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Ac128 hfe. 3Mhz Hfe = 51-60 Genaue Daten finden sie im Datenblatt.
. PicClick Insights - A Pair of AC128 Transistors - Original Vintage Germanium - Hfe ≈ 93 & 94 - NOS PicClick Exclusive. SKU: Q-AC128. As Somnif said, changing up hfe's might just result in the pot levels being slightly Feb 2, 2021 · Interestingly later reissue editions of the Fuzz Face did feature AC128’s, while there seems to be no empirical evidence for them having appeared earlier on. I'd like to try my hand at building a fuzz pedal, perhaps a Tonebender MKI or II. Sep 5, 2020 · Another sketch 3 o’clock Fuzz. Model: AC128; Type: PNP - Germanium; hFE: 60; Leakage current: 7 µA; All our transistor are fully tested with two calibrated transistor analyzers: Metrix 302A & Metrix 675A. Für eine genau ausgemessene Kennlinie, nehmen sie bitte mit uns Kontakt… Oct 1, 2012 · http://www. Any Germanium PNP will technically work, though there are suggested gain (hfe) values for both. 43. 15 sold. It is a moderate gain (90 typical) device with only modest frequency response. In den Warenkorb; Germaniumtransistor PNP AC128 HFE 140-150 4,50 € inkl. Alternative transistors to use within Fuzz Face are; BC183, BC109, BC108, CV7005, BC108C, NKT275, etc. Similar to the OC75, OC76, 2N45, 2N215, AC128. according to this site: AC128 Germanium Small Signal Transistors. I watched a JHS video about stacking pedals and a That Pedal Show video about hitting a overdrive Apr 4, 2013 · GT308V for PNP and MP38A for NPN are both great. You can buy our transistors in 4 pcs. Page: 4 Pages. Weiterlesen; Germaniumtransistor PNP AC128 HFE Part #: AC128. All we have to do is flip the transistor over and it can be powered from the same supply as the rest of your pedals. AC126 Transistor Datasheet pdf, AC126 Equivalent. Weiterlesen; Germaniumtransistor PNP AC128 HFE 140-150 4 I used paint markers to add a color dot representing a range of leakage (with the “buckets” getting bigger as leakage goes up — the difference between 50-100uA matters about as much to me than the difference between 500-1000uA) and then bagged them in groups by hFE figuring that a range of 5-10 is close enough for pedal purposes. 1 sold, 0 available. 2MHz, 0. Someone in Aron's Stompbox Forum said that placing a 100pF capacitor across the Collector-Base junction of the transistors in a Silicon Fuzz Face clone would help control the gain and Fuzz Factory Clone. A key difference to the Fuzz Face was in the choice of transistors - which really was just an opportunistic cost-saving choice. Brand New. Emiter current Feb 26, 2023 · ドットなしを30個入手したときにhfeを測定してみましたが、20度の室温でhfeは60-180程度までのばらつきがありました。 (ゲルマニウムトランジスタは温度によって数値が変化します。) AC128. 90. Russischer PNP Germaniumtransistor GT308 aus Militärbeständen Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Ucb= -20V Uce= -12V Ueb= -3V Icmax = -50mA Ptot = 150mW fmax = 120Mhz HFE 80-90 Für eine genau ausgemessene Kennlinie, nehmen sie bitte mit uns Kontakt auf. Tungsram germanium Transistor AC128, NOS condition. 6 Results. Condition: NEW, NOS, straight from the factory box. Products. 00. At least the build works, and i like the sounds i’m getting, just would be interested for some technical know how on whats up with my setup 🙂 . It can also be used in the various switching applications. i socketed the power supply points, transistors, and electros so i could try it as pnp or npnthe pnp ge was so nice, there was no looking back. 4 pcs. TheHammer1982 Well PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 290-300 Genaue Daten und Kennlinien finden sie im Datenblatt. 