International transistor equivalents guide bernard babani. Standard bipolar transistors 267 automotive bipolar transistors 69 parametric search. Universally useful and adaptable, the transistor is an essential component of electronic circuitry. Wherever you need to control the flow of electricity in a device from transistor radios, to diodes, to circuit boards you can find a great collection of transistors on ebay. Datasheet archive tesla datasheets oc70 oc71 oc72 oc75 oc76 oc77 oc169 oc170 101nu70. Free transistor circuits books download ebooks online. Tungsram made other transistors equivalent to oc types, presumably starting later. If its a single bias resistor, then you might not need to make any changes.
This easytouse book covers all transistor types including. Transistor equivalent circuit with diodes for multimeter test. Oc44 transistor pnp oc45 transistor pnp oc71 transistor pnp two oc72 transistor which are a matched pair. This page contains list of freely available e books, online textbooks and tutorials in transistor circuits. As hostilities started to draw to a close, bell laboratories realised that there were major possibilities for semiconductor technology. Vintage mullard semiconductors andrew wylies watercolours pages. Dont go for a transistor with a much higher ft as this may increase the risk of oscillation.
Handbook of transistor equivalents and substitutes book. They have a fourth connection, enabling the housing of the transistor to be connected to ground. Is there anything available to see if a particular transistor can be replaced with a different one. In this tutorial well introduce you to the basics of the most common transistor around. Diodes and transistors pdf 28p this note covers the following topics. Transistors are nonlinear devices but all circuit analysis is premised on the circuit elements being linear so this causes. The image shows the oc71 glass case, painted black, with below it the oc72. There are books galore on this but surely someone knows of a site that has them listed and searchable my query is a simple one i have no 2n5551 transistors on hand and i want to see if one in my.
Ac122 datasheet germanium small signal transistors. Should you find any info that can fill in any of the blanks in the matrix below. Sample pages of the vrt comparison books from eca edition 20102011 vrt volume 1 from a to z split into 2 books vrt1a and vrt1b 1496 pages isbn 9783937469379 vrt volume 2 from 0 to 680 pages isbn 9783937469386. A transistor equivalent circuit is usually a linear approximation that simplifies circuit analysis of transistor circuit. 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. Jul 21, 20 ive just been flicking through a few old transistor applications books and noticed most if not all used pnp transistors and negative power supplys, however the vast majority of circuits ive seen in british electronics books from the 70s to 90s have almost always used npn transistors and standard power supplies. Years ago there were books for transistor equivalents. Hi friends i need a software or any book to find the equivalent or substitute of. The bipolar transistor is the most important active circuit element used in modern electronics, and it forms the basis of most linear and digital ics and opamps, etc. The book is comprised of 16 chapters that cover amplifiers, oscillators, and generators. One of my interests is restoring vintage transistor radios.
Tube oc 75 or rohre oc75 id33808, transistor, wires and audio frequency shown. Then, in 1956, apparently in an effort to give their transistor line better adaptability in the u. Any orders placed through this store will not be honored or fulfilled. Buy online discounted oc series transistors from silicon. Select a replacement transistor with equivalent ft. But all this is some ones idea of what a equivalent is. For the pointcontact transistor a small slab of ntype germanium consisting of a single crystal and having a volume resistivity of 5. 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. Germaniumtransistoren by transistor vergleichsliste and a great selection of related books, art and collectibles available now at. Oc72 get103 cv7074 ti germanium transistor nos ebay. Hello everyone, ive just been flicking through a few old transistor applications books and noticed most if not all used pnp transistors and negative power supplys, however the vast majority of circuits ive seen in british electronics books from the 70s to 90s have almost always used npn transistors and standard power supplies. Free transistor circuits books download ebooks online textbooks. Aug 21, 2014 general electric transistor manual if that link goes away, you can sometimes find it for absurd.
Full text of mullard data book 196566 internet archive. Or if you know the transistor you need then simply type the first 4 or digits in the above search box. 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. Finding transistor replacement can take you hours if you dont know the right method to do it. Design and application of transistor switching circuits. High voltage 75v video amplifier for transistor tvs.
