Original transistor type original alternative type modern substitute alternative substitute. In this tutorial well introduce you to the basics of the most common transistor around. The smd version of the 2sb857c is available as the nzt660 sot223. Directions for determining the thermal resistance rths for cooling fins can be found on page 11. Select a replacement transistor with equivalent ft.
Sometimes the 2s prefix is not marked on the package the 2sb857 transistor might be marked b857. It is the least widely used amplifier circuit because it only provides good voltage gain whereas current is unity. Although on semiconductors cross reference devices are functionally comparable to other manufacturers published information, we. Bu406 datasheet, bu406 pdf, bu406 data sheet, bu406 manual, bu406 pdf, bu406, datenblatt, electronics bu406, alldatasheet, free, datasheet, datasheets, data sheet. It is basically an npn bipolar junction transistor bjt. Itt intermetall 3 page contents 195 to 199 bias resistor transistors 201 to 204 addresses alphanumerical list of types 4 list of types 189 to 193 darlington transistors 5 to 17 technical information 19 to 65 smallsignal transistors npn 67 to 1 smallsignal transistors pnp 115 to 157 dmos transistors nchannel 159 to 187 dmos. And it has very low input impendence hence it is used in preamplifiers in the microphone base circuit and also for impendence. Theyre critical as a control source in just about every modern circuit. 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.
This circuit building software give access to switches, linear ic and digital ic, fet, transistors, relays, displays, signal generators, scrs, opto isolators, photo diodes, semiconductors, motors etc. The complementary npn transistor to the 2sb857c is the 2sd13c. Aug 25, 2011 crossreferences are not magic, understanding of the circuit and a parametric search of the important parameters is much more reliable. These transistors are utilised in audio frequency, and small signal directly coupled preamplifiers. They give you high quality, high performance in countless applications, from strobe flash units to dcdc conversion. Most projects will specify a particular transistor, but if necessary you can usually substitute an equivalent transistor from the wide range available. Transistor codes surface mount, pnp, npn, choosing. 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. Datasheets bc80725, bc80725lt1g, bc80725w, kst4123, mm1z10, mm5z6v8, st6205bs23rg. Understanding transistor cross reference, equivalent. Electronic circuit design and simulation software list.
They have different numbers of color bands and hence provide different information. Sometimes the 2s prefix is not marked on the package the 2sb857c transistor might be marked b857 c. The schematic illustrates some of the voltage measuring points on the transistor schematic. Dont go for a transistor with a much higher ft as this may increase the risk of oscillation. Application note the electrical characteristics and equivalent circuit. B688 datasheet pnp silicon power transistors mospec. Smd type transistors pnp transistors bc856w,bc857w,bc858w kc856w,kc857w,kc858w features ideally suited for automatic insertion for switching and af amplifier applications 1. Pc max ucb max uce max ueb max ic max ft max cctip pf hfe tj euro equivalent, usa equivalent, ussr equivalent, japan equivalent.
Transistor equivalent electronics forum circuits, projects. If a mica insulation is used, the thermal resistance of the mica washer must be added, which amounts to about 0. The information presented in on semiconductors cross reference tool is based on our best estimate of other manufacturers published information at the time that we collected this information. Instead, a somewhat arbitrary coding system has grown up, where the device package carries a simple two or threecharacter id code. Transistor equivalents for the substitution of modern.
Jan 24, 20 for the best answers, search on this site mosfets are a type of transistor but they dont function like a bijunction transistor, like the 2n3055. Lm317 is a positivevoltage regulator with an adjustable voltage range from 1. 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. World transistor equivalents data az by eca author 4.
The ability to change conductivity with the amount of applied voltage can be used for. Which software tool is best to design a circuit diagram. The importance of transistor cross reference, datasheet, equivalent and specification. Lm317 pinout, example circuits, datasheet, applications. Standard bipolar transistors 267 automotive bipolar transistors 69 parametric search. Schematic diagram for grundig portable radio stereoconcertboy 210 transistor 4000a stereo. Looking for equivalent transistor electrical engineering.