2D-Model and Dimensions The NTE158 was pretty noisy for some reason (hfe - 104), but these new transistors are much more quiet even though the leakage is through the roof on them. Manufacturer: List of Unclassifed Manufacturers. 20 % MwSt. Feb 11, 2008 · AC128 PNP Germanium Transistor transistors and I replaced the Feedback Loop Resistor with a Potentiometer to get much higher gain so I could use low hfe xistors. I noticed this wasn't due to the leakage- leakage was well Nov 19, 2020 · FuzzFace LTspice AC128 Hfe (Low,High) LTspiceで3種類のAC128ゲルマニウムトランジスタを準備しました。 VL – AC128 β=70 (DIYstmpboxの掲示板からお借りしたモノ) L – AC128 LOWGAIN β=85(ELECTROSMASHからお借りしたモノ) H – AC128 HIGHGAIN β=125 (ELECTROSMASHからお借りしたモノ) PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 150-160 Genaue Daten und Kennlinien finden sie im Datenblatt. Weiterlesen; Germaniumtransistor PNP AC128 HFE 240-250 4,50 € inkl. B PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 90-100 Genaue Daten und Kennlinien finden sie im Datenblatt. PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 160-170 Genaue Daten und Kennlinien finden sie im Datenblatt. Reactions: andare and TheHammer1982. that are in my original 1972 FF also have an hfe of 500 The AC128 PNP Ge's that were in the original model rate out at 90 Jan 9, 2007 · with AC188 what hFE do you suggest? hi or low values? I would be jelly pie if I would say the gains should be different than with AC128. 460 Jul 3, 2020 · The idea for this pedal was that I had some low gain AC128 transistors (~27 & 60 hfe) laying around, why not try and come up with a germanium overdrive. synthrotek. Weiterlesen; Germaniumtransistor PNP AC128 HFE 60-70 4,50 € inkl. Jul 20, 2010 · I recently bought some AC128 NOS PNP transistors from Dr Tweek in the UK. The Fuzz Face is a distortion guitar pedal designed in London by Arbitrer Electronics Ltd in the autumn of 1966. Weiterlesen; Germaniumtransistor PNP GT308 HFE 60-70 3,00 € inkl. Polarity: PNP. Finally, adding a 500 Ohm resistor between the +9 V power supply (that is to say mass) and the output jack to reduce the level of noise due to the power supply. If you're in Europe I know das musikding sells them and you can get specific hfe ranges (70-79, 80-89). NKT275が入手出来ない場合はAC128もおすすめです。 Mar 30, 2013 · - Q3: AC128 (hfe = 110). Weiterlesen; Germaniumtransistor PNP AC128 HFE 210-220 4,50 € inkl. Otherwise just using my FF board, and the Hfe [no leak check on it] meter on my DMM to find good sounding ones. Germaniumtransistor PNP GT308 HFE 60-70 3,00 € inkl. 17mA. By lining up the pins of the transistor with the connectors on the multimeter and setting the dial on the multimeter to hFE, you should be able to start measuring the gain levels of Transistor Pinouts and General Data. I have a few old PNP germ trannies to try, some OC72 (hfe between 56-98), a few AC128 (hfe around 120) and some 2sc270, OC44, OC71. Those 2 give me hfe around 95 and 140. Can be used in Darlington Pair. 00 shipping. Both are specifically selected eachone with its proper gain (HFE) for producing that magical tones. SO: 80-120 for example, or 100-100. 31 32 AC128/03 PNP 4 208 133 2. Germaniumtransistor PNP AC128 HFE 80-90 4,50 € inkl. This explains why it is still possible to find nice new-old-stock of these jewels. TimeTravel Audio LTD (4924) 100% positive; AC128 Germanium Transistors , NOS May 25, 2011 · With the Zonk, everything points to trannie selection being paramount. The second Transistor should have hfe of 110-130 approx. MH2009A (MEM2009A) TESLA 6-chanel Analogue Switch IC 16-PIN DIP. Just remember that "Germanium" says more than a specific number. 