{"id":94580,"date":"2024-11-05T11:01:37","date_gmt":"2024-11-05T10:01:37","guid":{"rendered":"https:\/\/botland.com.pl\/blog\/bc546-what-is-it-technical-data-schematic-diagram\/"},"modified":"2026-04-08T10:46:22","modified_gmt":"2026-04-08T08:46:22","slug":"bc546-what-is-it-technical-data-schematic-diagram","status":"publish","type":"post","link":"https:\/\/botland.store\/blog\/bc546-what-is-it-technical-data-schematic-diagram\/","title":{"rendered":"BC546 &#8211; What is it? Technical data, schematic diagram"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading time:<\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">min.<\/span><\/span>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"94580\" class=\"elementor elementor-94580 elementor-81522\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-12d0096 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"12d0096\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d29ddd2\" data-id=\"d29ddd2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9a46ed0 elementor-widget elementor-widget-text-editor\" data-id=\"9a46ed0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong><a href=\"https:\/\/botland.com.pl\/tranzystory-npn\/5248-tranzystor-bipolarny-npn-bc546b-65v-01a-5szt-5904422308018.html\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">BC546<\/a><\/strong> is a bipolar NPN transistor used in electronics <strong>for switching and signal amplification<\/strong>, among other things. Its operation is based on the use of a voltage applied to the base, which controls the current flow between the collector and emitter. The structure of the transistor allows <strong>modulation of the base current<\/strong>. This directly affects the intensity of the current flowing from the emitter to the collector, thus enabling, <strong>precise control of the signals in the circuit<\/strong>. What else is the BC546 transistor used for? What electrical parameters does it have?     <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c26dba0 elementor-widget elementor-widget-heading\" data-id=\"c26dba0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Basic information about the BC546 transistor<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-350f385 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"350f385\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-c86af2a\" data-id=\"c86af2a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ed67b97 elementor-widget elementor-widget-image\" data-id=\"ed67b97\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/05\/05248_3_kwadrat-e1730797620149.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"05248_3_kwadrat\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6OTQ1NjIsInVybCI6Imh0dHBzOlwvXC9ib3RsYW5kLnN0b3JlXC9ibG9nXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDI0XC8wNVwvMDUyNDhfM19rd2FkcmF0LWUxNzMwNzk3NjIwMTQ5LmpwZyJ9\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"791\" height=\"791\" src=\"https:\/\/botland.store\/blog\/wp-content\/uploads\/2024\/05\/05248_3_kwadrat-e1730797620149.jpg\" class=\"attachment-large size-large wp-image-94562\" alt=\"\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">NPN bipolar transistor BC546B 65V\/0.1A - 5pcs.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4fd5e48 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"4fd5e48\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/botland.com.pl\/tranzystory-npn\/5248-tranzystor-bipolarny-npn-bc546b-65v-01a-5szt-5904422308018.html\" target=\"_blank\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">CHECK<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-4697d09\" data-id=\"4697d09\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e931f7a elementor-widget elementor-widget-text-editor\" data-id=\"e931f7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The BC546&#8217;s ability to switch quickly and efficiently makes it an ideal choice for applications requiring <strong>not only amplification, but also current control<\/strong>. The BC546 is characterized by stability and high efficiency, making it applicable to a variety of electronic devices, from simple <a href=\"https:\/\/botland.com.pl\/21-uklady-scalone\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">circuits<\/a> to complex automation systems. In addition, its ability to operate <strong>over a wide range of voltages and currents<\/strong> makes it an important component in the construction of consumer and industrial devices.  <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-8c70aa6 elementor-widget elementor-widget-heading\" data-id=\"8c70aa6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Construction of BC546<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6417d90 elementor-widget elementor-widget-text-editor\" data-id=\"6417d90\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/botland.com.pl\/24-tranzystory\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">The<\/a> BC546 <a href=\"https:\/\/botland.com.pl\/24-tranzystory\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">transistor<\/a> is constructed with three main components, namely the emitter, base and collector. Each of these parts <strong>performs specific functions<\/strong> in the transistor&#8217;s structure, working together to efficiently modulate and control the flow of current within the circuit. <\/p>\n<ul>\n<li>In an NPN transistor, <strong>the emitter<\/strong> releases electrons to the base, which is an intermediate element. The emitter&#8217;s job is to provide most of the charge carriers necessary for current to flow through the transistor. The emitter must be distinguished by its high efficiency in electron emission to ensure the transistor&#8217;s performance.  <\/li>\n<\/ul>\n<ul>\n<li><strong>The base<\/strong>, on the other hand, is the central part of the transistor that controls the flow of electrons from the emitter to the collector. The base is much thinner than the other parts and acts as a gate that modulates and regulates the electron current. In <a href=\"https:\/\/botland.com.pl\/1422-tranzystory-npn\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">NPN transistors<\/a>, the base must be properly positively polarized with respect to the emitter to allow the flow of electrons. This component determines the state of the transistor (on or off). This capability is crucial in switching applications.    <\/li>\n<\/ul>\n<ul>\n<li><strong>The collector<\/strong> is the electrode that collects electrons coming from the emitter through the base. In an NPN transistor, the collector is usually connected to a higher potential than the emitter to attract electrons. The collector is designed to handle a higher current than the base. Its main function is to collect and transfer current to the next parts of the circuit.   <\/li>\n<\/ul>\n<p>These three elements allow the BC546 to act as a switch that quickly and efficiently opens and closes a circuit. In addition, the transistor can serve as an amplifier that increases the strength of the electrical signal flowing through the circuit.   <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1604ff0 elementor-widget elementor-widget-heading\" data-id=\"1604ff0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Electrical parameters<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a63104 elementor-widget elementor-widget-text-editor\" data-id=\"9a63104\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The <a href=\"https:\/\/botland.com.pl\/tranzystory-npn\/5248-tranzystor-bipolarny-npn-bc546b-65v-01a-5szt-5904422308018.html\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">BC546<\/a> transistor belongs to the NPN class. This means that the main current flows from the emitter (E) to the collector (C) and is controlled by the voltage applied to the base (B). In an NPN circuit, electrons flow from the emitter area to the collector area after passing through the base area, increasing the collector current depending on the voltage at the base.   <\/p>\n<ul>\n<li>The total power of the BC546 transistor is a maximum of <strong>0.5 watts<\/strong>. This is an important parameter that determines the maximum amount of energy the transistor can handle without damage. <\/li>\n<\/ul>\n<ul>\n<li>The maximum voltage that can be applied between the collector (C) and emitter (E) without breakthrough is<strong> 65 V<\/strong>. This is important to ensure safe operation of the transistor in various applications. <\/li>\n<\/ul>\n<ul>\n<li>The maximum collector current of the BC546 transistor is <strong>0.1 A.<\/strong> This parameter determines the maximum current that can flow through the collector-emitter without damage. <\/li>\n<\/ul>\n<ul>\n<li>The typical range of the BC546&#8217;s current amplification factor is <strong>from 200 to 450<\/strong>. This amplification refers to the ratio of collector current change to base current change. Higher values of hFE indicate greater signal amplification capability.  <\/li>\n<\/ul>\n<ul>\n<li>The BC546 transistor has a maximum switching frequency of <strong>300 MHz<\/strong>. This is important for applications requiring fast signal switching. <\/li>\n<\/ul>\n<p>The BC546 is available <strong>in a standard TO-92 housing<\/strong> known for its small size, low manufacturing cost and ease of assembly. This type of housing is commonly used in various electronic applications, making the BC546 transistor easy to implement. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eb8b8bb elementor-widget elementor-widget-heading\" data-id=\"eb8b8bb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Application of BC546<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8992cee elementor-widget elementor-widget-text-editor\" data-id=\"8992cee\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The BC546 is often used as <strong>a component of small-signal amplifiers<\/strong> in various electronic circuits. It is ideal for amplifying weak electrical signals such as audio signals in radios, <a href=\"https:\/\/botland.com.pl\/186-dzwiek-i-akustyka\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">audio<\/a> amplifiers and transducers. <\/p>\n<ul>\n<li>In addition, the BC546 is used <strong>to build simple oscillators and wave gener<\/strong>ators that generate signals of a specific frequency and wave form. Thanks to its ability to operate at relatively high frequencies, the transistor is used in simple circuits that generate sine, square and triangle waves. The transistor is used in electronic clocks, in tone generators and in signal modulators.  <\/li>\n<\/ul>\n<ul>\n<li>BC546 transistors are used <strong>as electromechanical control<\/strong>lers. They can be used to control DC <a href=\"https:\/\/botland.com.pl\/5-silniki\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">motors<\/a>, electromagnetic relays and other electromechanical devices in automation, <a href=\"https:\/\/botland.com.pl\/7-roboty-i-mechanika\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">robotics<\/a> and control systems. <\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-189068b elementor-widget elementor-widget-heading\" data-id=\"189068b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What else is it used for?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-46dc7a6 elementor-widget elementor-widget-text-editor\" data-id=\"46dc7a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/botland.com.pl\/tranzystory-npn\/5248-tranzystor-bipolarny-npn-bc546b-65v-01a-5szt-5904422308018.html\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">The BC546 transistor<\/a> is also used as part of signal converters that convert one form of electrical signal into another. It is used <strong>in audio signal processing circuits<\/strong> such as signal filters and tone balancing circuits. <\/p>\n<p>Another application of the BC546 is <strong>differential amplifiers<\/strong> used to amplify differential input signals. Devices of this type eliminate common noise and interference components. Such amplifiers are widely used in measurement circuits, Hi-Fi audio devices and <a href=\"https:\/\/botland.com.pl\/412-przetworniki-ac-i-ca\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">analog-to-digital converters<\/a>.  <\/p>\n<p>The BC546 transistor is also used to construct<strong> simple pulse amplifiers<\/strong> used to amplify electrical pulses of short duration. Such amplifiers are used in various applications such as pulsed light sources, pulsed signal modulators and pulsed switching generators. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>The BC546 is a bipolar NPN transistor used in electronics for switching and signal amplification, among other things. What else is the BC546 transistor used for? What electrical parameters does it have? Find out by reading our article!    <\/p>\n","protected":false},"author":21,"featured_media":94577,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,179],"tags":[],"class_list":["post-94580","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-elektronika","category-kompendium"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>BC546 - What is it? Technical data, schematic diagram - Botland<\/title>\n<meta name=\"description\" content=\"Read our article on: BC546 - What is it? Technical data, schematic diagram. 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