That said, if we focus on the family, the differences between all members are quite slight. Fortunately many transistors used in electronic circuit design are general purpose types. BC547 Equivalent Transistors BC549, BC636, BC639, 2N2222 TO-92, 2N2222 TO-18, 2N2369, 2N3055, 2N3904, 2N3906, 2SC5200 Brief Description on BC547 BC547 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. Unlike EC (Common Transmitter), which is the only one to achieve both voltage and current gains, and CC (Common Collector) very useful to adapt stages with very different impedances respectively. This package was much more expensive than the plastic equivalent TO-92, but the heat dissipation was better in the first package. [ I DO NOT respond to personal messages, I WILL delete them unread, use the forum please ]. I will be able to buy BC547 but I will use the S8050 because I have it, Transistor as as switch - replace BC547 with S8050, Topic: Transistor as as switch - replace BC547 with S8050, Re: Transistor as as switch - replace BC547 with S8050,,, Quote from: botzko on Dec 06, 2017, 06:11 pm. And it was evolving from BC108, BC238, to what we know today as BC548 with a cheaper TO-92, package and from here the variants like BC547 emerged. Besides these uses it can also be used in commercial circuits. the power dissipation (a measure of power that transistor can provide): 2N2222A - 625mW. BC547 is usually used for amplification and switching purposes. Le transistor BC547 est trié par gain en BC547A, BC547B et BC547C. Furthermore, by its acronym BC it shows that it is a Common Base topology, achieving a high voltage gain in its output without inverting the output signal. Les transistors BC547 (et les autres de la gamme) ont un gain en courant (noté hfe) qui varie énormément d'un transistor à l'autre. Thank you @Mikeb1970. BC547 and BC548 are essentially the same but BC547 has a higher breakdown voltage whereas BC548 has low noise. After knowing some things in common with the family members, let’s focus on some magnitudes and characteristics specific to BC547. There are also other designations such as BF, but in this case it is used to identify transistors used for RF (radio frequency), that is, those that achieve good gains at very high frequencies. In the case of maximum accepted voltages, this varies depending on the model as we have seen. This will remind you something if you have studied topics like high pass and low pass frequencies, right? The BC546 transistor might have a current gain anywhere between 110 and 800. The gain of the BC546A will be in the range from 110 to 220, BC546B ranges from 200 to 450, BC546C ranges from 420 to 800. The differences between the series were basically the packages, being equal inside them. These types of bipolar transistors are made from materials such as germanium, silicon or gallium arsenide. These documents can be downloaded in PDF from the official websites of the manufacturers of the devices, and there you will find the values. These maximum frequencies will guarantee that the transistor amplifies at least 1, since the higher the frequency, the lower the amplification of the transistor due to the capacitive part of it. Home » Electronic components » Transistor BC547: all you need to know. Franchement les BC 546,547,548 et le 2N2222A ce sont des transistors tres courants qui se vendent chez tous les vendeurs de composants meme chez les + demunis ou malheureux et ça coute rien entre 15 a 40 centimes d'euro. Introduction. That is, this would be the maximum current that can flow between the collector and the emitter, controlled by the base as if it were a switch. BC547 - 100mA. S8050.png 73.75 KB downloaded 1065 times BC547.png 124.9 KB downloaded 673 times Google is a great tool, … The SMD versions of the BC546 are available as the BC846 (SOT-23) and BC846W (SOT … The BC547 is an NPN Bipolar Junction Transistor (BJT). This transistor series further divides into three groups consisting of BC547A, BC547B, and BC547C, according to the current gain. Mike Darn, I can't post the images in the text, had to include them as attachments, sorry . Later it would have a new plastic package and renamed with the code BC148. Je cherche un équivalent au BC547: un 2N2222A, un BC237B ou 238, un BC409C, ou un 1N1711 conviendrait-il? I hope this helps you. In most cases you could. Transistor BC547: all you need to know. The gain of the BC547A will be in the range from 110 to 220, BC547B