8 0. Beginner Packages Germaniumtransistor PNP GT308 HFE 120-130 3,00 € inkl. Jul 29, 2019 · This was paired with the NTE123 Transistor (Silicon) in Cesar Diaz's cool Texas Square Face Fuzz. Dr Tweek has made me a happy man EXPERIENCED is equipped with 2 transistors Germanium type, AC128, brand MULLARD. The complementary AC128 transistor is the NPN AC127 transistor. AC125 Transistor Datasheet pdf, AC125 Equivalent. EDIT: Yup, turns out it was the transistors; HFE was waaaay too low. These leakage currents seem normal for most Germanium transistors I have measured, but they are enormous compared to most Silicon transistors. The fact is that the AC128 is not a super high quality transistor, and wasn't at the time. 1. Nun die entscheidende Frage: Bei welcher Temperatur messen, bzw gibt es einen linearen Zusammenhang zwischen HFE und Temperatur, um den HFE Wert auszurechnen? PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 70-80 Genaue Daten und Kennlinien finden sie im Datenblatt. The maximum The fact is that the AC128 is not a super high quality transistor, and wasn't at the time. I just noticed that I do get a bit better sustain playing on my other strat with emg sa pickups. AC128 Germanium PNP Transistor in box. AC128 (Air Canada) - Live flight status, scheduled flights, flight arrival and departure times, flight tracks and playback, flight route and airport The world’s most popular flight tracker. Oct 29, 2012 · q2 pnpゲルマ ac128 hfe:64(118) リーク電流を差し引いた真のhfe、()内はテスター値 Q3 PNPゲルマ AC128 hFE:102(171) Q2 , Q3 共にリーク電流が多めで、69 Fuzz には相性が悪かったものです。 - Q3: AC128 (hfe = 110). Any input or advice you can give on this situation :). 3 0. Jul 29, 2019 · Therefore quite apart from the usual NKT275, AC128 and CV7005 Transistors you tend to find in your typical Germanium Fuzz Face pedals. Für eine genau ausgemessene Kennlinie, nehmen sie bitte mit uns Kontakt auf. 50. A while ago I was looking for any available OC70/71 on the net, couldn't find any. Parameters and Characteristics In terms of technical specifications, the AC128 has a maximum collector current of 100mA and a maximum power dissipation of 300mW. made PNP Germanium transistor tested at 70-100 hFE. You can use either germanium (Q2 AC128 Hfe 60-80 and Q3 AC128 Hfe 100-120) or silicon transistors (2N3906). Where, IC is the collector current and IB is the base current of the circuit. Q1 2G302 hfe 89 leakage 68 Q2 cv7003 hfe 111 leakage 16 Q3 ac128 hfe 220 leakage 250 PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 80-90 Genaue Daten und Kennlinien finden sie im Datenblatt. Status: NOS (New Old Stock) Tested Components: YES . I used the method described here to measure the hfe's of the circuit, and I got about 25 for Q1 and about 50 for Q2. From about 20-120 average. 15W. Weiterlesen; Germaniumtransistor PNP AC128 HFE 250 Tungsram germanium Transistor AC128, NOS condition. Jul 15, 2020 · Hi, Is there any difference between AC128 and Ac128 01 transisitors except built on heatsink and higher current ratings? Thanks, Alex PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 170-180 Genaue Daten und Kennlinien finden sie im Datenblatt. . A lot of discussions about this. Für eine genau ausgemessene Kennlinie, nehmen sie bitte mit uns Kontakt… AC128 Germanium Transistor (PNP hfe 100-130) New production U. After this early germanium years, the production switched to the modern, temperature independent, and more stable silicon transistors like the BC108C, BC109C, and BC209C. to my ear, the ac128 won the shootout for tonefulness. Track planes in real-time on our flight tracker map and get up-to-date flight status & airport information. $1. It is recommended to use sockets for the germanium transistors. (Tj = 75°C) Oj-amb in free air 32 JOO 180 <10 500 AC128 Datasheet. Ac128 hfe at 95 and 120 in the Ge. Weiterlesen; Germaniumtransistor PNP AC128 HFE 120-130 4,50 € inkl. Fuzz Face with Mullard AC128 hFE 160/180 Recorded at Camden RecordsA few days ago visited Camden Re In our box we mount the original, superior AC128 because we know that the original Fuzz Face it has been projected and created for this germanium beauty. 