Q11 is a common collector and q12 is a common emitter. All the substitution books i have seen have been highly unreliable. Download book 200 transistor circuits talking electronics. Wikipedia books are maintained by the wikipedia community, particularly wikiproject wikipedia books. Buy international transistor equivalents guide bernard babani publishing radio and electronics books by michaels, adrian isbn. Searching the right transistor for substitution is a skill, if you replace wrong specifications of transistor. Smd devices are, by their very nature, too small to carry conventional semiconductor type numbers.
Basic semiconductor physics, diodes, the nonlinear diode model, load line analysis, large signal diode models, offset diode model, transistors, large signal bjt model, load line analysis, small signal model and transistor amplification. Understanding transistor replacement, substitution and. Before searching for c9012 transistor datasheet you may have thought that it was a npn transistor because it has a letter c in front. Understanding transistor replacement, substitution and information is very important for a electronic repairer. More time is spent figuring out which one to replace and, sometimes, what to replace it with. If c is greater than 1, the transistor isis with both input and output terminals of the transistor open circuited. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. Transistor equivalents for the substitution of modern. This page contains list of freely available e books, online textbooks and tutorials in transistor circuits. Ive tried on c, but the output from decade counteris not sufficient to turn on the relay. The s90 transistor might have a current gain anywhere between 64 and 300. Wikipedia books can also be tagged by the banners of any relevant wikiprojects with classbook. You did not mention how you c90 transistor datasheet hooking up the transistor.
In this tutorial well introduce you to the basics of the most common transistor around. Transistor npn silicon 140v 20a to3 hipower audio amp compl to nte61. Collector npn epitaxial silicon transistor absolute maximum ratings ta25c unless otherwise noted symbol parameter ratings units vcbo collector 1. Baseemitter saturation voltage collectoremitter saturation voltage collector current 0. Diodes and transistors pdf 28p this note covers the following topics. Collector pnp epitaxial silicon transistor absolute maximum ratings. C90, c90 npn small signal transistor, buy c90 transistor.
Alibaba manufacturer directory suppliers, manufacturers. Kec, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The gain of the s90d will be in the range from 64 to 91, s90e ranges from 78 to 112, s90f ranges from 96 to 5, s90g ranges from 112 to 166, s90h ranges from 144 to 202, s90i ranges from 190 to 300. Theyre critical as a control source in just about every modern circuit. World transistor equivalents data az by eca author 4. It goes further and it offers exactly what you were talking in this topic, real replacements like the 80s and 90s replacements crossreference books. A transistor like the pn2222 that has 500 ma continuous 1 a peak spec is common for this application.
Instead, a somewhat arbitrary coding system has grown up, where the device package carries a simple two or threecharacter id code. Download ic database equivalent guide 100 thousand components. High p and i, excellent h linearity, complementary pair with 90123cg9012. Hi, im currently repairing an amp with 2sb688a and 2sc5179 npn pnp complementary pair output transistors.
Bipolar power transistor selection guide january 2003 table of contents product page general purpose transistors horizontal deflection output transistors product page dpak d2pak sot223 ipak to126 todarlington transistors dpak ipak to126 to220 to220f to3p to3pf switching transistors dpak d2pak to92 to126. This pair of transistors will buffer the signal from q3s collector, and provide a high gain as the signal goes to the final stage. Check our section of free e books and guides on transistor circuits now. Cross reference electronic circuits, tv schematics, audio. Can i use 2n2222 transistor instead of c90 transistor in a vu meter. The continuous current is much lower typ 50 to 100 ma. Sts90 npn silicon transistor descriptions general purpose application. The initial 2n identifies the part as a transistor and the rest of the code identifies the particular transistor. Classification of h fei 78 112 96 5 112 166 144 202 190300 300400 rank range 6491 electrical characteristics unless otherwise specified. This is a wikipedia book, a collection of articles which can be downloaded electronically or ordered in print. Dodgy ebay replacements are available but im aware that this is not necessarily the best route to go down. C90, c90 datasheet, c90 npn small signal transistor datasheet, buy c90 transistor. Mj15003 nte equivalent nte60 npn high power transis.
The apidictor was designed in the early 1950s and contained three types of transistor, each of which could be of two specified types, but none of these are in general supply as of the early 2000s. The links at left may help you to research your own replacement transistors. Semiconductor transistor, diode, ic cross reference. C9014, c9014 datasheet, c9014 npn small signal transistor, buy c9014 transistor. Simple circuit stereo audio amplifier with ic lm386. In certain cases, the quoted collector current may be exceeded. Cross reference universal transistor reference page 1. Amplifier of portable radios in class b pushpull operation. But all this is some ones idea of what a equivalent is. All trademarks are properties of their respective owners. Years ago there were books for transistor equivalents.
Most have a way to say i need a transistor like this. Allieds handbook of transistor fundamentals author. Should you find any info that can fill in any of the blanks in the matrix below. Transistor substitution desoldering and replacing a transistor takes very little time. Operating and storage junction temperature range 1.
Dont go for a transistor with a much higher ft as this may increase the risk of oscillation. Transistor equivalent circuits and models learning objectives general dc equivalent circuit ac equivalent circuit equivalent circuit of a cb amplifier effect of source resistance r s on voltage gain equivalent circuit of a ce amplifier equivalent circuit of a cc amplifier smallsignal lowfrequency model or representation. Crossreferences are not magic, understanding of the circuit and a parametric search of the important parameters is much more reliable. Book this book does not require a rating on the quality scale. Transistor equivalents for the substitution of modern transistors in elderly projects.
