The bc548 is a part of a family of npn and pnp epitaxial silicon transistors that originated with the metalcased bc108 family of transistors. Diodes and transistors pdf 28p this note covers the following topics. Bc546 bc547 bc548 bc549 bc550 npn epitaxial silicon transistor 2002 fairchild semiconductor corporation. Free transistor circuits books download ebooks online.
Bc548 is another general purpose widely used transistor that can be easily get from reputable electronic components store, this transistor also have bunch of good features on the basis of which one can use it in their electronic circuit, it can handle maximum current of 500ma which is enough to drive many other components such as ics, other transistors, portion of a circuits, relays, leds etc. After comparing the spec sheets online and doing a little bit of googling, i found that pnp transistor 2n3906s characteristics and specs seem to fit pretty well with bc559 and bc548 fits fairly well with 2n3904s. About 7 to 10 thousand transistor bars can be cut from each ingot of germanium. The pnp equivalent is the complimentary transistor, which is the bc557. The transistor comes in four different part numbers like bc548, bc548a, bc548b and bc548c and the only difference between the four is their dc current gain value, like bc548 current gain value is from 110 to 800, bc548a is from 110 to 220, bc548b is from 200 to 450, bc548c.
Discrete semiconductors selection guide 2010 diodes, transistors, esd and signal conditioning devices excellence in portfolio and performance. Bc546b, bc547a, b, c, bc548b, c amplifier transistors. 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. What is the use of transistor bc548 in water level indicator. Bc548 datasheet, equivalent, cross reference search. Bc548 is a npn transistor so the collector and emitter will be left open when the base pin is held at ground and will be closed when a signal is. Circuit custom power supply for audio amplifier symmetrical. 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. Transistor equivalent book pdf free download by corfikome. Industry standard st nearest st replacement industry standard st nearest st replacement 1 different pin out 2 similar package 3 medium power transistor bc850b bc847b bc850c bc847c bc850w bc847bw bc850bw bc847bw bc850cw bc847cw bc857 bc857b bc857a bc857b bc857b bc857b bc857c bc857b bc857w bc857bw bc857aw bc857bw bc857bw bc857bw bc857cw bc857bw.
As viewed in the topright image, going from left to right, the pinout is as follows. This is a pdf format of the well known hardware pinout book, which covers various computer, electrical and electronic item pinouts. Motorola small5ignal transistors, fets and diodes device data. Thanks for a2a the bc548 transistor is used in water level indicator as a sensor.
Bc548 transistor pinout, equivalent, uses, features. The bc548 family, including the bc547a to bc550c, are lower voltage, lower. Aug 27, 2010 post the link my guess is the description is from someone that isnt a native english speaker a remote control is distinguished from a local control the local controls are physically located on the tv and must be operated in close proximity of the tv, i. It is nothing but a npn transistor the base current given by applying base emitter vo. Apr 01, 2009 what im attempting to create is my own transistor logic rs232 rs232 refers to the serial com1 port on computers.
Oct 26, 2017 bc557 transistor as switch when a transistor is used as a switch it is operated in the saturation and cutoff region as explained above. Bc548 has a gain value of 110 to 800, this value determines the amplification capacity of the transistor. Zs and zts are both 2pc4081q devices made by philips. Full text of national databooks 1982 national transistors databook see other formats. Can you guys help me find out the transistors that can. You can always remember that the arrow points at the n material. Com is the biggest online electronic component datasheets search engine. The bc548 is a generalpurpose npn bipolar junction transistor commonly used in european and american electronic equipment. Can general purpose transistors like 2n3904, 2n4401, bc547, 2n2222, etc. Static equivalent circuits of npn and pnp transistors. Replacement devices index at the back of the book to see if there is a replacement part for the. It is designed for low current and power, medium voltage, and.