90 +$7. $4. Used in the early version of Arbiter fuzz guitar effect. The first FF's manufactured in the UK used the AC128, a 45-165 Hfe European germanium PNP transistor, cheap/common at that time (later on replaced by the Newmarket NKT275). P. 2W, HFE=4066 Equivalent to: SFT322, AC128, 2N2706, NKT275. Forward Current Transfer Ratio (hFE), MIN: 100 Noise Figure, dB: - Package: TO1 AC188 Transistor Equivalent Substitute - Cross-Reference Search AC188 Datasheet (PDF) Aug 13, 2013 · I bought a relatively expensive digital multimeter with an hFE function (hFE is the measurement unit for transistor gain) and dutifully test every transistor. That's all I have to say after building this pedal. AC128 Transistor Explained / Description. 3Mhz Hfe = 61-70 Genaue Daten finden sie im Datenblatt. Case styles shown are for the most common types. Each transistor come with his test report. There is a lot of fake and imitation transistors out here because i have been on the search for a decent pair for 3 months. and switching", cost 15p Wow 3 shillings in old money. May 20, 2007 · 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. Vivek Feb 27, 2024 · 67 likes, 3 comments - firecrackerworks on February 27, 2024: "Minha versão do Fuzz Face Germanium AC128 Q1 hFE +/- 80 90 AC128 Q2 hFE +/- 120 135 Controle de Volume Controle de BIAS Q1 Controle de BIAS Q2 A Chavinha alterna capacitores de entrada entre 1uf (normal) e 100nf (corte de graves) Não , não tem controle de ganho. For higher gain the GT402B are nice for PNP and ranged from 80 to 190 hfe. Working much better now, but still needs a bit of fiddling. Germaniumtransistor PNP AC128 HFE 200-210 4,50 € inkl. 25A, 1. Messung an sich funktioniert. zzgl. Thanks for all your help! Hey guys So this is really dumb, but I simply cannot get my ff clone to work! Jan 15, 2024 · Q3 ac128 hfe 220 leakage 250 What’s your hfe and leakage in your transistors? Last edited: Jan 15, 2024. Fuzz Face with Mullard AC128 hFE 160/180 Recorded at Camden Records A few days ago visited PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 200-210 Genaue Daten und Kennlinien finden sie im Datenblatt. *Q2 = AC128 - hfe 100 *Q3 = AC128 - hfe 120: Name: Andrew: Date: 11/18/2007: Build Report: Wow. Thanks again. I set the first stage up as an AC128 Darlington Pair and replaced the fixed collector Rs with trimmers. The MPSA18 has an hfe of 500! But then again, the BC108C trans. Silicon material alternative for AC128 are 2N2905, 2N4032, 2N3109, 2N3107, BC337. It was HIGHLY variable in gain. Size:181K siemens ac127. 42 shipping. Unfortunately they are both in the same hfe range of about 70-80. All pin orientations are shown as you are looking at the bottom of the transistor. Habe mir jetzt die Schaltung nachgebastelt und auf das Problem gestossen, das die AC128 sehr sehr sehr sehr empfindlich auf Temperatur reagieren. PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 130-140 Genaue Daten und Kennlinien finden sie im Datenblatt. 