, however, been hankering after a germanium fuzz face and so had a look inside my fuzz face. Its never really done it for me so I mostly use a BC108 Sunface. And now I have a healthy supply of tested devices for future builds. 1 Dear All, Ive got a Dennis Cornell reissue fuzz face (grey one from about 2001-ish). I like cork sniffing, it turns out, even in a situation like this where the result is that I find out I don't think it ends up making a difference. Are you one of those people? If so: buy a set!Īll that said, I don't regret sourcing and testing my own supply. What I'm saying is, the testing is itself tempermental and seems to drive some people crazy. Get the best deals on Germanium Transistor Ac128 when you shop the largest online selection at. The transistor used in these projects is coded AC128. There are many types of transistor available. People will buy them and then other people will buy them and then people will want to know if their AC128 sounds like the NKT that costs 595 on ebay. Id almost guarantee the AC128 will be an option before too long. The transistor is a small electronic device which has taken the place of the valve used in older electronic equipment. Its almost as if people simply want to choose their transistor and then pretend they have something special. You'll have the device in the sockets and just the lightest touch will send the readings all over creation. The main component in the projects is the transistor. It also gives you a good sense of just how temperature dependant germaniums are. Another headache buying a set avoids.ģ) Then you have to actually measure all the devices. This is easy to get from Mouser, but it takes time to get. AC128 transistors are a popular choice for fuzz and overdrive pedals: used in the right configuration, the performance curves on these selected transistors. AC128 Germanium PNP Transistor in boxModel: AC128Type: PNP - GermaniumhFE: 60Leakage current: 7 A All our transistor are fully tested with two calibrated. But if you're going to build it you have to buy a specialized resistor (I think it's 2.49K 1% but don't hold me to that) to make the math work out. Lots of great info on Ge devices (thank you Mr. It's on GEOFEX and is worth looking at in any case. Keen has a simple circuit for testing Ge transistors. Understanding this in advance is important.Ģ) R.G. You might luck out and get a lot that are mostly keepers. You might get entire lots that are basically junk. bulb type): 2N185 2SB222 AC105 AC117 AC124 AC178 AC188 SFT131. The thing you have to accept is that you are, in fact, buying raw stock! This means you're paying for 10 or 20 or 50 transistors at a time, and at the end of the day only 20-30% are going to be useable. If you're going to do it for the love, then some comments regarding those three considerations:ġ) Sourcing: If you look on eBay, for instance, there are sellers who sell raw stock. So if you're not in it for the love, it's almost certaintly not worth it.
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#AC128 TRANSISTOR HOW TO#
It's not difficult, but it is time consuming. How to Test Germanium Transistors - We use these AC128 transistors in our Fuzz Face Clone Pedal Kit. It means you have to:ģ) Use the test circuit to sort your raw stock so you can use it intelligently This is more involved than you might like or immediately recognize. If you're going to do multiple builds, then it can make sense to source and sort your own supply. Sure, they're expensive, but you know you're getting the good stuff and you don't have to expend all kinds of time and effort sorting things yourself. Magnatec AC128 pricing and available inventory from 2 authorized distributor. If you're just doing one FF and have no future plans to make other fuzzes, then I'd say bite the bullet and just pay Small Bear or another reputable seller for a set you like the look of. You will find thousands of tubes or valves with interesting links.
NPN germanium alloy transistor intended as low power amplifier in AF applications.Īlso made by Philips and related manufacturing plants.With regard to cost, I guess it depends on how you're looking at things. My Tube/Semi » AC127 You reach this tube or valve page from a search after clicking the 'tubes' tab or by clicking a tube on a radio model page.
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