Oc71 transistor datasheet book

Should you find any info that can fill in any of the blanks in the matrix below. For the pointcontact transistor a small slab of ntype germanium consisting of a single crystal and having a volume resistivity of 5. Uk vintage radio repair and restoration transistor. Click the button below to add the transistor the rangemaster mullard oc76 to your wish list. High power npn silicon transistor stmicroelectronics preferred salestypes description the 2n3771, 2n3772 are silicon epitaxialbase npn transistors mounted in jedec jedec to3 metal case. The purpose of this book is to help the reader to understand how transistors work and how to design a simple transistor circuit. This seems to affect many audio transistors including oc71, oc78, oc81, ac127, ac128, ac176, ac187 and ac188. Any orders placed through this store will not be honored or fulfilled. Toshiba power transistor semiconductor data book 1983 toshiba corporation 1983 acrobat 7 pdf 52. Bjt transistors assortment kit set of 210 pnp and npn assorted transistors with 250 assorted resistors bipolar transistor pack with 2n3904 2n3906. 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. Sc105aa sc89 emt3 umt3f lfeatures 1 builtin biasing resistors, r1 r2 10k. If not, it can usually be obtained from transistor data books.

Some familiar but early silicon transistors are unavailable, and with the continuing encroachment of cheap, disposable and as many would describe it, nasty surface mounted technology, leaded transistors in general seem to be under threat. Phototransistors are a form of transistor that is sensitive to light having the gain of. But the reliability and failure modes of vintage transistors is interesting, and is the subject of this article. Oc71 datasheet, equivalent, cross reference search. Consider the contents of this book as the first mile of a long journey into transistor. Toshiba power transistor semiconductor data book 1983. Npn 100ma 50v digital transistor bias resistor builtin transistor datasheet loutline parameter value sot723 sot416fl vcc 50v icmax. Com is the biggest online electronic component datasheets search engine. Full text of mullard data book 196566 internet archive. One of the larger surfaces of this germanium slab is soldered on to a metal carrier and thus forms the base. Download ic database equivalent guide 100 thousand. Jun 09, 2016 the operating characteristics of a transistor are all found on its data sheet. Valve tube and transistor with informationprojects and technical help. It is addressed to amateur circuit designer with little or no previous knowledge on semiconductors.

Vintage mullard semiconductors andrew wylies watercolours pages. They are intended for linear amplifiers and inductive switching applications. Consider the contents of this book as the first mile of a long journey into transistor circuits. The data book has been prepared by central technical services, mullard ltd. Ic software database dated 2003 with database information from more than 100,000 semiconductors such as transistors and integrated circuits. General electric also devoted its share of 2n107 publishing by listing transistor applications in their transistor data books. This wonderful book is to introduce a novice beginner into the world of radio engineering and begins from simple steps. A vintage ocp71 phototransistor this was an oc71 transistor with opaque. Germanium transistors the following table lists the parameters for germanium transistors. Others, shortform electronic component datasheets, scan, pdf. Download ic database equivalent guide 100 thousand components.

Transistor the rangemaster mullard oc76 small bear. Semiconductortransistor crossreference list peavey. H robinson, and published by wills and hepworth ltd. It describes the principals of the junction transistor, especial the oc70, oc71 both for high frequencies and the oc72 for audio reproduction. I found a good treatment of transistor data on the dutch wikipedia. 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. This seems to affect many audio transistors including oc71, oc78, oc81, ac127, ac128, ac176. Not even silicon devices are safe from the dead hand of obsolescence. As hostilities started to draw to a close, bell laboratories realised that there were major possibilities for semiconductor technology. Looking to replace hard to get germanium transistors with.

The column marked case is the outline of the transistor case. This is the document that the manufacturer provides telling you. Amperex oc71 cv7005 2n280 germanium transistors for dallas rangemaster fuzz face and other fuzz guitar pedals. Used in some historical three transistors fuzzboxes like the marshall supa fuzz and some 2 transistors tone benders. Philips described its pointcontact transistors in general terms as follows. The 2n107 is an early germanium alloy junction pnp transistor developed by general electric. Oc71 oc7x germanium small signal transistors components datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and other electronic components such as resistors, capacitors, transistors and diodes.