50 and 70 or 110 and 140. Next Page >> << Prev Page. Forward Current Transfer Ratio (hFE), MIN: 55 Noise Figure, dB: - I have started testing the various components on my pedal build, and I had acquired a Ge AC128 pairing that was supposed to have hfe 70-85 for Q1 and 120-140 for Q2. Collector Capacitance (Cc): 200 pF. BC108 Transistor Explained / Description: BC108 is an NPN metal case transistor available in TO-18 package. Weiterlesen; Germaniumtransistor PNP AC128 HFE 230-240 4,50 € inkl. 5VになるようR1bを調整する The AC128 is a good general-purpose replacement for OC71, OC78 and OC81. My question here is, is the actual transistor selection important for each position, or is it more important just to get the hfe and leakage right? Feb 11, 2008 · OC71, 75mW, 11 kHz, 30V, Hfe 30 - 75 @ 3mA, "audio amplifiers", cost 12p OC76, 75mW, 350 kHz, 32V, Hfe 45 (minimum) @ 10mA, "G. Aug 26, 2023 · I first had 2x ac128 in Q1and Q3 and Texas Instruments 2G371 A in Q2 but it wasn’t great. This analysis covers the first Arbitrer Fuzz Face model equipped with PNP germanium transistors from the first releases. max. 4 views, 0 likes, 0 loves, 0 comments, 0 shares, Facebook Watch Videos from Rhodium Electronics: Another sketch 3 o’clock Fuzz. 19mA, with the Peak I get an Hfe of 102 and a Leakage Current of 0. 3Mhz Hfe = 101-110 Genaue Daten finden sie im Datenblatt. Weiterlesen; Germaniumtransistor PNP AC128 HFE 130-140 4,50 € inkl. hFE: 50 - 90. Still experimenting with transistors, have another few AC128's on order, this works for now but is a little low on gain. But over time, I’ve found that a) the vast majority of transistors I test are just fine, and b) the “rules” about optimal hFE levels for classic fuzz circuits often aren’t true. 3Mhz Hfe = 51-60 Genaue Daten finden sie im Datenblatt. item 2 AC128 V Tungsram PNP Germanium Transistor NOS Tested - Choose hFE AC128 V Tungsram PNP Germanium Transistor NOS Tested - Choose hFE. Weiterlesen; Germaniumtransistor PNP AC128 HFE 70-80 PNP Germaniumtransistor AC125 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -12V Ueb= -10V Icmax = -100mA Ptot = 500mW fmax = 1. Check your specific manufacturer's datasheet for actual rated hFE, or better yet, measure it to be sure. AC128 - looking - me too; AC128 - looking - me too. ID hfe Ube Ic Iceo Ices Part# Type 1 81 98 1. Package: TO-1 can . Weiterlesen; Germaniumtransistor PNP AC128 HFE 70-80 AC128 Transistor Germanium - Case: TO1 Make: Motorola Semiconductor Apr 4, 2023 · AC128 Germanium Transistors , NOS Tungsram ,Tested Multiple HFE Effects Pedal. I used AC128 which i got off Ebay – Q2 HFE:65, LC:0. Aug 26, 2007 · However, its hfe of 200 sounds like a little much. O volume da guitarra oferece muita dinâmica, com pequenos ajustes AC128/ACl76-These two transistors form part of the new hfe lcso (Vee = -I0V 1£ = 0mA) Ptot. comHow to Test Germanium Transistors - We use these AC128 transistors in our Fuzz Face Clone Pedal Kit. They both ranged from 50 to 90 hfe with either zero or extremely low leakage. To choosing an specific hFE transistor, please enter here Apr 4, 2023 · AC128 Germanium Transistors , NOS Tungsram ,Tested Multiple HFE Effects Pedal. Weiterlesen; Germaniumtransistor PNP AC128 HFE 80-90 Germaniumtransistor PNP AC128 HFE 60-70 4,50 € inkl. Looking for a specific hFE?. Part #: AC128. GT1322 - Ge, PNP, 32V, 0. $9. Weiterlesen; Germaniumtransistor PNP AC128 HFE 90-100 4,50 PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 60-70 Genaue Daten und Kennlinien finden sie im Datenblatt. Equivalent & Complementary Transistors. File Size: 566Kbytes. 0 new watchers per day, 10 days for sale on eBay. You'll get discount coupons, you won't be spammed too much and can cancel subscription anytime. In den Warenkorb; Germaniumtransistor PNP AC128 HFE 80-90 4,50 € inkl. I never compared them next to each other though. TRANSISTOR SOCKETS. as far as fuzz factory goes most zvex are either ac128 or 2n404 and that's probably Germaniumtransistor PNP AC128 HFE 100-110 4,50 € inkl. Weiterlesen; Germaniumtransistor PNP AC128 HFE 80-90 4,50 € inkl. Note that AC127, AC176 and AC187 are NPN and the others are PNP. Also with differing hfe's. Replacement with modern silicon devices is also a possibility, but