At the end of the course you will be able to understand about the small signal analysis of circuit network using re model and hybrid equivalent model understand the relationship between those two available model for small signal analysis. Symbol parameter conditions value unit rth ja thermal resistance from junction to ambient note 1 250 kw. Apr 01, 2009 after comparing the spec sheets online and doing a little bit of googling, i found that pnp transistor 2n3906 s characteristics and specs seem to fit pretty well with bc559 and bc548 fits fairly well with 2n3904s. This is a pdf format of the well known hardware pinout book, which covers various computer, electrical and electronic item pinouts. May 24, 2020 it is a very simple amplifier circuit using transistor 2n3904 only. Choosing transistors for radio frequency applications page 1. To bias the transistor, we have to supply current to the base pin, which should be limited to 5ma.
Free transistor circuits books download ebooks online textbooks. Electronics club transistors types, connecting, soldering. 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. Nov 30, 2015 transistor gain drops with increasing frequency. General characteristics and outlines of the 2n3904 and 2n3906 lowpower silicon transistors. It very much similar to the bc557 transistor except for that it has high collector to emitter voltage and hence high voltage loads can be toggled. There are many radio circuits and plenty of guides of how to bias transistors and different amplifier configurations but not so much on selecting the right components for high frequency applications. Can i use the 2n3906 pnp transistor to activate a small fan 12v240ma. This transistor has only a gain value of 300, hence not suitable for amplifier circuits. The 2n3906 is specified by a collector current of 200 ma, collectorbase and collectoremitter voltages of 40 v, for power dissipation of 300 mw. How to use 2n3906 pnp transistor the world of electronic. I would appreciate somebody telling me if my approach is correct or where i have gone wrong.
The smd versions of the 2n3904 are available as the 2sc1623 sot23. Data sheet book, halfpage m3d186 2n3906 pnp switching transistor. Ic cross reference cross reference ci stk cross reference ci tda cross reference ci sharp cross reference hitachi audio ic cross reference and circuit applications smd cross reference and equivalent 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. It goes further and it offers exactly what you were talking in this topic, real replacements like the 80s and 90s replacements crossreference books. Datasheet,contact us for better price for bulk orders.
The 2n3906 is a commonly used pnp bipolar junction transistor intended for general purpose. Obviously, amplifiers and oscillators should operate somewhat below this frequency. Transistors including signal transistors and power types. Switch using 2n 3906 transistor all about circuits. I have a control signal that vary between 0v and 3,3 vdc at base, but the transitor not open when the voltage at base reach the 3. Buy mcigicm 200pcs 2n3904 npn transistor, 2n3904 bipolar bjt transistors npn 40v. Discrete semiconductors data sheet book, halfpage m3d186 2n3906 pnp switching transistor 1999 apr 23 product specification supersedes data. In certain cases, the quoted collector current may be exceeded. Its transition frequency f t is 250 mhz, with a beta of at least 100. Very simple amplifier circuit using transistor 2n3904. Replacement and equivalent transistor for the 2n3904. Ive been trying to figure out how to select transistors for radio frequency circuits but not being able to find much information on the web.
Blog entry using transistor as a switch december 23, 2008 by rwb, under electronics most of microcontrollers work within 5 volt environment and the io port can only handle current up to 20ma. The 2n2907 is a commonly available pnp bipolar junction transistor used for general purpose lowpower amplifying or switching applications. And this is how a basic pnp transistor circuit works. Transistor kit 10 value 200pcs npn pnp power transistor. I am trying to use one 2n3906 transistor as a switch. The complementary npn transistor vs the 2n3906 is the 2n3904. This page contains list of freely available e books, online textbooks and tutorials in. Transistors can be damaged by heat when soldering so if you are not an expert it is wise to use a heat sink clipped to the lead between the joint and the transistor body. The maximum current flowing through the collector pin is 200ma, so we cant use the transistor. The complementary pnp transistor to the 2n3904 is the 2n3906. Sep 22, 2009 you might try eca for transistor comparison books. Small signal transistor data book, 86 pages, 1984, motorola. Basic jellybean transistors like the bc558 or 2n3906 might do the job. The complementary npn transistor to the 2n3906 is the 2n3904.
Pnp switching transistor 2n3906 thermal characteristics note 1. Figure 4 lists the basic characteristics of two typical generalpurpose, lowpower types the 2n3904 npn and the 2n3906 pnp which are each housed in a to92 plastic case and have the underside pin connections shown in the diagram. Emitter amplifier applications as complementary type, the npn transistor 2n3904 is 2. Apr 05, 2008 it has been very useful for me because it doesnt provide only the nte replacements. Suppose you build a differential pair from mmbt39042n3904 surface mount equivalent transistors with mmbt3906 2n3906 surface mount equivalent for a current mirror. Here, the emitter current of the input transistor feeds directly into the base of the output transistor, and the pair act like a single transistor with an overall h fe value equal to the product of the two individual hfe values, i. Base recommended this transistor is also available in the sot23 case with. A simple audio amplifier for your radio projects nov. Step by step build of 2n3904 npn and 2n3906 pnp transistor silicon controlled rectifier scr circuit enjoy the videos and music you love, upload original content, and share it all with friends, family, and. Perhaps surprisingly, many generalpurpose pnp transistors will work with no modifications. Data sheet electrical engineering at new mexico tech. You can replace the 2n3904 with the 2n4401, 2sc1008, 2sc1210, 2sc1211. As af12x transistors are hard to find, its worth considering silicon devices in this role.
You can buy a special tool, but a standard crocodile clip without a plastic cover works just as well and is cheaper. Get the best deals on motorola transistors when you shop the largest. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. Free packages are available maximum ratings rating symbol value unit collector. Its transition frequency f t is 250 mhz, with a beta of at least. Semiconductor transistor, diode, ic cross reference. Lot of 100 on semi motorola mpsa18 original oem transistor new. It is designed for low to medium current, low power, medium. It is a high gain but low power output and inverts signal output. Pnp switching transistor 2n3906 limiting values in accordance with the absolute maximum rating system iec 4. Mcigicm 200pcs 2n3906 pnp transistor,2n3906 bipolar bjt transistors pnp 40v 200ma 250mhz. Both types were registered by motorola semiconductor in the mid1960s. Transistor kit 10 value 200pcs npn pnp power transistor assortment kit, transistors box pack for bc337, bc327, 2n2222, 2n907, 2n3904, 2n3906, s8050, s8550, a1015, c1815 by kulannder by.
Buy micro electronics bf337 silicon npn transistor. 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. Transistors including small signal transistors, power transistors and mosfet types. Ic cross reference cross reference ci stk cross reference ci tda cross reference ci sharp cross reference hitachi audio ic cross reference and. At the end of the course you will be able to understand about the small signal analysis of circuit network using re model and hybrid equivalent. Suppose you build a differential pair from mmbt39042n3904 surface mount equivalent transistors with mmbt39062n3906 surface mount equivalent for a current mirror. Bc557, 2n2907, bc556, a1015, c945, 2n4403, 9014, bc527, bc558, bc559 the pin configuration of the equivalent transistors may different from the 2n3906, therefore it is suggested to always confirm the pin configuration of the transistor you are replacing in the circuit. You also use transistors that are next to each other on the reel. Step by step build of 2n3904 npn and 2n3906 pnp transistor. Check our section of free e books and guides on transistor circuits now. This kit is what you need to develop numerous different transistor circuits. The maximum current flowing through the collector pin is 200ma, so we cant use the transistor connection to consume more than 200ma load.
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