3904 transistor equivalent books

So say if the transistor has a gain of 50 not sure what the 3904 has, and i want 100ma. Apr 11, 2009 the maximum current a 3904 can handle is 100ma, so is it okay too choose a resistor for a 100ma current so anything i hook up will work as long as it takes less than 100ma. Buy international transistor equivalents guide bernard babani publishing radio and electronics books by adrian michaels isbn. The initial 2n identifies the part as a transistor and the rest of the code identifies the particular transistor. Dec 11, 2017 2n2222a is a npn transistor hence the collector and emitter will be left open reverse biased when the base pin is held at ground and will be closed forward biased when a signal is provided to base pin. If someone could tell me in simple terms what make the s9018 better for an amplifier oscillator i would appreciate it.

These are very common, high quality bjt npn transistors made by st micro. Therefore to use transistor as a switch we have to make transistor off which equivalent to the logical 0 and saturate which is equivalent to the logical 1. I am building up an electronic bench again after years and have been getting bulk parts like these. Design and application of transistor switching circuits. Free transistor circuits books download ebooks online.

A logical 0 is a voltage between 5v and 15v, and a logical 1 is a voltage between 5v and 15v. Its weird because in all my electronics books, the authors discribe the pins ebc with the flat side towards you. Choosing transistor replacements electronics notes. I want to use my course material to write a book in the future.

Mar 21, 2004 years ago there were books for transistor equivalents. I was poking around and found that there is a voltage drop of about. 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. If the transistor is a pnp, then the arrow points to the base of the transistor, otherwise it points to the output. The 2n3904 is common generalpurpose lowpower npn transistor used amplifying or switching applications. Most projects will specify a particular transistor, but if necessary you can usually substitute an equivalent transistor from the wide range available. First, the 3904 and 3906 jellybean trnsistors will work fine for this application. This pair of transistors will buffer the signal from q3s collector, and provide a high gain as the signal goes to the final stage. In this project, we will show how to build a buffer with a transistor. I like the quality, checked the hfe on most f the and all are similar between 200 and. Here is a link that shows various package sizes for 3904 transistors.

Mcigicm 200pcs 2n3904 npn transistor, 2n3904 bipolar bjt transistors. The front page of the on semiconductor 2n3904 datasheet. Recent listings manufacturer directory get instant insight into any electronic component. Transistors substitutionsequivalents all about circuits. The 2n3904 is a common npn bipolar junction transistor used for generalpurpose lowpower amplifying or switching applications. Connecting transistors in parallel is a process in which the identical pinouts of two or more transistors are connected together in a circuit in order to multiply the power handling capacity of the combined parallel transistor set. Is there any webbased or stand alone program to do such service for transistors and ics. Download ic database equivalent guide 100 thousand. The links at left may help you to research your own replacement transistors. Wherever you need to control the flow of electricity in a device from transistor radios, to diodes, to circuit boards you can find a great collection of. Since the 2n3904 is an npn transistor, that means the base needs positive biasing appropriate voltage levels and resistance to turn on the collector emitter junction for proper current flow. Should you find any info that can fill in any of the blanks in the matrix below.

One of the famous diagrams that show the transistor operating state is called the transistor static characteristic curve as shown on this following picture. It is designed for low current and power, medium voltage, and can operate at moderately high speeds. Smallsignal transistors replacement list bc337a bc337 equivalent type bc338 bc337 bc33816 bc33716 bc33825 bc33725 bc33840 bc33740 bc36816 bc63516 bc36825 bc63516 equivalent type bc547a bc546a bc548 bc547 bc548a bc546a bc548b bc547b bc548c bc547c bc549 bc547b bc549b bc547b bc550 bc547b bc550b bc547b bc557a bc556a. Transistor 2n3904 bipolar bjt npn general purpose pack of. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, base, and collector leads. The symbol of the transistor has an arrow on the emitter. Is there anything available to see if a particular transistor can be replaced with a different one. International transistor equivalents guide bernard babani. Most have a way to say i need a transistor like this. Hookup accessories for transistor npn, 60v 200ma 2n3904. Find the data sheets for the 2n3904 transistor and look up the three junction breakdown voltages collectoremitter, collectorbase, and emitterbase, the maximum collector current, and estimates for often listed as hfe and vbesat the base. Wherever you need to control the flow of electricity in a device from transistor radios, to diodes, to circuit boards you can find a great collection of transistors on ebay. Npn silicon transistor descriptions general small signal application switching application features low collector saturation voltage collector output capacitance complementary pair with 2n3906 ordering information type no. In this tutorial well introduce you to the basics of the most common transistor around.

It is necessary to ensure that the replacement transistor will be able to operate at the relevant frequencies, so a similar or slightly higher ft is advisable. But all this is some ones idea of what a equivalent is. Everyday low prices and free delivery on eligible orders. Transistor equivalents for the substitution of modern. Universally useful and adaptable, the transistor is an essential component of electronic circuitry. This section contains free e books and guides on transistor circuits, some of the resources in this section can be viewed online and some of them can be downloaded. These transistors help to form the input differential stage of the amplifier. Select a replacement transistor with equivalent ft. Ive been saving my used batteries in a box for recycle and now im taking it out and use the remaining voltage to light a 10mm led as my night light in my room,livingroom,kitchen,hallways and lights in the bathroom so my kids dont have to turn on the light at night when they do no. 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. The maximum rating for the 2n3904 is 625mw, so no surprise that the transistor gets hot fast. Free packages are available maximum ratings rating symbol value unit collector.