Pricing and availability on millions of electronic components from digikey electronics. So called equivalent parts, or nte replacements, may not work at all in some cases, because they were worse in some spec, or the circuit was designed with the assumptions that the part had a fairly low bandwidth. I have across this circuit across a lot of forums and was just wondering if i could replace bc547 q1 in the circuit with the commonly used 2n2222 npn transistor. You can calculate the value of an unknown resistor with this program. Smd devices are, by their very nature, too small to carry conventional semiconductor type numbers. Bu515 can be replaced with bu508, because both are used in tv horizontal deflection section. 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. Look for something an npn transistor might be called an rf transistor, of course with similar or somewhat higher ft, similar or somewhat lower cob, and hfe in the same range to make it more likely it oscillates, and similar or somewhat higher pd, vceo, and ic to make sure it doesnt burn out. Parameter symbol rating unit bc856w 80 collector base voltage bc857w vcbo 50 bc858w 30 bc856w 65 v.
Bipolar transistors database contain more than 46000 transistor. Marking of electronic components, smd codes 5b, 5b, 5b, 5b1, 5bw, 5bp, 5bt. Since the distribution of heat in the transistor crystal is not uniform and depends on voltage and. Pls i need transistor equivalent of ztx300 and 2n3705.
Bipolar transistors database bipolar transistors database contain more than 46000 transistor data npn and pnp transistors. Most publishers require for a high definition supporting graphic. Cross reference universal transistor reference page 1. How to choose a replacement for a bipolar transistor total. So, the basic purpose of transistor is transfer of resistance. Low vcesat biss transistors single npn cost effective replacements for larger alternatives our low vcesat biss devices are the perfect solution for keeping your designs power consumption and heat dissipation to a minimum. In most of the applications, due to irregular loads, the output voltage produced has fluctuations in it which can lead to damaging loads. Should you find any info that can fill in any of the blanks in the matrix below. Apr 28, 2014 download bipolar transistors database for free. The first datasheet also has the same typo potableportable so you can use the ss90 not only in your eda software but also in your.
The left hand diagram below is a single common emitter stage for analysis. In common base amplifier, input is applied to be junction and output is taken from bc terminal, here base terminal is common for both input and output. I have a small circuit which controls the speed of a dc motor as per the ambient temperature. Single out the parameters most important to you and look. Transistor equivalent software free software download. Bc547 cross reference electronic circuits, tv schematics, audio. B857 datasheet, b857 pdf, b857 data sheet, datasheet, data sheet, pdf. Thermal characteristics symbol parameter conditions min typ max unit 1 192 kw 2 125 kw rthja thermal resistance from junction to. Semiconductortransistor crossreference list peavey. B857 datasheet, b857 pdf, replacement, equivalent, data sheets, b857 pinout.
Rf power transistor npn silicon, mrf477 datasheet, mrf477 circuit, mrf477 data sheet. General purpose bipolar transistors product search. Transistor equivalents for the substitution of modern transistors in elderly projects. At ac the reactance of coupling capacitors c1 and c2 is so low that they are virtual short circuits, as does the bypass capacitor c3. B857 datasheet 2sb857, pdf, pinout, equivalent, replacement, schematic, manual, data, circuit, parts, datasheet. Transistors handbook for ios free download and software. Dec 29, 2015 the user can alter the vcc, vbe, transistor beta and any of four resistor values r1, r2, rc and re by picking the transistor value from a standardvalue resistor table or manually entering the value.
The id printed on components can be misleading, and is sometimes a shortened version of all the info needed for an accurate crossreference. Planar silicon transistor npn triple diffused planar silicon transistor 140v. Sir, can anyone help me finding replacement of power transistors. Bu2506df transistor datasheet pdf power transistor. See all formats and editions hide other formats and editions. Move the mouse over the transistor to see labels for the three terminals.