Vrt comparison table for semiconductors from a to z edition. What books should one use to study mosfet, bjt transistor. For information on the operation and use of transistors in circuits please see the transistor circuits page. Bgmicro electronics parts, kits, projects, surplus, diy. Others, shortform transistor datasheet guide, scan, pdf. I keep looking for equivalent transistors, and sometimes find a website that gives a list equivalent transistor. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. Reliable information about the coronavirus covid19 is available from the world health organization current situation, international travel. Being an audio output transistor roughly equivalent to a mullard oc72, it wasnt too hot as an rf transistor. Transistor museum early germanium power transistor history by. This eightpart series focuses on basic transistor theory, characteristics, and presents a wide range of. There is no listed equivalent to the af118 and where replacement is needed for an old transistor tv, it may be necessary to rejig the circuit to take a suitably rated silicon device. Searching the right transistor for substitution is a skill, if you replace wrong specifications of transistor i. In the spring of 1945 a major meeting was called to discuss the future research into them this was a pivotal point in the transistor history.
Still, to me transistors are very technical i need a transistor book that is about 8th grade level with more diagrams. 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. Transistor equivalents for the substitution of modern. Data on many transistors is available on my valve data cdrom. How to find equivalent transistor easy way duration. If you have already placed an order then we will be sending it asap. If not, it can usually be obtained from transistor data books. Transistors amplify current, for example they can be used to amplify the small output current from a logic ic so that it can operate a lamp, relay or other high current device. This page covers practical matters such as precautions when soldering and identifying leads.
People underestimate the transistor, especially the bipolar junction transistor, but as some of you may have found out the hard way, theres more to it. Uk 240320 we have decided not to take any more orders at the moment. Small signal transistors oc76 oc75 oc76 oc75 asy76 asy77 asy80 oc72. The design of early transistor radios directly followed tube designs except at lower voltages and the transistor was known as a current amplifying devices rather than a voltage amplifies devices that tubes were labeled. I have an extensive collection of original data sheets and books, and can. Jun 15, 2015 one may cite them here as early germanium high frequency transistors, designed for frequency modulation receivers. This is where you will find all the transistors specifically in the oc series i. Chapter 1 discusses semiconductors and junction nodes, while chapter 2 covers the basic principles of transistors.
The equivalents list may be removed from the main book if desired. The external resistors set an operating bias on the base to the transistor and limit current from the ac signal. Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. The lead connections of the transistors are often included in the service data for the set. For additional information on our pbfree strategy and soldering details, looking for books on transistor circuits. I recently got a book called the radio constructor in which are a lot of radiobuilding projects. But the reliability and failure modes of vintage transistors is interesting, and is the subject of this article. Here is valuable guidance on recently developed communications components and their important applications in industrial, military, and consumer products. Tube oc 72 or rohre oc72 id33685, transistor, wires and poweroutput shown. Numerous and frequentlyupdated resource results are available from this search. Oc72 germanium pnp transistor in a classic so2 case aluminium cover over standard mullard glass test tube. Does anyone know where the site is that you type in a transistor and get a list of equivalent transistor.
The book also includes diagrams and practical circuits. The book describes basic and special diode characteristics, heat waverectifier circuits, transformers, filter capacitors, and rectifier. Theyre critical as a control source in just about every modern circuit. Rca transistor thyristor and diode manual sc14 and a great selection of related books, art and collectibles available now at. Click download file button or copy transistor equivalent book url which shown in textarea when you clicked file title, and paste it into your browsers address bar. How to download transistor equivalent book files to my device. Jan 19, 2015 discover book depositorys huge selection of transistors books online. Understanding transistor replacement, substitution and information is very important for a electronic repairer. Oc72 datasheet, equivalent, cross reference search. Transistor semiconductor history texas instruments rca bell laboratories western electric general transistor fairchild tungsol sylvania mullard philips stc newmarket general electric philco gec motorola shockley faraday willoughby smith william adams richard day charles fritts braun schuster henry round jagadis bose greenleaf pickard alan wilson walter schottky boris davydov nevill mott.
