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  • Bones Hi Fi: Germanium Transistor Based Audio Power ...

    May 10, 2013· Mullard managed to manufacture their own version of the AD 149 PNP germanium output power transistor in a TO3 package. I've heard doityourself singleended germanium transistor based audio power amps during the mid 1990s and to my ears, they sound as if they have almost unlimited slew rate as in 5million volts per microsecond.

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  • Germanium Transistors Ramble FX

    Can I choose a different transistor type for a Twin Bender? No.  What is special about powering Germanium fuzz pedals? The correct type of Germanium transistor used in many fuzz pedals are special in that they require opposite polarity power. You cannot power two pedals with different polarities from the same power supply.

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  • Semiconductors | Transistors | NTE Electronics

    Transistors . NTE has an extensive selection of transistors. They include: BiPolar transistors; Germanium transistors ; Darlington transistors ; RF transistors from 13 to 870MHz ; Small signal transistors ; High voltage and power transistors ; Field effect transistors ; MOSFET's ; Insulated Gate Bipolar Transistors (IGBT) Matched pairs

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  • Germanium Transistors ThomasNet

    Welcome to the premier industrial source for Germanium Transistors. The companies featured in the following listing offer a comprehensive range of Germanium Transistors, as well as a variety of related products and services. provides numerous search tools, including location, certification and keyword filters, to help you refine your results.

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  • Silicon Bipolar RF Power Transistors

    At MACOM we offer a broad range of bipolar technology RF power transistor products as discrete devices, modules, and pallets from DC to GHz. Our high power bipolar transistors are ideal for civil avionics, communications, networks, radar, and industrial, scientific, and medical applications.

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  • It's Raining Germanium!

    Aug 13, 2013· To my knowledge, nobody is making usable new Ge transistors. There are a few companies making legacy parts for airplanes and military vehicles, but those are the two leg power transistors. 3. DSI in Europe, though most likely made in China, also makes new Germanium transistors, but they are 15 hfe on average, and thus too low for a perfect fuzz ...

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  • Germanium transistors for fuzz 1 Guitar Poppa

    Germanium

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  • What is a Germanium Transistor? (with picture)

    Sep 23, 2019· Germanium alloys offer enhanced transmission rates in highspeed circuitry over silicon, but they are not without their drawbacks. Most properties of a germanium transistor fall below those of a standard silicon transistor, including the maximum power distribution they offer, at around 6 watts versus over 50 watts for silicon, and lower levels of current gain and operating frequencies.

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  • RF RF Power QRPparts

    New Old Stock Silicon Planar Epitaxial and Germanium RF Wideband RF Power Transistors, JFETs.

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  • Transistor Museum Early Germanium Power Transistor History ...

    The 2N68 power transistor was a PNP Germanium device and they now have a threaded bolt hole on top for attachment to an external heatsink for even greater dissipation. Go To Sylvania Early Power Transistors, Page 2 ...

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  • Semiconductor | Transistor | Bipolar transistors |High ...

    Transistors. NTE has an extensive selection of transistors. They include: BiPolar transistors; Germanium transistors; Darlington transistors; RF transistors from 13 to 870MHz; Small signal transistors; High voltage and power transistors; Field effect transistors; MOSFET's ; Insulated Gate Bipolar Transistors (IGBT) Matched pairs

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  • Transistor Museum Early Germanium Power Transistor History ...

    A SURVEY OF EARLY POWER TRANSISTORS . by Joe A. Knight. MOTOROLA 1950s GERMANIUM POWER TRANSISTORS ABOVE, LtoR: To this end several of the major radio parts and radio manufacturers had undertaken major power transistor development programs to see who could be the first to market with these much needed devices.

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  • Texas Instruments Transistor History Google

    Alloy Germanium Power Transistors. Unlike grown junction transistors, alloy transistors could be readily scaled up for high powered audio output. Typical applications were in servo control systems and automobile radios.

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  • Why is germanium considered better than silicium for audio ...

    Why is germanium considered better than silicium for audio applications? ... And remember that germanium transistors must work at lower temperature. ... In modern power output stages dual ...

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  • Power semiconductor device Wikipedia

    Germanium bipolar transistors with substantial power handling capabilities (100 mA collector current) were introduced around 1952; with essentially the same construction as signal devices, but better heat sinking. Power handling capability evolved rapidly, and by 1954 germanium alloy junction transistors with 100 watt dissipation were available.

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  • Germanium transistors for fuzz 1 Guitar Poppa

    Sep 06, 2017· Germanium transistors for fuzz. 1 : Small power output, audio frequencies. Common characteristices of thr AC128 family . Equivalencies in Europe and USSR.

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  • Transistor Silicon transistors |

    Transistor Transistor Silicon transistors: During the 1950s, meanwhile, scientists and engineers at Bell Labs and Texas Instruments were developing advanced technologies needed to produce silicon transistors. Because of its higher melting temperature and greater reactivity, silicon was much more difficult to work with than germanium, but it offered major prospects for better performance ...