Buy international transistor equivalents guide bernard babani publishing radio and electronics books by michaels, adrian isbn. This is identical in every respect to the npn type, except that it is a pnp type. Download ic database equivalent guide 100 thousand. Amplifier transistor pin configuration 625mw bottom view c b e. Free packages are available maximum ratings rating symbol value unit collector emitter voltage bc546 bc547 bc548 vceo 65 45 30 vdc collector base voltage bc546 bc547 bc548 vcbo 80 50 30 vdc emitter base voltage vebo 6. Pnp silicon epitaxial planar transistor 1 high speed switching. They are fairly common there, used typically in lower power household electronics such as netbook processors and plasma televisions. The 2n2222 is a common npn bipolar junction transistor bjt used for general purpose. The maximum amount of current that could flow through the collector pin is 500ma, hence we cannot connect loads that consume more than 500ma using this transistor. Bc548 bc548a bc548b bc548c npn general purpose amplifier bc548 bc548a bc548b bc548c this device is designed for use as general purpose amplifiers and switches requiring collector currents to 300 ma.
The generalpurpose range of transistors is a good substitute for basic noncritical audio applications, as these transistors are similar and equivalents to each other. International transistor equivalents guide bernard babani. Absolute maximum ratings ta 25c unless otherwise noted. Transistor equivalents for the substitution of modern. A 314kb product overview view reliability data view. This transistor has a low collector capacitance and has excellent gain up to several megacycles. It is notably often the first type of bipolar transistor hobbyists encounter and is often featured in designs in hobby electronics magazines where a generalpurpose transistor is required.
Transistor equivalent or substitute used for power amplifier. Bc548c datasheet, equivalent, cross reference search. Vbe decreases by about 2 mvk with increasing temperature. Bc548c npn transistor complementary pnp, replacement. Electronic components i was amazed to have come across your website. While this book is a little outdated, it shows current going from the negative to positive terminal. Problem is, i cant find a bc148 transistor and im looking for a substitute. It is designed for low current and power, medium voltage, and can operate at moderately high speeds. Com datasheet search site for electronic components and semiconductors and other semiconductors. The 2n3904 is a common npn bipolar junction transistor used for generalpurpose lowpower amplifying or switching applications. Components study 555 projects construction solder books faq symbols starter kit tools. This article describes bc548 transistor pinout, equivalent, uses, features and other information about this device. I want to build this circuit, but i dont have the proper transistors.
The bc548 is a generalpurpose npn bipolar junction transistor commonly used in european. If you cant search it here, nowhere else in the world. Bc548 bc548 npn general purpose transistor datasheet buy bc548. Transistors are one of the most important circuit board components, and replaced vacuum tubes in the mid20th century, allowing for the true miniaturization of electronics. Everyday low prices and free delivery on eligible orders. To the untrained eye, a circuit board simply looks like a green piece of plastic with innumerable small. Thus the bc548 or bc546 to 550 is a valid substitute in any circuit designed for the older bc108 or bc148, which includes many mullard and philips. Bc548 transistor replacement datasheet, cross reference, circuit and. Bc559b bc557b bc559c bc557b 1 different pin out 2 similar package 3 medium power transistor industry standard st nearest st replacement industry standard st nearest st replacement. Here is an image showing the pin diagram of the this transistor.
Package cross reference 88 packing methods 90 minimized outline drawings and reflow soldering footprint 96. Bc548 is a npn transistor so 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. I am kinda new to this circuit making stuff, and i took a introductory subject to electrical engineering. In the united states and canada, a similar transistor is named 2n3904. My problem is i couldnt find the two transistors, npn bc548 and pnp bc559 at any of my nearby radio shacks. Our payment security system encrypts your information during transmission. Rating collector emitter voltage collector base voltage emitter base voltage collector current continuous total device dissipation 25c derate above 25c total device dissipation 25c derate above 25c operating and storage junction. Bc548c transistor datasheet pdf, bc548c equivalent. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the collector, base, and emitter leads. Is there anything available to see if a particular transistor can be replaced with a different one. Bc548 transistor introduction the world of electronic parts and. Npn silicon transistors with similar properties are also made in a variety of small. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. May 04, 2016 d1554 datasheet vcbo1500v, npn transistor toshiba, 2sd1554 datasheet, d1554 pdf, d1554 pinout, d1554 equivalent, d1554 data, circuit, d1554 schematic.
