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 ...

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BFY640-04 4 3 HiRel NPN Silicon Germanium RF Transistor

BFY640-04 IFAG PMM RPD D HIR 1 of 3 V1, November 2012 HiRel NPN Silicon Germanium RF Transistor HiRel Discrete and Microwave Semiconductor High gain low noise RF transistor High maximum stable gain: G ms 24dB at 1.8 GHz Noise figure F = 0.8 dB at 1.8 GHz Noise figure F = 1.1 dB at 6 GHz Hermetically sealed microwave package Space Qualified

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PNP vs NPN fuzz - Effects and Processors - Harmony Central

Dec 05, 2009· But NPN silicon are awesome perfect modern transistors. Silicon of all types are generally great most of the time. Here's the thing about the Silicon vs. Germanium sound... nearly any Silicon circuit can be tuned to sound as good as its Germanium equivalent, it's just a matter of designing the circuit to be optimized to the silicon's spec.

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NPN Germanium transistor list for Fuzz pedals - Slowbean

Feb 23, 2020· My interest in fuzz pedal came from JMI Tone Bender III reissue which belongs to a friend. this pedal has 3 of OC75 glass tube transistors. And, unfortunately, My Sola Sound Bum Fuzz came with 3 of NPN transistors while OC75 is PNP type. then found this web page with germanium and silicone transistor lists […]

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BFY740B-01 4 3 HiRel NPN Silicon Germanium RF Transistor

BFY740B-01 IFAG PMM RPD D HIR 1 of 3 V1, November 2012 HiRel NPN Silicon Germanium RF Transistor HiRel Discrete and Microwave Semiconductor High gain ultra low noise RF transistor Outstanding noise figure F = 0.7 dB at 1.8 GHz Outstanding noise figure F = 1.0 dB at 6 GHz 1 Hermetically sealed microwave package Space Qualified ESCC Detail Spec. No.: …

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BFP740 Datasheet(PDF) - Infineon Technologies AG

NPN Silicon Germanium RF Transistor, BFP740 datasheet, BFP740 circuit, BFP740 data sheet : INFINEON, alldatasheet, datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs, and other semiconductors.

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Transistor - Wikipedia

The first high-frequency transistor was the surface-barrier germanium transistor developed by Philco in 1953, capable of operating up to 60 MHz. These were made by etching depressions into an n-type germanium base from both sides with jets of Indium(III) sulfate until it was a few ten-thouhs of an inch thick. Indium electroplated into the depressions formed the collector …

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Bipolar junction transistor - Wikipedia

A bipolar junction transistor (BJT) is a type of transistor that uses both electrons and electron holes as charge carriers.In contrast, a unipolar transistor, such as a field-effect transistor, uses only one kind of charge carrier.A bipolar transistor allows a small current injected at one of its terminals to control a much larger current flowing between two other terminals, making the …

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Germanium wrap-around photodetectors on Silicon …

Germanium wrap-around photodetectors on Silicon photonics Ryan Going, 1† Tae Joon Seok, Jodi Loo, 1 Kyle Hsu, and Ming C. Wu1,* 1Department of Electrical Engineering and Computer Sciences, University of Californ ia, Berkeley, CA 94720, USA †These authors contributed equally. *[email protected] Abstract: We present a novel waveguide …

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TOSHIBA Transistor Silicon-Germanium NPN Epitaxial Planer ...

Apr 16, 2013· TOSHIBA Transistor Silicon-Germanium NPN Epitaxial Planer Type MT4S300U d UHF-SHF Low Noise Amplifier Application FEATURES x Low Noise Figure :NF=0.55dB(Typ.) (@f=2GHz) x High Gain :|S21e| 2 =16.9dB(Typ.) (@f=2GHz) x 2 kV ESD robustness (HBM) due to integrated protection circuits Marking 1. Collector Absolute Maximum Ratings (Ta = 25°C)

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NPN Germanium Transistor Set - 5 pieces - JoeDocMusic

Germanium transistors continued to be produced into the 1990s (and some still are today) However, the process of producing NPN Ge transistors has so far improved as to approach the quality and reliability of Silicon. So we offer this "kit" of quality NPN Ge for you to build your dream fuzz. The advantages of NPN Ge include:

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What is NPN Transistor: Working of Transistors as a Switch ...