it is currently not such a pressing issue as the AF117 series. Any suggestions? Thanks! Germanium transistors: Q2 AC128 (Hfe 60-80) - Q3 AC128 (Hfe 100-120) Silicon transistors: 2N3906 . Russischer PNP Germaniumtransistor GT308 aus Militärbeständen Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Ucb= -20V Uce= -12V Ueb= -3V Icmax = -50mA Ptot = 150mW fmax = 120Mhz HFE 100-110 Für eine genau ausgemessene Kennlinie, nehmen sie bitte mit uns Kontakt auf. AC128 V Tungsram PNP Germanium Transistor NOS Tested - Choose hFE. PNP Germaniumtransistor AC125 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -12V Ueb= -10V Icmax = -100mA Ptot = 500mW fmax = 1. Radio tubes are valves. or Best Offer. Weiterlesen; Germaniumtransistor PNP AC128 HFE 190-200 4,50 € inkl. Same category: 2N3963: Screening Options Available = ;; Polarity = PNP ;; Package = TO18 (TO206AA) ;; Vceo = 80V ;; IC(cont AC128-01 Transistor Datasheet pdf, AC128-01 Equivalent. hFE: *. PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 250-260 Genaue Daten und Kennlinien finden sie im Datenblatt. 4 37 AC128/01 PNP 2 52 164 6. View our privacy policy here Jul 24, 2018 · Hello Guys, I wanna build a Fuzz Face clone using two AC128s i got on ebay. I've heard that the best sound comes with the first transistor hfe= 85 to 95 and the second one at 100+. May 7, 2024 · I bought what are supposed to be PNP Germanium AC128 transistors for a Fuzz Face build, yet when I measure them with my meter, I get 915 hfe for both. C $12. 1 day ago · First post here at DIYStompboxes. They all sounded like fuzz factories to me. Parameters and Characteristics Jul 29, 2021 · The TC1 shows: Hfe, Ube, Ic, Iceo, Ices. I just buy matched set[s from SB, [I got a range of Leakage tested GeQ's, Hfe's like 69 - 180Hfeso I could try them]. PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 190-200 Genaue Daten und Kennlinien finden sie im Datenblatt. Search. It has an hFE (DC current gain) range of 60-120, which is ideal for audio applications. They sound fantastic. Started by ethrbunny, August 31, 2007, 11:44:43 PM. Grow these mods sound, make it less garish and more musical classic fuzz, while keeping the side barge extreme settings. Follow the figures for the correct position of the transistors. You can use 3 pin headers (40 PIN DIP SIP IC SOCKETS ADAPTOR SOLDER TYPE). Germaniumtransistor PNP AC128 HFE 220-230 4,50 € inkl. Weiterlesen; Germaniumtransistor PNP AC128 HFE 160-170 4,50 € inkl. Germaniumtransistor PNP AC128 HFE 170-180 4,50 € inkl. Aug 8, 2011 · I don't suppose you knew or remember the hfe value of the ac128 that you used? There are many examples of these transistors on ebay, npn/pnp matched pairs, untested and tested with hfe values given. AC128 is a TO-1 package transistor. Parameters and Characteristics. Replacement and Equivalent. Für eine genau ausgemessene Kennlinie, nehmen sie bitte mit uns Kontakt… Hello everyone! I have a bunch of ac128 transistors with hfe 200-400 and I am not sure what pedals I could build with them. S. Weiterlesen; Germaniumtransistor PNP GT308 HFE 110 This listing is for a New Old Stock 3AX31B Blue Dot PNP Germanium audio transistor suitable for use in Tonebender style guitar fuzz boxes or as a replacement transistor in the preamplifier stages of many 1960's transistor radios, record players and amplifiers, where it is similar to the OC71, OC75, OC81D, AC125, AC126 and AC128 (when used Apr 2, 2023 · I also have a mini transistor curve tracer and it is absolutely amazing the variation of ':hfe" (gain) these prehistoric crittters have. The magical tones come out when the first transistor' gain is around 60 hfe and the second one (Q2) with 120 hfe. Forward current transfer ratio(hFE) 20. SCHEMATIC Dec 5, 2017 · Gain (hfe) = I C / I B. Download. EXPERIENCED is equipped with 2 transistors Germanium type, AC128k, brand Philips and Tungsram. 