Oc72 transistor datasheet bookshelf

Uk vintage radio repair and restoration transistor. Description more info in stock package package qty. Cases gec mazda stc aei hivac newmarket texas transistors. Ammeter e flows current on receipt of forward bias. A description of the sites history is available on the web 14. Man beano boost 2019 mullard oc72 transistor youtube. S72 smd databook electronic circuits, tv schematics, audio. Oc71 datasheet, equivalent, cross reference search. There is the olsons store run by nellies dad, but they do not have the coils. A wide variety of ac127 transistor options are available to you, there are 9 suppliers who sells ac127 transistor on, mainly located in asia. Im trying to update as much information as possible, even if i can not find perfect information. Oc205 pnp silicon transistor in a classic so2 case aluminium cover over standard mullard glass test tubeawaiting datasheet status.

Tube oc 71 or rohre oc71 id33679, transistor, wires and audio frequency. Then, in 1956, apparently in an effort to give their transistor line better adaptability in the u. Nos new old stock unmarked manufacturetested components. Mullard then developed a unique glass encapsulation, and in 1954 issued three new alloyjunction audiofrequency transistors, the oc70, oc71 and oc72. Marking of electronic components, smd codes k7, k7, k70. Tube oc 71 or rohre oc71 id33679, transistor, wires and audio frequency shown. Transistor base numbers jxxxx to zxxxx cricklewood. For the pointcontact transistor a small slab of ntype germanium consisting of a single crystal and having a volume resistivity of 5. Tube oc 72 or rohre oc72 id33685, transistor, wires and poweroutput shown. Sola sound, hudson, mjm, lumpys tone shop, smitty, etc. Transistor museum early germanium power transistor history by. Applies to shipments to germany with our standard courier service dhl when paid via paypal, credit card or lastschrift. K72 smd databook electronic circuits, tv schematics, audio. The oc170 is an alloy diffused germanium pnp transistor it has a breakdown voltage of about 20 v and a maximum collector current of 10 ma.

Amperex registered their transistors with jetec and the 2oc72 became the 2n282, a matched pair of individual 2n281s, the oc72 equivalent. Lead 1 emitter, lead 2 base, lead 3 collector, lead 4 case electrically connected pnp switching transistor 2n4261. Ac8 datasheet, ac8 pdf, ac8 data sheet, ac8 manual, ac8 pdf, ac8, datenblatt, electronics ac8, alldatasheet, free, datasheet, datasheets, data sheet. S90h datasheet22 pages mcc npn silicon transistors. Transistors in the electronic parts department at parts. Buy online discounted oc series transistors from silicon. Audio medium power types oc72 oc81d oc81 can be replaced with an ac128, a relatively high voltage, high current device. Beta is typically 150, f t about 60 mhz the oc170 was developed by philips and introduced in the late 1950s.

Low power af amplifier transistors like the oc71 can be replaced with the economically priced ac125. It is in the stud package used for the commercial oc16, the first mullard power transistor, which suggests that it dates from about 1956. Uk vintage radio repair and restoration transistor faults. This data sheet and its contents the information belong to the members of the premier farnell group of companies the group or are licensed to it. 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 active elements terminals are electrically insulated from the case terminals 1, 2, and 3 are insulated from the case. It is a blog created to share various information with you in more complete and detailed contents. Oc45 transistors 30 in stock to buy, photo, pdf datasheet. Collector c the terminal of the transistor which receives the emitted electrons or holes. 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 from errors or omission. Interessierte konnen einen kleinen bericht uber dieses gerat hier als pdf datei.

Sep 11, 2016 mkii tone benders are all one of a kind. Germanium transistors the following table lists the parameters for germanium transistors. Diodes incorporated 2n7002w nchannel enhancement mode field effect transistor features low onresistance low gate threshold voltage low input capacitance fast switching speed low inputoutput leakage ultrasmall surface mount package also available in lead free version. I want to share this experience and information with each other to create a blog that helps each other. Oc45 pnp germanium transistor in a classic so2 glass test tube.

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. An internal reset circuit generates a reset pulse when the output 1 decrease below the regulated value. Oc72 datasheet, equivalent, cross reference search. Marking of electronic components, smd codes k7, k7. Npn generalpurpose transistors in a small sot23 toab surfacemounted device datashee plastic. Electrons are emitted in npn transistors whereas pnp transistors emit holes. Oc169 original germanium transistor new old stock oc169 germanium pnp alloy diffused junction transistor for use as an if amplifier in fm receivers. Any orders placed through this store will not be honored or fulfilled. When testing a transistor with a screen lead such as the af117 series, check the resistance between the screen and each of the other leads. 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 heater is a pnp power transistor in a large to218 tab package. Max2680 o high input thirdorder intercept point o oc72 germanium pnp transistor in a classic so2 case aluminium cover over standard mullard glass test tubenote. But the reliability and failure modes of vintage transistors is interesting, and is the subject of this article.

Datasheet archive tesla datasheets oc70 oc71 oc72 oc75 oc76 oc77 oc169 oc170 101nu70 102nu70 103nu70 104nu70 105nu70 106nu70 107nu70 101nu71 102nu71 103nu71 104nu71 152nu70 153nu70 154nu70 155nu70 156nu70 p pa. It has a breakdown voltage of about 20 v and a maximum collector current of 10 ma. One of my interests is restoring vintage transistor radios. Philips described its pointcontact transistors in general terms as follows. Ac122 datasheet germanium small signal transistors. Transistors made of germanium a semimetallic element produce a warm, rich, and extremely dynamic sound. Oc76 datasheet, equivalent, cross reference search. Transistor museum early germanium power transistor history. The 2n282 came standard with the copper cooling fin. The case drawings are shown at the bottom of the page. Transistor, npn, to18 bc109 transistor, npn, to18 bc109b transistor, npn, to18 bc109c important notice.

The image shows the oc71 glass case, painted black, with below it the oc72. The 2n2857 lowpower npn transistor uses the to72 package as. One of the larger surfaces of this germanium slab is soldered on to a metal carrier and thus forms the base. The only npn transistors you are likely to encounter are in transformerless output stages. Bc517 npn darlington transistor book, halfpage m3d186. The column marked case is the outline of the transistor case. Marking of electronic components, smd codes s7, s72, s72. Vintage mullard semiconductors andrew wylies watercolours pages. The oc170 is an alloy diffused germanium pnp transistor.

Max2680 o high input thirdorder intercept point o germanium transistor transistor germanium pnp 32v 0. 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. Surface mount transistor smd transistor code, types, function. The only information that i have unearthed is that the 1963 cv register of electronic valves mentions two gpo types, cxt1 and cxt2. The oc170 was developed by philips and introduced in the late 1950s. Marking of electronic components, smd codes s7, s72, s72, s780. This is information on a product in full production. Pnp germanium junction transistor intended as low power amplifier switch in af applications.

Datasheet archive tesla datasheets oc70 oc71 oc72 oc75 oc76 oc77 oc169 oc170 101nu70. Bookshelf bedeutung im cambridge englisch worterbuch. When the transistor was announced by bell labs in 1948, two uk companies were. Npn, silicon, switching, lowpower type 2n706 this amendment forms a part of military specification mlls19500120c. There are three terminals of a surface mount transistor or thruhole transistor.