At the maximum voltage, also called a breakdown voltage bv, electrons. Original transistor type original alternative type modern substitute alternative substitute. Epitaxial planar npn transistor general purpose, switching, c90 datasheet, c90 circuit, c90 data sheet. Select a replacement transistor with equivalent ft. S90 datasheet, jiangsu changjiang electronics technology co,ltd sot23 plasticencapsulate transistors sot23 s90lt1 features 1. That line thats worse than chinese means that its intended to be used with its pnp complimentary transistor the 2n9012 on the output stage hence the class b push pull bit of a power amplifier. Complementary pair with sts9012 ordering information type no. Transistor equivalent circuit with diodes for multimeter test. Vrt comparison table for semiconductors from a to z edition. Vrt comparison table for semiconductors from a to z. Smallsignal transistors replacement list bc86816 bc868, bc86825 equivalent type bc876 bc878 bc880 bc878 equivalent type bc877 bc879 bcf29 bc857 bcf30 bc857b bcf33 bc847b bcf81 bc847c bcp5110 bcp5310 bcp5210 bcp5310 bcp52 bcp53 bcp5410 bcp5510 bcp6810 bcp68, bcp6825 bcp6816 bcp68, bcp6825. Ic cross reference cross reference ci stk cross reference ci tda cross reference ci sharp cross reference hitachi audio ic cross reference and circuit applications smd cross reference and equivalent we make every effort to ensure that the material on this site is accurate, however we do not warrant or represent that the information is free. Aug 25, 2011 crossreferences are not magic, understanding of the circuit and a parametric search of the important parameters is much more reliable.
Most projects will specify a particular transistor, but if necessary you can usually substitute an equivalent transistor from the wide range available. Both transistor chips operating in pushpull amplifier. Everyday low prices and free delivery on eligible orders. Aug 21, 2014 general electric transistor manual if that link goes away, you can sometimes find it for absurd. Download ic database equivalent guide 100 thousand. Most of the time repair tech will refer c as 2sc so that it will be easier for them to search from the databook or internet. What books should one use to study mosfet, bjt transistor. Marking package code sts90 sts90 to92 outline dimensions unit.
Transistors substitutionsequivalents all about circuits. Obviously, amplifiers and oscillators should operate somewhat below this frequency. C90 datasheet, c90 pdf, c90 data sheet, c90 manual, c90 pdf, c90, datenblatt, electronics c90, alldatasheet, free, datasheet, datasheets, data sheet. This section contains free e books and guides on transistor circuits, some of the resources in this section can be viewed online and some of them can be downloaded. Knowing how to substitute an alternate transistor type can speed up your. How good a replacement is a rather complex question, mostly revolving around what you are looking to do with it. Transistor codes surface mount, pnp, npn, choosing. Finding transistor replacement can take you hours if you dont know the right method to do it. The transistor should present a high resistance between the collector and emitter with the base left open circuit as there are two back to back diodes.
International transistor equivalents guide bernard babani. Leon heller, feb 4, spehro pefhany, feb 4, thank guy for all the suggestions. These transistors help to form the input differential stage of the amplifier. Obsolete transistor equivalents all about circuits.
I am getting all the components except the c90 transistor at local shops. The original transistor might need special ordering, or be discontinued and unavailable. Tags datasheet, download, electronic software, ic, transistor post navigation. Nov 30, 2015 transistor gain drops with increasing frequency.
Free transistor circuits books download ebooks online. Ic cross reference cross reference ci stk cross reference ci tda cross reference ci sharp cross reference hitachi audio ic cross reference and circuit applications smd cross reference and equivalent we make every effort to ensure that the material on this site is accurate, however we do not warrant or represent that. A performance comparison waspf transistor output resistance ohms 92 ohms 4. Does anyone have any information on quality equivalents for these transistors. I am planning to make the vu meter as the schematic in the image. Design and application of transistor switching circuits. C9012 transistor datasheet details you should know. Choosing transistor replacements electronics notes. It has been very useful for me because it doesnt provide only the nte replacements. C actually is an european code while 2sc is a japanese code. Diode 1n9148 1n4307 1n4532 diode 1n3605 2n2222 chip 2n2369 transistor se708 ma1704 ma1703 text. It is necessary to ensure that the replacement transistor will be able to operate at the relevant frequencies, so a similar or slightly higher ft is advisable. C90 datasheet vcbo 40v, npn transistor kec, ktc90 datasheet, 2sc90 datasheet, c90 pdf, c90 pinout, c90 schematic, c90 equivalent. Collector npn epitaxial silicon transistor absolute maximum ratings ta25c unless otherwise noted symbol parameter ratings units vcbo collector1.
Theres nothing critical about the vu meter design since its merely switching the leds on and off. If more than a maximum voltage rating is applied to a transistor, it can be permanently damaged. If you install the wrong polarity, the sandwich wont work. I keep looking for equivalent transistors, and sometimes find a website that gives a list equivalent transistor. It looks from the datasheet that the 2n90 has twice the ic continuous collector current of 500ma, compared to a peak in the 3904 of 200ma. You have clicked a page that seems to be very popular. So called equivalent parts, or nte replacements, may not work at all in some cases, because they were worse in some spec, or the circuit was designed with the assumptions that the part had a fairly low bandwidth. A substitute transistor must have the same polarity, either pnp or npn, as the original.
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