3Mhz Hfe = 121-130 Genaue Daten finden sie im Datenblatt. You could also experiment and get a sound you like that goes beyond the "standard". PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 220-230 Genaue Daten und Kennlinien finden sie im Datenblatt. The chance two AC188's differ more in sound than a 188 and a 128 is very big. All transistors were tested using Peak Atlas DCA Pro semiconductor analyzer. You could buy a Fuzz Face combo or maybe there are Fuzz Factory combo packs available. 55 21 AC128/04 PNP PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 260-270 Genaue Daten und Kennlinien finden sie im Datenblatt. Fuzz Face with Mullard AC128 hFE 160/180 New production U. These transistors were made in Bulgaria (ZPP - Botevgrad) in 1970s and 1980s under French license (licensed copy of the SFT322 transistor). Weiterlesen; Germaniumtransistor PNP AC128 HFE 70-80 4,50 € inkl. 7 0. I have measured several hundred AC128's for gain, and they vary from a gain of 16 to probably 180. Parameters and Characteristics Mar 18, 2024 · Germanium PNP transistor AC128 V manufactured by Tungsram. I assume that's not what AC128s usually measure? I'm also assuming my meter is working correctly. TESTED - choose hFE. tried mp16b, 2n404, several 2scxxx's, 2n3906. Applications. Mar 27, 2020 Are they genuine AC128, What is hFE & Leakage PNP1 hFE 70 - 80 PNP2 hFE 110 - 135 . Where amplification of low power is needed we use this transistor. $8. So I decided to changed Q1 for a 2G302 and Q2 to a cv7003 and kept the ac128 in Q3 and that’s what your hearing in the sound clip. Für eine genau ausgemessene Kennlinie, nehmen sie bitte mit uns Kontakt… Russischer PNP Germaniumtransistor GT308 aus Militärbeständen Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Ucb= -20V Uce= -12V Ueb= -3V Icmax = -50mA Ptot = 150mW fmax = 120Mhz HFE 90-100 Für eine genau ausgemessene Kennlinie, nehmen sie bitte mit uns Kontakt auf. Figures for hFE are shown as an average of values from various manufacturers of a said type, where applicable. Does look like "higher spec" though must be honest. Equivalent AC128 transistors are; 2N4032, 2N2905, 2N3109, BC337, 2N3107,etc. Popularity - 0 watchers, 0. Versandkosten. 00 - $12. Ideal for Fuzz pedals. GT402J ~ AC128 Germanium P-N-P transistor, 40V , hfe 30-80 P=600 mW PNP. 13 15 AC128/02 PNP 3 67 93 1 0. all Hfe over the minimum 45 AC128 - PNP Germanium Transistor. I've ordered them and measured and they're usually within the stated range. Oct 8, 2021 · NPN Complementary of AC128 is AC127 . Sep 18, 2007 · I was looking back at some of the recent articles and it suddenly occurred to me that the AC128 buffer using the leaky transistors that I posted a week ago could easily be adapted to work on a negative ground system. Description: GERMANIUM SMALL SIGNAL TRANSISTORS. Question: what hfe should I be looking for? This is C->E Feb 13, 2018 · Every time |I used different transistors in them, ac125, ac128, mp16b, mp20b, basically whatever I had on hand. FX Kits. Jan 31, 2019 · Besides being in the famous original Fuzz Face, the AC128 was used in numerous domestic electronic appliance, and certainly one of the most common European transistor. Apr 19, 2012 · If you can get hold of some OC81's or similar old Newmarket then great, if not use anything but try to aim for around 60-70 hfe for Q1 and Q2, and 110-120 hfe for Q3. 