Bipolar, power, rf, digital, igbt, unijunction, fet, jfet, and mosfets. Oc1072 equivalent to the oc72 mediumpower output transistor second from. Uk vintage radio repair and restoration transistor faults. Sn76477 2n4401 free transistor equivalent book semiconductor data handbook. Buy online discounted oc series transistors from siliconark. This book explains the math around the equivalent circuits, which is incredibly helpful to the reader, if the reader will take the time to understand the process. One of the larger surfaces of this germanium slab is soldered on to a metal carrier and thus forms the base. My pocket money didnt extend to the oc44s at one pound ten shillings and sixpence each from roly thomass balmoral radio and tv store but i did save enough to get an ediswan xb102 from direct disposals at ten shillings and sixpence. I have no original tungsram data books or sheets describing any of these. Applies to shipments to germany with our standard courier service dhl when paid via paypal, credit card or lastschrift.
Transistor equivalents for the substitution of modern transistors in elderly projects. Principles of transistor circuits, seventh edition discusses the fundamental concepts of transistor circuits. Oc71 datasheet, equivalent, cross reference search. Buy international transistor equivalents guide bernard babani publishing radio and electronics books by adrian michaels isbn. Of course, after 40 plus years of life, most electrolytic capacitors are suspect and the carboncomposition resistors have drifted high and sometimes become very noisy. Amperex registered their transistors with jetec and the 2oc72 became the 2n282, a matched pair of individual 2n281s, the oc72 equivalent.
I during 80s and 90s, i used to search for components equivalents in books. I hope this clears up some design concerns and please correct any of this if someone spots any errors. If file is multipart dont forget to check all parts before downloading. Transistor equivalent list 8ch pnp darlington transistor array pnp octal darlington transistor arrays equivalent transistor 2sk td62783 equivalent 2sk1078 td62783 pnp darlington transistor array td62504 equivalent text. It uses both sensorless and sine wave drive, thus, magnetosound using 3phase fullwave overlap drive. Everyday low prices and free delivery on eligible orders. The image shows the oc71 glass case, painted black, with below it the oc72, a higher power type, achieved by slipping an aluminium can over the glass tube. The lines and the filled symbols represent the experimental data of the write state and the simulated data of the equivalent transistor, respectively. Is there any webbased or stand alone program to do such service for transistors and ics. Philips described its pointcontact transistors in general terms as follows. Standard bipolar transistors 267 show hide parameters. Mullard then developed a unique glass encapsulation, and in 1954 issued three new alloyjunction audiofrequency transistors, the oc70, oc71 and oc72.
Choosing transistor replacements electronics notes. Imo, the 2 transistor books i got need a good instructor to clarify basic concepts like flow of electrons and holes, reverse bias, forward bias, etc. In practice, the af125 can be used to replace af114115116. These models are very fragile, sensible to static electricity, and therefore to avoid. So just use a pnp silicon, and if the bias resistors ratio are set to g ive.
Free transistor equivalent book transistor bipolar junction. Oc75n datasheet, equivalent, cross reference search. Uk vintage radio repair and restoration transistor. A great book for learning electronics in easy plain language.
Diode, transistor and fet circuits manual is a handbook of circuits based on discrete semiconductor components such as diodes, transistors, and fets. It is shown as a diode for the be pn junction and a current source for the ce junction. An3861sa sensorless motor drive ic for vtr movie cylinder s overview the an3861sa is a sensorless motor drive ic for vtr movie cylinder. The transistor handbook, one in a series of component handbooks, has the answers to all of your daily application questions. The 72v831is a 2k x 9 dual synchronous fifo that is functionally equivalent to two 72v231 fifos in a single package with all associated control, data, and flag lines assigned to separate pins. However, since this book was written in 1963 i cant find any of the parts online.
When the transistor was announced by bell labs in 1948, two uk companies. Oc72 transistors 4 in stock to buy, photo, pdf datasheet. Oc72 datasheet, cross reference, circuit and application notes in pdf format. Download transistor equivalent book files tradownload. This is a wikipedia book, a collection of wikipedia articles that can be easily saved, imported by an external electronic rendering service, and ordered as a printed book. The links at left may help you to research your own replacement transistors. Find data transistor equivalents related suppliers, manufacturers, products and specifications on globalspec a trusted source of data transistor equivalents information. Check our section of free e books and guides on transistor circuits now.
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. Delivery times for other countries and shipping methods can be found on our shipping information page. This book also has a very comprehensive glossary, index, and equations. Understanding transistor replacement, substitution and. The 2n282 came standard with the copper cooling fin. Datasheet archive tesla datasheets oc70 oc71 oc72 oc75 oc76 oc77 oc169 oc170 101nu70 102nu70 103nu70 104nu70.
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