Download transistor cross reference equivalent book pdf pdf. Although largely superseded by its equivalent op amp or timer ic versions in many. Pnp germanium alloy transistor intended as oscillator and mixer in am broadcast receivers. Detailed asi datasheets, specifications and package outline drawings are available as well. When the device is used as an emitter follower with a low source. Users can get a list of the best oc45 equivalent transistors, download the official datasheets in pdf, pin diagram, and pnp pinout circuit. One of my interests is restoring vintage transistor radios. Oc45 datasheet, cross reference, circuit and application notes in pdf format. The ac128 sounds different but good in its own right. In reality these two devices would be more accurately termed if transistors. In the content you can find all kind of electronic components specification and ic schematic too. The data sheet is very important for every engineers and technicians because it can help them to find the nearest replacement for the components that they are. In practice, the af125 can be used to replace af114115116.
It is the most common measure of ic complexity although the majority of transistors in modern microprocessors are contained in the. Text in other languages may differ dimensions whd incl. Understanding transistor cross reference, equivalent. Bipolar power transistor selection guide january 2003 table of contents product page general purpose transistors horizontal deflection output transistors product page dpak d2pak sot223 ipak to126 todarlington transistors dpak ipak to126 to220 to220f to3p to3pf switching transistors dpak d2pak to92 to126 to220 to220f to3p to3pf 2. Dec 18, 2009 there, the timing resistors are connected to the transistors collectors so that only one transistor can conduct at a time, ensuring that oscillation will always begin. Discounted oc series transistors prices, stock, datasheets. Lp395 ultra reliable power transistor datasheet texas instruments. The basic bipolar transistor bjt version of an astable multivibrator as shown in fig. The transistor count is the number of transistors in an electronic device. Power transistor crossreference list for motorola, philips and sgsthomson components. It is one of the must have semiconductor guide for those who love electronic troubleshooting.
Obsolete transistor equivalents all about circuits. Transistor crossreference guide, listing about 5000 models of transistors by main european and american manufacturers of the time, with asiatic equivalents, if any. Oc42 1 oc41 1 oc202 1 oc203 1 oc123 1 oc71 2 oc72 1 oc200 2 oc82d 1 oc78 2 oc78d 1 oc45. Oc445 datasheet, equivalent, cross reference search. Diagram d shows the transistor connected to the power rails.
A good ac128 may sound much better than a bad oc44. The 2sc458 transistor might have a current gain anywhere between 100 and 500. After this has been done, small signals which are applied to the input of a transistor circuit will be amplified with reasonable linearity. Oc45 datasheet, transistor equivalent, pinout and inverter circuit. Oc44 datasheet, equivalent, cross reference search. Zetex ztx653 silicon planar medium power transistor datasheet. Dodgy ebay replacements are available but im aware that this is not necessarily the best route to go down. I highly recommend the geofex article on the rangemaster. Oc45 transistors 30 in stock to buy, photo, pdf datasheet, rfq. Ac128 datasheet, equivalent, cross reference search. A transistor outline number, or to, refers to a transistors physical size, shape, and mounting style. Keep in mind that germanium transistors vary a good deal. Oc42 1 oc41 1 oc202 1 oc203 1 oc123 1 oc71 2 oc72 1 oc200 2 oc82d 1 oc78 2 oc78d 1 oc45 1 oc25 1 oc602y 1 oc602or. We list numerous commercial part numbers and their asi exact replacement or suggest a similar device.
Ap239 transistor 809 8c547 2n50b in2222a 6c1c radio ac176 ac126 sft353 2n2064 text. This need was provided for in my first book of transistor equivalents and substitutes published in 1971 and reprinted at least 10 times since that date with more than one million copies having been sold. You can replace the 2sc458 with the 2n3708, 2sc1815. 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. This version of the oc44 is the preferred glass version. 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. The molecule bridges the source and drain contact providing a channel for electrons to flow. This is where you will find all the transistors specifically in the oc series i. High voltage 75v video amplifier for transistor tvs. Choosing transistor replacements electronics notes. Introduction so far in ee100 you have seen analog circuits. Waveforms of a rectangular rather than square shape can also be considered square waves.
Intense midrange grained texture make it perfect for fuzz, but not so easy to implement often leaky, not easy to bias, but can sound great. Mj15022 silicon power transistors on semiconductor. All electronic repairers should know how to read the transistor cross reference equivalent book if they want to succeed in electronic repairs. The transistor outline doesnt usually tell you which of the three transistor leads connects to its base terminal b, its emitter terminal e, or its collector terminal c. Digital transistor tester, digital transistor dc parameter tester. Oc71 transistor replacement the galway association of new york. Good question, oc45 was 15v, 12ma with an ft of 4mhz wow. The effects box was made famous by none other than eric clapton and a host of others even queens early sound was attributed here. Also in 1956, mullard announced the oc44 and oc45 transistors, the latter seems to be described all over the web as the first rf transistor, although i think this only applies to europe. Diagram c shows the equivalent of a transistor as a water valve. Oc44 transistor pnp oc45 transistor pnp oc71 transistor pnp. Some magazines use the term tup for transistor universal pnp or tun for transistor universal npn. The secret to making these pedals sound good is biasing the transistor.