ranges from 200 to 450, BC547C ranges from 420 to 800. These transistors are utilised in audio frequency, and small signal directly coupled preamplifiers. Afficher une version imprimable. Voici les gains des transistors : This is a bipolar junction transistor that was originally developed by Philips and Mullard between 1963 and 1966. If you are a maker, you like DIY and electronics, you have probably ever needed to use a BC547 transistor. If a small amount of current applyed on the base terminal of this transistor, it can control a large amount of currents at the collector and emitter terminal. Tu mets n'importe quoi NPN.... sauf 1N1711 qui devrait être une diode. Initially it was named BC108 and had a metal housing type TO-18 (Transistor Outline package – case style 18). BC547 is a general purpose BJT NPN transistor mostly used in electronics hobbyists and educational electronics projects. The BC547 transistor might have a current gain anywhere between 110 and 800. In the case of BC548, like its family brothers, they have a very good gain of between 110 and 800 hFE for direct current. Là aussi, c'est un classique des transistors bipolaires. It depends on the frequency response of the transistor whether you can work with one frequency or the other. The frequency response is very important for amplifiers. Google is a great tool, also for programming problems. You may be faced with the dilemma of having to use a different or complementary type of transistor to the BC547 in a circuit. Bien que ce manuel soit en Italien et édité à Milan, les termes techniques sont internationaux. So you can find perhaps BC547 datasheets with somewhat variable voltages to what is specified here …. If there is no such letter, then it could be any one within the range I have given. Save my name, email, and website in this browser for the next time I comment. MOTOROLA Order this document SEMICONDUCTOR TECHNICAL DATA by BC546/D Amplifier Transistors BC546, B NPN Silicon BC547, A, B, C BC548, A, B, C COLLECTOR 1 2 BASE 3 EMITTER 1 MAXIMUM RA . Outils de la discussion. This is usually specified with an extra letter at the end of the nomenclature indicating the gain range considering the tolerance of the device. 0.2. bc546 bc547 3.pdf Size:53K _philips DISCRETE … October 27, 2020 October 2, 2020 by James Smith. pierre199. To identify them, we must look at them from the chamfered or flat face of the package, that is, leaving the rounded face for the other side. collector current (output current in common emitter config): 2N2222A - 600mA. collector terminal, base terminal and emitter terminal respectively. BC547 Transistor Equivalent Substitute - Cross-Reference Search BC547 Datasheet (PDF) 0.1. bc546 bc547 bc548.pdf Size:193K _motorola. Its maximum current gain is around 800. Imagine that you have designed the circuit to work with a minimum of 200hFE and you have a BC547B but you decide to replace it with a BC547A or BC547, it may not reach that rate and it may not work… If you make it to work with 110, either one will work. So your application defines your selection in such cases. pour daudet78: désolé pour la faute de frappe c'est promis je recommencerai pas. All of them are bipolar or bipolar junction transistors (BJT). BC547 belongs to the family of transistors with similar characteristics as BC546, BC548, BC549 and BC550. [ 1] [ 2] BC547 - 500mW. That way it is guaranteed that the circuit is functional even if the gain is the minimum of the range, and it is also guaranteed that the circuit will continue to work if we replace the transistor. It consists of three terminals, these are emitter (E), collector(C), and base (B). That is, they are not field effect transistors like FETs, light-controlled phototransistors, etc. le BC547 est archi courant chez les épiciers. That is, a semiconductor doped with an element of the periodic table that allows it to have an excess of charge carriers (electrons) for the N parts, and a semiconductor doped with some element with less valence electrons giving rise to a P-type semiconductor with an excess of positive charge carriers in this case (holes). The general-purpose range of transistors is a good substitute for basic non-critical audio applications, as these transistors are similar and equivalents to each other. If you are a maker, you like DIY and electronics, you have probably ever needed to use a BC547 transistor.

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