But 8050 and 8550 seem by fit to make pushpull amplifer. Standard bipolar transistors 267 show hide parameters. Diode 1n9148 1n4307 1n4532 diode 1n3605 2n2222 chip 2n2369 transistor se708 ma1704 ma1703 text. Equivalent mosfet auk fairchild toshiba rohm vishay ir st stk1828ef q 2sk1830 q q stj828ef q 2sj347 q q stk1828uf q 2sk1829 q q stj828uf q 2sj346 q q stk1828sf q 2sk1828 q stj828sf q 2sj245 q q stk7002 2n7002 q q 2n7002e stk7000 2n7000 q q 2n7000kl stk0602 q q rk7002 2n7002k. Transistor hybrid model to demonstrate the hybrid transistor model an ac equivalent circuit must be produced. The links at left may help you to research your own replacement transistors. Semiconductor transistor, diode, ic cross reference. This spice simulation software provides 4000 devices on its student version which is of the pro version. Bipolar transistors database bipolar transistors database contain more than 46000 transistor data npn. Today, i am going to give an introduction to bc547. Bc857 datasheet, equivalent, cross reference search.
The 2sb857 transistor might have a current gain anywhere between. The emitter is at ground, and the base and collector voltages can be controlled using the sliders at right. Bf199, bf494, 2n4001, 2n4003, mpsa18 and there are all i have. Download ic database equivalent guide 100 thousand. The word transistor is a combination of two words, transfer and resistor. Once the transistor specifications and parameters have been ascertained, it is possible to check for other replacement transistor types with similar parameters that. Sometimes the 2s prefix is not marked on the package the 2sc3990 transistor might be marked c3990. Savantic semiconductor product specification silicon npn power transistors bu2506df. Electro tech is an online community with over 170,000 members who enjoy talking about and building electronic circuits, projects and gadgets. The graphs of the above voltages and currents characterize a particular transistor e. The complementary npn transistor to the 2sb857 is the 2sd13. Transistors have dozens of parameters and it can be difficult to find a perfectly matching equivalent.
This module is devoted to the design of a transistor amplifier and this involves choosing the values of five resistors and three capacitors. Apr 17, 2017 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. This transistor has a low collector capacitance and has excellent gain up to several megacycles. Bipolar transistors database contain more than 46000 transistor data npn and pnp transistors. Motorola, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. A transistor is normally used for amplification of current. The initial 2n identifies the part as a transistor and the rest of the code identifies the particular transistor. All electronic repairers should know how to read the transistor cross reference equivalent book if they want to succeed in electronic repairs. Bc549c transistor the bc549c is an npn transistor belonging to a group of generalpurpose npn semiconductors consisting of bc547, bc548, and bc549. Transistor equivalent list 8ch pnp darlington transistor array pnp octal darlington transistor arrays equivalent transistor 2sk td62783 equivalent 2sk1078 td62783 pnp darlington transistor array td62504 equivalent text.
Choosing transistor replacements electronics notes. Bc327 cross reference electronic circuits, tv schematics, audio. Cross reference electronic circuits, tv schematics, audio. Look for something an npn transistor might be called an rf transistor, of course with similar or somewhat higher ft, similar or somewhat lower cob, and hfe in the same range to make it more likely it oscillates, and similar or somewhat higher pd, vceo, and ic to make sure it doesnt burn out package is up to you whether you want to try to duplicate it or not that one to106. The 2n3904 is a common npn bipolar junction transistor used for generalpurpose lowpower. Jan 10, 2016 b688 datasheet pnp silicon power transistors mospec, 2sb688 datasheet, b688 pdf, b688 pinout, b688 equivalent, data, circuit, output, b688 schematic. Download npn dcbias calc voltage divider bias npn bipolar.
Diodes and transistors pdf 28p this note covers the following topics. Marking of electronic components, smd codes 5b, 5b, 5b. Iam searching for the equivalent of d965 transistor. 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. Download ic database equivalent guide 100 thousand components toni april 17, 2017 april 4, 2012 datasheet, download ic software database dated 2003 with database information from more than 100,000 semiconductors such as transistors and integrated circuits. Little current flows into the base unless it is above about 0. Equivalent transistor mje01 datasheetparts requests. Transistor equivalent c945 may be insufficient information to determine an accurate replacement device.
I hope you all will be absolutely fine and having fun. Common base amplifier, bjt transistor commonbase amplifier. Digital photo data recovery software supports recovery of photos, pictures, images, snap shots photographs when accidentally deleted, lost or missed from hard disk partitions and removable storage devices including digital camera, mobile phone communicator, mp3 music player, memory card, electronic digital devices and other equivalent usb storage devices. About 7 to 10 thousand transistor bars can be cut from each ingot of germanium. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34.