The following table lists the parameters for germanium transistors. The architecture of a molecular field effect transistor is shown in fig. Uk august 2020 we are open again and sending out orders all items listed are our own stock and all photographs are our own. Hi, im currently repairing an amp with 2sb688a and 2sc5179 npn pnp complementary pair output transistors. It is one of the semiconductor guidelines that must have for those who like to solve electronic problems. The movement of an electron to the left is equivalent to a hole moving to the right. We will conclude this chapter by looking at how transistors can be used as logic devices. This contact is known as the gate, as it is intended to control the flow of charge through the channel. Transistors most of the transistors used in our circuits are bc 547 and bc 557.
The famous transistor crossreference book is a replacement guide to philip ecgs master master of. Please try again cross reference receive an item you in the item that email. C operating conditions by using a graphical method as shown in the last chapter. Where the time of the mark is much shorter than that of the space however, the waveform is more properly called a series of pulses or a pulse train as shown in fig. Transistor datasheetpdf central semiconductor corp.
The best equivalent transistors are the af12x series that are the same piece of germanium. As more current water enters the base, more water flows from the collector to the emitter. These are classified as universal or common npn and pnp types with a voltage rating of about 25v, 100ma collector current and a gain of about 100. The design of this piece gives the pedal a boost that is far less transistory in nature, souding more round and tube. Rare and ancient equipment dumont audio dumont seven transistor. All the astable multivibrator circuits shown so far are intended to produce symmetrical output waveforms, with a 1 to 1 ratio of square wave to space 1. It typically refers to the number of mosfets metaloxidesemiconductor fieldeffect transistors, or mos transistors on an integrated circuit ic chip, as all modern ics use mosfets. Next we will talk about diodes, followed by the bipolar junction transistor.
Tube oc 45 or rohre oc45 id33673, transistor, wires and rfifstage shown. Small signal transistors and diodes marking codes bzv49c51 51y sc62sot89 bzv49c56 56y sc62sot89 bzv49c62 62y sc62sot89 bzv49c68 68y sc62sot89 bzv49c75 75y sc62sot89 bzv55b2v4 yellow sod80c bzv55b2v7 yellow sod80c bzv55b3v0 yellow sod80c bzv55b3v3 yellow sod80c bzv55b3v6 yellow sod80c bzv55b3v9 yellow sod80c bzv55b4v3. Transistor basics emitter to base junction is forward biased normally collector to base junction is reverse biased normally transistors are current operated devices, so kcl should be applied first. Transistor cross reference replacement guide if more than the maximum voltage rating is used for transistors, it can be permanently damaged. When the transistor was announced by bell labs in 1948. In content, you can find all kinds of electronic component specifications and ic schema as well. Oc45 datasheet, equivalent, cross reference search. Used in some historical three transistors fuzzboxes like the marshall supa fuzz and some 2 transistors tone benders. In the case of both devices, we will talk about the nonlinear models, load line analysis and applications. Tip41c transistor pinout, equivalent, specs, datasheet. Bipolar power transistor selection guide january 2003 table of contents product page general purpose transistors horizontal deflection output.
Remember that germanium transistors used fairly primitive alloying techniques. The 2sa1029 is a complementary pnp transistor for the 2sc458. There is also a third terminal positioned close to the conductor. At maximum voltage, also called fractional voltage bv, electrons begin to avalanche in transistors. The gain of the 2sc458b will be in the range from 100 to 200, 2sc458c ranges from 160 to 320, 2sc458d ranges from 250 to 500. The transistors used in are oc45 and oc71s ive got hold of the 71s, but am.
Elenca circa 5000 tipi di transistori dei principali produttori europei e americani dellepoca, con lindicazione degli eventuali equivalenti asiatici. At least 36,000 new types of transistors have been intro. General purpose transistors technical data and comparison tables. Antisaturation transistors dpak ipak to126 to220 packages surface mount dpak, d2pak throughhole to92, ipak, to126, to220 throughhole to220f, to3p, to3pf, to264. Necessary cookies to all transistor cross reference opting out our wide range of our wide range of the app to. It is important to point out here that mobility that is, the ease with which charge. Sometimes the 2s prefix is not marked on the package the 2sc458 transistor might be marked c458. Diode crossreference guide continued 1n632 1n633 1n634 1n635 1n636 1n63a 1n64 1n64a 1n65 1n66 1n664 1n665 1n666 1n667 1n668 1n669 1n66a 1n67 1n67a 1n68 1n68a 1n69. The humble transistor q1 emitter e collector c base b transistor basics emitter to base junction is forward biased normally collector to base junction is reverse biased normally transistors are current operated devices, so. Introduction is in italian, but most of the book is tables of data with headers in english. L1085dg l1117lg pc890 c3209 transistor transistor c3795 c3746 transistor adp3418k transistor r3907 transistor c3789. Nte semiconductors cross reference guide all transistors datasheet.
The first step in designing a transistor amplifier stage is to establish the d. Download transistor cross reference equivalent book pdf doc. Semiconductortransistor crossreference list peavey. Transistor crossreference guide, supplemento alla rivista selezione di tecnica radio tv hifi elettronica n 4, 1980. This will lead naturally to our discussion of digital systems. Does anyone have any information on quality equivalents for these transistors. The importance of transistor cross reference, datasheet, equivalent and specification.
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