So i just wanted to know can the bc148 be used as a general substitute for 2n2222 or is it just the case in this. Check our section of free e books and guides on transistor circuits now. Allieds handbook of transistor fundamentals author. The complimentary transistor is very useful for symmetrical pushpull amplifier circuits. There are two types of standard bipolar junction transistors, npn and pnp, with. Mar 11, 2008 its an npn transistor rated for 500ma, 50v and with a hfe gain between 20 and 300, typically 80 at 0. Download book 200 transistor circuits talking electronics.
The assignment of transistor elements b,c, e to leads, i. Bc548 transistor pinout, equivalent, working as amplifierswitch. I tried to get some parts from renowned electronic shops from mumbai, delhi and other cities but to no avail. The bc548 is supplied in a standard to92 3pin package.
Maximum output current from ic check the ic datasheet. Substitute for 2n2222 electronics forum circuits, projects. Bc549c transistor the bc549c is an npn transistor belonging to a group of generalpurpose npn semiconductors consisting of bc547, bc548, and bc549. Bc807 bc808 bc817 bc818 bc846 bc847 bc848 bc849 bc850 bc856 transistors bc337 transistor equivalent bc337 hie hre hfe equivalent transistor bc547 bc547 sot 23 transistor bc337 hie bc547 equivalent bc327 equivalent bc338 equivalent bc547 sot23. Bc546b, bc547a, b, c, bc548b, c amplifier transistors npn silicon features pb. These transistors are utilised in audio frequency, and small signal directly coupled preamplifiers. Substitute to bc148 transistor electronics forum circuits. A zener diode is inevitably formed by each of the transistor s np or pn junctions, and the transistor is thus in static terms equal to a pair of reverseconnected zener diodes wired between the collector and emitter terminals, with the base terminal wired to their common point. After hitting a roadblock on 2 beginner transistor books, this book has really clarified for me at least the first fundamentals of transistors, especially how the current flows in the input circuit and the output circuit. The bc549c is an npn transistor belonging to a group of generalpurpose npn semiconductors consisting of bc547, bc548, and bc549. As discussed a transistor will act as an open switch during forward bias and as a closed switch during reverse bias, this biasing can be achieved by supplying the required amount of current to the base pin. L smd databook electronic circuits, tv schematics, audio. This page contains list of freely available e books, online textbooks and tutorials in transistor circuits. Bc548 is an npn transistor, so when the base pin is grounded, the collector.
Bc548 transistor pinout, equivalent, working as amplifier. 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. If its just switching, then its much less important to get an exact equivalent and even something like a bc337 would probably do. Discrete semiconductors data sheet book, halfpage m3d186 bc546. Original transistor type original alternative type modern substitute alternative substitute. 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.
I found a perfect simple circuit schematic which ive attached below, and ive purchased the breadboard, soldering iron and all the exact resistors, capacitors and diodes required. Small signal transistors industry standard st nearest st. Unit vcbo collectorbase voltage open emitter bc546. Smallsignal transistor data book, 86 pages, 1984, motorola. I have a small circuit which controls the speed of a dc motor as per the ambient temperature. If the transistor is a pnp, then the arrow points to the base of the transistor, otherwise it points to the output. 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. I have seen many circuits using the 2n2222 transistor correct me if it isnt one. The internal appearance of one these transistors is shown in figure 8. Transistor datasheetpdf dtc1zu3hzg rohm category transistor datasheetpdf rohm dtc1zu3hzg datasheet, npn 100ma 50v digital transistor bias resistor builtin transistor, central semiconductor corp cp588. I have use bc547 for a project water level indicator. Bc548 transistor pinout, equivalent, uses, features components. The symbol of the transistor has an arrow on the emitter. Pinning pin description 1 emitter 2 base 3 collector fig.