Mullard data book, 19734, mister transistor and other websites see references. Acy20 germanium pnp transistor in a to5 can by newmarket transistors ltd nkt. For the radio constructor we have an archive of vintage circuits schematics to build. Philips rebranded its oc71 and oc72 as oc and oc14 and announced these as. Transistor equivalents for the substitution of modern. How to read a datash eet prepared for the wims outreach program 5602, d. Datasheet archive tesla datasheets oc70 oc71 oc72 oc75 oc76 oc77 oc169 oc170 101nu70 102nu70 103nu70 104nu70 105nu70 106nu70. Transistor semiconductor history texas instruments rca bell laboratories western. The case drawings are shown at the bottom of the page.

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. Allied radio, which sold both transistors through their catalog, sold a project book called. Transistor equivalents for the substitution of modern transistors in elderly projects. 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. When the transistor was announced by bell labs in 1948, two uk companies were.

Cases gec mazda stc aei hivac newmarket texas transistors. Datasheet archive tesla datasheets oc70 oc71 oc72 oc75. Tube oc 71 or rohre oc71 id33679, transistor, wires and audio frequency shown. The problem is not as universal as with the af117 series however, and replacement with a similar transistor from a scrap set will often be a permanent solution. The operating characteristics of a transistor are all found on its data sheet. Oc71 transistors 36 in stock to buy, photo, pdf datasheet. 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.

Data for the early power transistors is shown in the following table. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. The links at left may help you to research your own replacement transistors. Oc71 datasheet, oc71 pdf, oc71 data sheet, oc71 manual, oc71 pdf, oc71, datenblatt, electronics oc71, alldatasheet, free, datasheet, datasheets, data sheet, datas. Grover in order to use a pic microcontroller, a flipflop, a photodetector, or practically any electronic device, you need to consult a datasheet. The image shows the oc71 glass case, painted black, with below it the oc72. To5 can with 40mm long leads download acy19 short datasheet. Making a transistor radio is a book written by george c. The ones of interest are t3, t4, t5 and t6, thats oc71, ac128, ac176 and.

This article is part of wikiproject electronics, an attempt to provide a standard approach to writing articles about electronics on wikipedia. Data on many transistors is available on my valve data cdrom. Dtc114y series npn 100ma 50v digital transistor bias resistor builtin transistor datasheet loutline parameter value sot723 sot416fl vcc 50v icmax. Free packages are available maximum ratings rating symbol value unit collector. I have these old hacker radios that use hard to locate decent germanium transistors in the audio amplifiers and so i was wondering if it would be possible to replace with their silicon equivalents. Limiting values 1 device mounted on an fr4 pcb, singlesided copper, tinplated and standard footprint.

If you would like to participate, you can choose to edit the article attached to this page, or visit the project page, where you can join the project and see a list of open tasks. Silicon npn transistors stmicroelectronics preferred salestypes npn transistor description the 2n3439 and 2n3440 are silicon epitaxial planar npn transistors in jedec to39 metal case designed for use in consumer and industrial lineoperated applications. Oc71 datasheet, cross reference, circuit and application notes in pdf format. Sn76477 2n4401 free transistor equivalent book semiconductor. Rangemaster treble booster clone, freaking awesome. Glass technology had been selected because at that time plastics were still unable to ensure a perfect seal between case and terminals. Making a transistor radio parts list of course, if you had a time machine, you could visit the peter vis hardware mercantile store, and i will pack all of these items for you in a nice brown paper bag. Uk vintage radio repair and restoration transistor faults.

Mullard then developed a unique glass encapsulation, and in 1954 issued three new alloyjunction audiofrequency transistors, the oc70, oc71 and oc72. A site for the novice or established collectorrestorer of vintage radio sets and electronics. This is the document that the manufacturer provides telling you the typical device performance. This diagram shows the lead connections for the mullard transistors most often encountered in british transistor radios made in the 1960s viewed from underneath. Others, discontinued transistor data book 1975, scan, pdf. Need to know if the part can handle the frequency or give you the gain you need, look at the data sheet. Oc71 newmarket transistors ltd nkt product portfolio 197273. Diodes and transistors pdf 28p this note covers the following topics. Transistor diode capacitor displays connectors sensor if you cant search it here, nowhere else in the world. Dta114e series pnp 100ma 50v digital transistors bias resistor builtin transistors datasheet loutline parameter value vmt3 emt3f vcc50v icmax.