Aug 02, 2017· Working of NPN Transistors: As discussed above, the transistor is a current controlled device which has two depletion layers with specific barrier potential required to diffuse the depletion layer. The barrier potential for a silicon transistor is 0.7V at 25°C and 0.3V at 25°C for a germanium transistor.

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BFU725F NPN wideband silicon germanium RF transistor

NPN wideband silicon germanium RF transistor 1.4 Quick reference data [1] Tsp is the temperature at the solder point of the emitter lead. [2] Gp(max) is the maximum power gain, if K > 1. If K < 1 then Gp(max) = Maximum Stable Gain (MSG). 2. Pinning information 3. Ordering information Table 1. Quick reference data Symbol Parameter Conditions Min ...

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10pcs BFP740 NPN Silicon Germanium RF Transistor SOT-343 ...

BFP740 NPN Silicon Germanium RF Transistor SOT-343 Qty:10pcs. Payment Information we accept Paypal payment only, you can use credit card through PayPal. If you bid or buy more than one item, please pay all of them in one single PayPal transaction. shipping Information

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NPN Wideband Silicon Germanium RF Transistor | NXP ...

NPN silicon germanium microwave transistor for high speed, low noise applications in a plastic, 4-pin dual-emitter SOT343F package. More Less. Features Low noise high linearity RF transistor 110 GHz f T silicon germanium technology Optimal linearity for low current and high gain ...

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DIY fuzzface Swapping silicon transistor for germanium ...

Feb 08, 2014· Someone says it's the germanium transistor, but I tried silicon transistors fuzzes and I can do it as well! Feb 8, 2014 #8. Jake's Dad TDPRI Member. Posts: 97. Joined: Dec 25, 2011 Location: Cypress, Texas. I've got a NPN Fuzz Face built on a GuitarPCB GBOF board that I have been evolving using the Fuzz Clone Mods found on ...

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Fuzz Face™ | General Guitar Gadgets

The Germanium Transistor version and The NPN Silicon Transistor version layouts both have a 10k trimmer (R5T) that is not shown in the schematic. We believe this is a worthy addition to the circuits, giving you more options for the ultimate sound you want.

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Guitar FX Layouts: NPN Silicon Fuzz Face - Germanium Emulation

Jun 02, 2012· NPN Silicon Fuzz Face - Germanium Emulation From an older thread on FSB and DIYSB about using two pairs of piggybacked silicon transistors to have control over the gain. To paraphrase, these were the main points: 1. Take two identical random silicon transistors (for more mojo: your fav fuzz silicons) 2. Tie the BASES together,

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NPN SILICON GERMANIUM RF TRANSISTOR NESG260234

NPN SILICON GERMANIUM RF TRANSISTOR NESG260234 NPN SiGe RF TRANSISTOR FOR MEDIUM OUTPUT POWER AMPLIFICATION (1 W) 3-PIN POWER MINIMOLD (34 PKG) Document No. PU10547EJ02V0DS (2nd edition) Date Published May 2005 CP(K) FEATURES • This product is suitable for medium output power (1 W) amplification P out = 30 dBm TYP. @ …

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BFP640 Datasheet, PDF - alldatasheet.com

BFP640 Datasheet NPN Silicon Germanium RF Transistor - Infineon Technologies AG Low Noise Silicon Germanium Bipolar RF Transistor, BFP640F

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Npn silicon and pnp germanium in ... - Antique Radio Forums

There was a brief period when silicon transistors cost more than germanium. Even more so for power transistors. And PNP silicon power was more expensive than NPN. So there was an incentive to mix 'em up. Around 1965, I made a power amp using a TO-36 PNP germanium with a tiny blue Bendix NPN silicon power transistor. Both probably from Poly packs.

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What is NPN transistor? Definition, Construction, Working ...

In NPN transistor the majority carriers are electrons. Construction of NPN transistor. As we are already familiar with the fact that NPN transistor is formed when a p-type semiconductor material (either Silicon or Germanium) is fused between two n-type semiconductor material. The figure below represents the constructional structure of NPN ...

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(PDF) Study on ionization damage of silicon-germanium ...

The degradations in NPN silicon-germanium (SiGe) heterojunction bipolar transistors (HBTs) were fully studied in this work, by means of 25-MeV Si, …

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50pcs BFP740 NPN Silicon Germanium RF Transistor SOT-343 ...