Find the data sheets for the 2n3904 transistor and look up the three junction breakdown voltages collectoremitter, collectorbase, and emitterbase, the maximum collector current, and estimates for often listed as hfe and vbesat the baseemitter saturation voltage, both at an ic of 10 ma. Free transistor circuits books download ebooks online textbooks. You are far better off understanding the specifications, particular those of particular interest to your application, and using a book or table of specs to find a proper substitute, or posting on sites like aac for help choosing. Pricing and availability on millions of electronic components from digikey electronics. Transistor equivalent circuits and models learning objectives general dc equivalent circuit ac equivalent circuit equivalent circuit of a cb amplifier effect of source resistance r s on voltage gain equivalent circuit of a ce amplifier equivalent circuit of a cc amplifier smallsignal lowfrequency model or representation. It is one of the lowestcost general purpose transistors currently available on the market, and compares well with the bc range of npn transistors. Apr 05, 2008 i during 80s and 90s, i used to search for components equivalents in books.

Here is an image showing the pin diagram of the this transistor. I like electronics, having 2n3904 and 2n3906 is a must have, you will never end the fun of making a new circuit. Discover book depositorys huge selection of transistors books online. Check our section of free e books and guides on transistor circuits now. It is typically used for lowcurrent, medium voltage, and moderate speed purposes. Nte electronics 2n3904 silicon npn transistor for general. Some equivalent transistors have the opposite pinout e,b,c and some are b,c,e. Although the software seems a bit ugly design running on dos, but it works perfectly with the database with many components and is free, makes an interesting tool to interested in electronics, want to know when information about a particular component or find a replacement the operation is quite simple and is separated by categories such as. The equivalent resistance of these resistors is roughly 500 so this the resistance that the capacitors sees at one pathway. You can always remember that the arrow points at the n material. Nov 30, 2015 i have looked across the data sheets but are still not certain what the advantage of a s9018 is over saya 2n2222 or the like. Pillaging the wealth of information in a datasheet hackaday.

Marking package code 2n3904 2n3904 to92 outline dimensions unit. The 2n3906 is a commonly used pnp bipolar junction transistor intended for general purpose lowpower amplifying or switching applications. Theyre critical as a control source in just about every modern circuit. The 2n3904 is a small signal generalpurpose npn transistor. I have looked across the data sheets but are still not certain what the advantage of a s9018 is over saya 2n2222 or the like. Transistor npn, 60v 200ma 2n3904 com00521 sparkfun. Connecting two or more transistors in parallel homemade. Diodes and transistors pdf 28p this note covers the following topics. It is designed for low electric current and power and medium voltage, and can operate at moderately high speeds. All the substitution books i have seen have been highly unreliable. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. I use these for my joule thief project that i found on youtube while searching how to save energy. Thanks to the e books on the forum i did some tests and found out that the pinout of my 2n3904 transistor is ecb. This wont be a problem so long as you are aware of the difference.

Transistor codes surface mount, pnp, npn, choosing. Discrete semiconductors data sheet book, halfpage m3d186 2n3904 npn switching transistor 1999 apr 23 product specification supersedes data. This transistor is also available in a throughthehole to92 bulk, and ammopack versions. Dont go for a transistor with a much higher ft as this may increase the risk of oscillation.

The 2n3904 is a common npn bipolar junction transistor used for generalpurpose lowpower. Discrete semiconductors data sheet book, halfpage m3d186 2n3904 npn switching transistor 1999 apr 23 product specification supersedes data of 1997 jul 15 philips semiconductors product specification npn switching transistor 2n3904 features pinning low current max. Data sheet book, halfpage m3d186 2n3904 npn switching transistor. Back in the day they would be published as big thick books containing for. In certain cases, the quoted collector current may be exceeded. I during 80s and 90s, i used to search for components equivalents in books. Smallsignal transistor data book, 86 pages, 1984, motorola. Smallsignal transistors replacement list bc337a bc337 equivalent type bc338 bc337 bc33816 bc33716 bc33825 bc33725 bc33840 bc33740 bc36816 bc63516 bc36825 bc63516 equivalent type bc547a bc546a bc548 bc547 bc548a bc546a bc548b bc547b bc548c bc547c bc549 bc547b bc549b bc547b bc550 bc547b bc550b bc547b bc557a bc556a bc558 bc557 bc558a. Nte electronics 2n3904 silicon npn transistor for general purpose amplifier and switch, 200 ma, 40v pack of 5. Smd devices are, by their very nature, too small to carry conventional semiconductor type numbers. Using 2n3904 transistor for a dc motor i am trying to power this random small dc motor i have, small toy sized using a transistor using a 5v line connected to the collector and i am applying a small voltage to the base and out the emitter goes the current to the dc motor, however, this doesnt seem to work. If you drop a tip41c into the circuit you should still be able to measure a signal at the amplifier output, but it will probably a lot lower because the current gain of the tip41c is a magnitude lower compared to the 2n3904. Instead, a somewhat arbitrary coding system has grown up, where the device package carries a simple two or threecharacter id code.