Oc71 transistor datasheet booklet

Click the button below to add the transistor the rangemaster mullard oc75 to your wish list. I find myself testing a lot of transistors to determine their pin layout and type and as such find that building the test circuit on a b. Oc71 oc7x germanium small signal transistors components datasheet pdf data sheet free from datasheet data sheet search for. Mpsa70 amplifier transistor pnp silicon features pb. The design of this piece gives the pedal a boost that is far less transistory in. Ac128 germanium transistors transistorsics lowleakage pnp germaniums perfect for all your fuzzy desires. Back to my nonus germanium transistor production page back to my technology page this page is about vintage semiconductor devices made by texas instruments ti, a us company, but the series described below were produced only in the uk.

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. The other handbooks cover capacitors, resistors, inductors, and diodes. Bc372, bc373 high voltage darlington transistors npn silicon features pb. Oc76 germanium transistor pnp 90110 hfe build your. The effects box was made famous by none other than eric clapton and a host of others even queens early sound was attributed here.

This easytouse book covers all transistor types including. Uk vintage radio repair and restoration bush transistor sets. Bc546b, bc547a, b, c, bc548b, c amplifier transistors arduino. Philips rebranded its oc71 and oc72 as oc and oc14 and announced these. This book also has a very comprehensive glossary, index, and equations. The prototype version on the left in the image handles 24 watts. The image shows the oc71 glass case, painted black, with below it the oc72. Enter your mobile number or email address below and we. Germanium transistor for sale in uk view 28 bargains. Oc170 transistors 10 in stock to buy, photo, pdf datasheet. Oc71 datasheet, oc71 pdf, oc71 data sheet, oc71 manual, oc71 pdf, oc71, datenblatt, electronics oc71, alldatasheet, free, datasheet, datasheets, data sheet, datas. Amperex oc71 2n280 cv7005 nkt275 red dot germanium transistor.

Free packages are available maximum ratings rating symbol value unit collector. Edward herold, director of the radio tube laboratory at the rca princeton laboratories, visited natlab and the electron tubes division laboratory in 1953 and noted in his report. Transistor semiconductor history texas instruments rca bell laboratories. Emitter voltage bc372 bc373 vceo 100 80 vdc collector. Any orders placed through this store will not be honored or fulfilled. Thus the present article will be concerned primarily with the oc44 and oc45 r.

Cases gec mazda stc aei hivac newmarket texas transistors. One of my interests is restoring vintage transistor radios. Tube oc 75 or rohre oc75 id33808, transistor, wires and audio frequency shown. Oc44 datasheet, oc44 pdf, oc44 data sheet, oc44 manual, oc44 pdf, oc44, datenblatt, electronics oc44, alldatasheet, free, datasheet, datasheets, data sheet, datas. With the right biased voltage at the base, the transistor can be operated like a mechanical switch. High voltage 75v video amplifier for transistor tvs. Uk vintage radio repair and restoration transistor faults. Oc71 datasheet, equivalent, cross reference search.

I wont be going into any great detail as to how transistors are made or exactly how. Featured items newest items bestselling alphabetical. Description, oc7x germanium small signal transistors. In practice, the af125 can be used to replace af114115116. Full text of electronics australia magazine 1973 see other formats.

Cbspower transistor manual for the 2n155, 2n156 and 2n158 1957. 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. Transistor the rangemaster mullard oc75 small bear. The case drawings are shown at the bottom of the page. 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. Datasheet archive tesla datasheets oc70 oc71 oc72 oc75 oc76 oc77 oc169 oc170 101nu70. Oc71 germanium transistor buy, price, stock, siliconark. A description of the sites history is available on the web 14. Transistors made of germanium a semimetallic element produce a warm, rich, and extremely dynamic sound. 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 purpose of this circuit is to test npn and pnp transistors and to identify their pin layouts, ie ecb, ebc. This version of the oc44 is the preferred glass version. This auction is for a mixed bundle of salvaged germanium transistorsthese are all removed from old radios or oscilloscopes. Applies to shipments to germany with our standard courier service dhl when paid via paypal, credit card or lastschrift.

To cover the production of a range of transistors it is necessary, of course, to concentrate on those processes which are common to. The commercial version to its right used a different stud packaging in which two leads emerged through a hole in the centre of the fixing screw. 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. The pointcontact transistors have 2 mil point spacing and are close copies of the btl type a. Uk vintage radio repair and restoration transistor. Mullard oc series with the oc71 being aimed at audio applications. Tube oc 71 or rohre oc71 id33679, transistor, wires and audio frequency shown. The column marked case is the outline of the transistor case. Pdf oc169 350iu oc171 oc171 oc44 oc169 oc45 transistor oc44 2s60a the transistor manual 2sa ge transistor manual. Toshiba transistor silicon pnp epitaxial type pct process 2sc1959 audio frequency low power amplifier applications driver stage amplifier applications switching applications excellent hfe linearity. The following diagram and paragraph are taken from the book electronic classics. Germanium transistors the following table lists the parameters for germanium transistors. If talking about the rangemaster, one has to mention the vintage oc44, a germanium pnp transistor, and the key device to retaining this excellent tone with boost. However they have the same part numbers as ones made by ti in the us and i am unaware of any way to distinguish them.

Oc76 germanium transistor pnp 90110 hfe build your own clone. Transistors af117, af117, af117, oc71, oc81d, oc81, oc81 date 1963. Oc71 to1 p ge 10 30 10 50 3075 5 6 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. This seems to affect many audio transistors including oc71, oc78, oc81. Mullard red spot oc71 germanium pnp alloy junction transistors from 1960s radio kits. This seems to affect many audio transistors including oc71, oc78, oc81, ac127, ac128, ac176, ac187 and ac188. When the transistor was announced by bell labs in 1948, two uk companies were. Philipsmullard produced the first commercial highpower transistor in europe, the oc16, in about 1956. The transistor handbook, one in a series of component handbooks, has the answers to all of your daily application questions.

The apidictor was designed in the early 1950s and contained three types of transistor. Nte electronics 2n404 germanium pnp transistor for. Pinning pin description 1 emitter 2 base 3 collector, connected to case fig. Bipolar, power, rf, digital, igbt, unijunction, fet, jfet, and mosfets. Electronics handbookcircuitsnpn transistor configurations. Liven up your fuzz face, pimp your fuzz factory, wrangle your rangemaster. It seems stock of these is rapidly dwindling worldwide. Amperex oc71 2n280 cv7005 nkt275 red dot germanium transistor quantity. Ac122 datasheet germanium small signal transistors. Oc72 datasheet, equivalent, cross reference search. But the reliability and failure modes of vintage transistors is interesting, and is the subject of this article. Vintage mullard semiconductors andrew wylies watercolours pages. Transistor equivalents for the substitution of modern. Toshiba transistor silicon pnp epitaxial type pct process.