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  • Early Power Transistor Evolution, Part 1, Germanium Keysight

    Aug 23, 2012· While germanium transistors have much greater conductivity, lower forward and saturation voltage drops compared to silicon transistors, silicon ultimately won out in the end, especially for power transistor applications. Stay tuned for my second part in an upcoming posting. Discover how silicon evolved to rule the day for power transistors!

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  • Bipolar Transistor BJT University of Pittsburgh

    Bipolar Transistor Basics In the . Diode. tutorials we saw that simple diodes are made up from two pieces of semiconductor material, either silicon or germanium to form a simple PNjunction and we also learnt about their properties and characteristics.

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  • Transistor Wikipedia

    Transistor packages are made of glass, metal, ceramic, or plastic. The package often dictates the power rating and frequency characteristics. Power transistors have larger packages that can be clamped to heat sinks for enhanced cooling. Additionally, most power transistors have the collector or drain physically connected to the metal enclosure.

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  • Germanium and silicon transistor output stage audio ...

    Jun 29, 2018· This "mixed breed" amplifier was used in a Magnavox console stereo in the late 60's when there were PNP power germanium and NPN power silicon transistors at reasonable cost. I thought it would be ...

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  • How to Test Germanium Transistors Fuzz Face AC128 ...

    Oct 01, 2012· How to Test Germanium Transistors We use these AC128 transistors in our Fuzz Face Clone Pedal Kit. You can buy our transistors in our store, or you can buy your own.

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  • ElectroSmash You can Build the Perfect Germanium Fuzz Face

    The first FF's manufactured in the UK used the AC128, a 45165 Hfe European germanium PNP transistor, cheap/common at that time (later on replaced by the Newmarket NKT275). After this early germanium years, the production switched to the modern, temperature independent, and more stable silicon transistors like the BC108C, BC109C, and BC209C.

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  • Transistors | Germanium Transistors | NTE Electronics

    NTE Electronics offers the highest quality Germanium Transistors available. Cookie Consent by Supplying Quality Electronic, Electrical and OEM Components for Over 40 Years!

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  • Germanium Transistors Page 1 Small Bear Electronics

    NPN Hot Germanium For The Big Muff. Add To Cart

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  • Germanium Power Diodes Electrical Engineering Stack Exchange

    Why don't they make germanium power diodes for their lower voltage drop? I have used a diode connected junkbox germanium power transistor for a oneoff low voltage in house current measuring job because it out performed a Phillips BYV1040 1Amp 40V silicon schottky.

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  • Germanium vs. Silicon Transistors Robert Keeley

    Sep 11, 2013· Germanium vs. Silicon Transistors. September 11, 2013; Overdrive/Distortion, Technical; One facet of the design process here at Keeley Electronics comes down to selecting not just the highest quality components for use in our pedals, but …

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  • Germanium Transistors

    1 OC139 NPN Germanium transistor, new old stock, black glass body, made by Philips. Use them to make a fuzz face with negative ground so you can run it off a standard 9v power supply (like the Boss PSA or 1Spot). Gain range is 50110. These are PRETESTED so …

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  • All About Germanium Transistors

    Nov 15, 2017· The most notable downside to germanium transistors comes in that aforementioned inconsistency. Regarding the search for “good” germanium transistors, effects maker and former Jimi Hendrix tech Roger Mayer tells us, “The reality is that you’ve got to buy thousands of them, and then you’ve got to sit down and test them all.

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  • Semiconductors Transistors, Germanium

    Transistor PNP Germanium 50V 10A TO3 Audio Power AMP Package Quantity: 1 Add to Cart. Part No: NTE105. Transistor PNP Germanium 50V ... Transistor PNP Germanium 320V IC=10A TO3 Power Outout Horizontal And Vertical Deflection Package Quantity: 1 Add to Cart. Part No: NTE131. Transistor ...

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  • Germanium Transistors – Mammoth Electronics

    Transistors made of germanium (a semimetallic element) produce a warm, rich, and extremely dynamic sound.

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  • Germanium Transistor Amplifier Circuit Electronics ...

    2 Piece TDA2030A output power transistors connecting the power upgraded 200w amp circuit We all know I think this circuit, the. TDA1514 2X50Watt High Performance HiFi Amplifier Circuit. TDA1514 alone can provide 50 watts of power supply voltage and a maximum of + – 30 volts mute / stantby.

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  • Vintage Radio and Electronics. Germanium Transistors

    GERMANIUM TRANSISTORS The following table lists the parameters for Germanium transistors. The column marked Case is the outline of the transistor case. Note: Not all headings are the same parameter. The case drawings are shown at the bottom of the page. Cases GEC MAZDA STC AEI HIVAC NEWMARKET TEXAS Transistors

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