Af126 germanium pnp transistor in a four lead to724 can by telefunken. Complement to 2sd3 absolute maximum ratings ta25cccc characteristic symbol rating unit collectorbase voltage collectoremitter voltage emitterbase voltage collector current dc collector dissipation tc25c junction temperature storage temperature vcbo. Nte electronics nte128 npn silicon complementary transistor. Others, discontinued transistor data book 1975, scan, pdf.
Oc45 datasheet, equivalent, cross reference search. Oc45 pnp germanium transistor in a classic so2 glass test tube. I have no original tungsram data books or sheets describing any of these. Transistor faults, testing and replacement it is a common belief that valves are unreliable and that transistors last forever. The links at left may help you to research your own replacement transistors. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34.
Drift transistor definition and meaning collins english. Philips described its pointcontact transistors in general terms as follows. Oc26 transistor oc26 transistor t05 2n301 npn 10 a 50 v to3 germanium t01. Of course you need the datasheet of the transistor to design a circuit using it. Oc26 transistor oc26 transistor t05 2n301 npn 10 a 50 v to3 germanium t01 transistor auy22 oc28 oc36 transistor text.
Oc35 datasheet, equivalent, cross reference search. In fact valves are nowhere near as unreliable as people think repairers would often claim a valve had failed and charge for it to cover the cost of the time spent finding and replacing a couple of faulty capacitors. Valve tube and transistor with informationprojects and technical help. Original transistor type original alternative type modern substitute alternative substitute.
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. The case drawings are shown at the bottom of the page. Transistor and diode data book, 1236 pages, 1973, texas instruments. Datasheet catalog for electronic components integrated circuit, transistor, diode, triac, and other semiconductors page 30. 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. For the pointcontact transistor a small slab of ntype germanium consisting of a single crystal and having a volume resistivity of 5. 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. Uk vintage radio repair and restoration transistor faults. Any orders placed through this store will not be honored or fulfilled. Description npn silicon transistoraf amplifier and low speed switching. Ac122 datasheet germanium small signal transistors.
The 2n3904 is a common npn bipolar junction transistor used for general purpose lowpower. Semiconductor bussiness headquaters tokyo office tokyo bldg. Datasheet catalog for electronic components integrated. Oc170 transistors 10 in stock to buy, photo, pdf datasheet. Oc71 datasheet, cross reference, circuit and application notes in pdf format. Nte electronics nte128 npn silicon complementary transistor for audio output, video, driver, to39 case, 1a continuous collector current, 140v collectorbase voltage price.
One of my interests is restoring vintage transistor radios. The gain of the 2sc2235o will be in the range from 80 to 160, 2sc2235y ranges from 120 to 240. For the radio constructor we have an archive of vintage circuits schematics to build. We do guarantee reasonable noise floor and bias to the geo spec.
Tip36a, tip36b, tip36c pnp complementary silicon highpower transistors designed for general. Also made by philips and related manufacturing plants. C2073 datasheet vceo 150v, npn power transistor mospec, 2sc2073 datasheet, c2073 pdf, c2073 pinout, c2073 data, c2073 crcuit, output, c2073 schematic. 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. C2073 datasheet vceo 150v, npn power transistor mospec. Should you find any info that can fill in any of the blanks in the matrix below. Some pages missing but still a useful source of info. C2785 datasheet, c2785 pdf, c2785 data sheet, datasheet, data sheet, pdf.
Germanium transistors the following table lists the parameters for germanium transistors. Buy online discounted oc series transistors from silicon. Oc205 pnp silicon transistor in a classic so2 case aluminium cover over standard mullard glass test tubeawaiting datasheet status. The 2n3906 is a commonly used pnp bipolar junction transistor intended for general purpose.
Features 25 a collector current low leakage current. In practice, the af125 can be used to replace af114115116. Bipolar, power, rf, digital, igbt, unijunction, fet, jfet, and mosfets. C380 datasheet, c380 pdf, c380 data sheet, datasheet, data sheet, pdf. The prototype version on the left in the image handles 24 watts. The datasheet states the maximum allowed output current and your design should limit its. I get datasheets from your circuit design determines the output current. One of the larger surfaces of this germanium slab is soldered on to a metal carrier and thus forms the base.
The mullard data handbook system is made up of three sets of books, each. Featured items newest items bestselling alphabetical. High voltage 75v video amplifier for transistor tvs. Philipsmullard produced the first commercial highpower transistor in europe, the oc16, in about 1956. Jul 05, 2017 c2073 datasheet vceo 150v, npn power transistor mospec, 2sc2073 datasheet, c2073 pdf, c2073 pinout, c2073 data, c2073 crcuit, output, c2073 schematic. The datasheet states the maximum allowed output current and your design should limit its output current to less. Max2680 o high input thirdorder intercept point o datasheetpdf 3 page nec. One may cite them here as early germanium high frequency transistors, designed for frequency modulation receivers. Oc45 transistors 30 in stock to buy, photo, pdf datasheet. These models are very fragile, sensible to static electricity, and therefore to avoid. 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. 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 box will do the job.
With out knowing what and ware your are using it, you should choose a similar part. Tip35c, tip35c datasheet, tip35c npn power transistor datasheet, buy tip35c transistor. Vishay, disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any o ther disclosure relating to any product. Tube oc 35 or rohre oc35 id34286, transistor, special tubebase in general and universal shown. This book also has a very comprehensive glossary, index, and equations. Uk vintage radio repair and restoration transistor. Tungsram made germanium transistors in the philipsmullard oc series, but for most. The 2sc2235 transistor might have a current gain anywhere between 80 and 240. May be one of several makes, and may be to5 can or glass bulb depending on available stock. Transistor equivalents for the substitution of modern transistors in elderly projects. Cases gec mazda stc aei hivac newmarket texas transistors.
Miniature glass passivated junction plastic rectifier. Buy online discounted oc series transistors from siliconark. Is there anything available to see if a particular transistor can be replaced with a different one. Sometimes the 2s prefix is not marked on the package the 2sc2235 transistor might be marked c2235. Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or. 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. Pnp germanium alloy transistor intended as preamplifier in af applications. The pointcontact transistors have 2 mil point spacing and are close copies of the btl type a. 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. Tube oc 45 or rohre oc45 id33673, transistor, wires and rfifstage shown. Smallsignal transistor data book, 86 pages, 1984, motorola. Transistor equivalents for the substitution of modern.
But the reliability and failure modes of vintage transistors is interesting, and is the subject of this article. The column marked case is the outline of the transistor case. Max2680 o high input thirdorder intercept point o datasheet html 1 page micro electronics. Transistor the rangemaster npn oc140 small bear electronics. 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. This book provides practical guidance and application information when using transistors in electronic and electrical circuit design. A site for the novice or established collectorrestorer of vintage radio sets and electronics. This easytouse book covers all transistor types including.
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