99 shipping. Power dissipation 0. Used for making siren or dual Led or Lamp flasher. AC128 Transistor Datasheet pdf, AC128 Equivalent. May 24, 2012 · i used this layout, for a transistor i used an ac128, hfe of 217. joelorigo Well-known member. In den Warenkorb; Germaniumtransistor PNP GT308 HFE 90-100 3,00 € inkl. A bc108 and a 2n222 in the Si. Current Stock: Overview. 40. I have two fuzz pedals at present, a Langtronics Fuzz (hand built in England with AC128) and a Solid Gold FX Formula 69 (Montreal builder, silicon transistors). 2N404's seem readily available still from eBay so they may be a good choice, or I know shops like Small Bear sell Tone Bender sets that are around the correct gain and so may be May 1, 2015 · トランジスタのhfeのバラつきに対応するため、初段のトランジスタのコレクタの抵抗(R1b)をトリマとする 二段目のトランジスタのコレクタ-グランド間の電圧が4. Also going to try a few NOS Russian MP20A / МП20А, found a few with a good range of Hfe, may worth a shot AC128 Germanium PNP transistor. This is a very crude way of figuring out what the gain levels of the emitter are. Nov 29, 2021 · Minimum & Maximum DC Current Gain (hFE): 110 to 450; Max Storage & Operating temperature Should be: -65 to 150 Centigrade . Fuzz Factory DIY PCB Guitar Sep 5, 2020 · Another sketch about Fuzz. Lot for 20 transistors. Mar 11, 2020 · HFE were 80 and 117, respectively. TimeTravel Audio LTD (4924) Business Registered as business seller. 460 Some multimeters may have an hFE setting and punchouts to insert your transistor. Minimum Purchase: 1 unit. Does anyone know the likelihood of getting a bad one if it's untested or what value is sensible for the hfe, or the effect of different hfe values The NTE158 was pretty noisy for some reason (hfe - 104), but these new transistors are much more quiet even though the leakage is through the roof on them. 300 was unusable, but the unit I tested sounds great with a leakage of 0. 2N2222 : TO-18 Germanium and Silicon Transistor Metal Can You don't typically see a lot of Silicon transistors in metal can casings - but those there are tend to be found in TO-5 and TO-18 formats. To choosing an specific hFE transistor, please enter here PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 100-110 Genaue Daten und Kennlinien finden sie im Datenblatt. Parameters and Characteristics Aug 24, 2021 · Medium gain I’d probably go for approximately Q1 = 120 hFE/Q2 = 200 hFE. Therefore quite apart from the usual NKT275, AC128 and CV7005 Transistors you tend to find in your typical Germanium Fuzz Face pedals. AC128K Transistor Datasheet pdf, AC128K Equivalent. Mar 18, 2018 · When testing the same AC128 transistor, with the TC1 I get an Hfe of 95 and an Iceo of 0. made PNP Germanium transistor tested at 100-130 hFE. 15ma Q1 HFE:63 LC:0. Datasheet: 566Kb/4P. For a Fuzz Factory I think you'll want it to be like a fuzz face: 80ish and 120-130. Material of Transistor: Ge Polarity: PNP Maximum Collector Power Dissipation (Pc): 1 W Maximum Collector-Base Voltage |Vcb|: 32 V Maximum Collector-Emitter Tube AC 128 or Röhre AC128 ID33948, Transistor, Wires and Power/Output shown. Sorting cuts and taking notes. It is quite popular transistor like other transistors of its series which are BC107 and BC109. The AC128 transistor has a voltage rating of 30V and a frequency range of up to 1MHz. Jun 24, 2024 · Its forward current transfer ratio or hFE minimum is 45. Alternative for using in Fuzz Face are BC109, BC183, BC108, BC108C, CV7005, NKT275 . 21ma. I was told that any leakage over 0. pdf AC 127 npn-Transistor legierter npn-Germanium-Transistor Der Transistor AC 127 ist fr die Verwendung als NF-Verstrker geeignet. PNP Germaniumtransistor AC128 Handselektiert bei 20°C mit einem Leckstrom < 300µA Technische Daten: Gehäuse: TO1 Ucb= -32V Uce= -16V Ueb= -10V Icmax = -1A Ptot = 700mW Hfe = 110-120 Genaue Daten und Kennlinien finden sie im Datenblatt. sym ehaygk apnpwy exocn mqhogjl ujd dahgt khahjc qgbu iods