Find many great new & used options and get the best deals for 50pcs BFP740 NPN Silicon Germanium RF Transistor SOT-343 at the best online prices at …

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NTE130 Transistor NPN Silicon 100V 15A TO-3 Audio Power ...

NPN Silicon Complementary Transistor, Audio Power Amp, Switch, 100V, 15 Amp. $7.00. Free shipping Free shipping Free shipping. 10PCS 2N3055 TO-3 NPN Amplifier Switch Transistor Audio Power Metal Case 15A/60V. ... Npn Germanium In Transistors, Motorola NPN BJT Power Transistors, Small Signal Transistor NPN BJT Transistors,

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NPN SILICON GERMANIUM RF TRANSISTOR NESG270034

NPN SILICON GERMANIUM RF TRANSISTOR NESG270034 NPN SiGe RF TRANSISTOR FOR MEDIUM OUTPUT POWER AMPLIFICATION (2 W) 3-PIN POWER MINIMOLD (34 PKG) Document No. PU10577EJ02V0DS (2nd edition) Date Published December 2007 NS FEATURES • This product is suitable for medium output power (2 W) amplification P out = 33.5 dBm TYP. …

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Favorite NPN PNP Transistors for FUZZ pedals? | My Les ...

Apr 02, 2011· Germanium tends to be a bit softer and warmer than Silicon, but Silicon tends to maintain attack and be less "mushy". Germanium also tends to be lower in gain than Silicon, and most Germanium transistors are less stable. Germanium is usually used for more vintage type stuff, and Silicon for a more modern type sound basically (if that helps).

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Germanium transistors: logic circuits in the IBM 1401 computer

But the germanium alloy-junction transistors were completely different from modern silicon planar transistors. The photo below shows the construction of an NPN alloy transistor, It consists of a P-type germanium crystal base with tin/antimony beads fused on either side to form the emitter and collector.

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Fuzz Central -- Arbiter Fuzz Face

May 20, 2007· A problem with Silicon transistors that doesn't seem to exist with Germanium is that they can have too much gain. Too much gain will cause a Fuzz Face to sound horrid. With Silicon it becomes very difficult to stick with the Q1 hfe of 70 and Q2 hfe of 120, because most Silicon transistors are way over 120 to begin with.

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Transistors | Germanium Transistors | NTE Electronics

Germanium Transistor Selection Guide The development of the germanium transistor in 1948 opened the door to countless applications of solid state electronics. From 1950 through the early 1970s, this area provided an increasing market for germanium, but then high-purity silicon began replacing germanium in transistors, diodes, and rectifiers.

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Does it matter if I replace germanium transistors with ...

Aug 11, 2017· The main difference between germanium and silicon transistors in switching circuits, be they either PNP or NPN transistors is that VBE for small germanium is about 0.3 volts whilst those of silicon are about 0.7 volts. Also germanium are more sensitive to heat than silicon and can end up in thermal runaway and destroy themselves.

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BFP740 datasheet(1/4 Pages) INFINEON | NPN Silicon ...

BFP740Nov-19-20041NPN Silicon Germanium RF Transistor*• High gain ultra low noise RF transistor• Provides outstanding performance for a wide rangeof wireless applications up to 10 GHz• Ideal for CDMA and WLAN applications• Outstanding noise figure F = 0.5 dB at 1.8 GHzOutstanding noise figure F = 0.85 dB at 6 GHz datasheet search, datasheets, Datasheet …

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Germanium vs. Silicon Transistors - Robert Keeley

Sep 11, 2013· Germanium will sound a tad different than silicon in a given circuit, but it's also worth pointing out that a great many excellent sounding pedals uses silicon components. "It's funny actually, the exact limitations that caused Germanium transistors to fall from favor in large scale electronics manufacturing, are the same attributes that ...

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Silicon Germanium Transistor NPN PNP MOSFET Thyristor ...

BUH1215 NPN, 2SC2307 NPN, 2SC5904 NPN, 2SK2610 n-Channel. Silicon Germanium Transistor NPN PNP MOSFET Thyristor Triac Power | eBay Thyristor Power T160. 2SC4293 NPN, 2SC5287 NPN, 2SC4388 NPN, 2SD1878 NPN. 2SC4294 NPN, 2SC4923 NPN, 2SB1560 PNP, 2SA1673 PNP, SSH6NA80F.

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