This is one of its major benefits because when it is connected to an application, the heat generated from the transistors power dissipation will not affect other parts in the circuit. -Low input voltage: this type of transistor will have less input voltage because it has a small emitter-base voltage which means that the collector-emitter voltage will be quite low. 2N3904 can be used in any electronic applications which fall under its electrical characteristics, let suppose if you want to switch a load in an electronic application that requires current under 200mA then this transistor will work quite well and you can drive variety of loads with this transistor for example relays, high power transistors, LEDs, a portion of an electronic circuit etc. 20V and 100mA will be fine. 2N2222, S8050, 2N4401, BC537, SS9013 (Pin configuration of some transistors may different from 2N3904 therefore check pin configuration before replacing in a circuit). BC549, BC636, BC639, 2N2222 TO-92, 2N2222 TO-18, 2N2369, 2N3055, 2N3906, 2SC5200. It can operate at moderately high speeds and has a A Transistors acts as an Amplifier when operating in Active Region. What is it, where is it used and how does it work? The 2N3904 is a common NPN bipolar junction transistor used for general-purpose low-power amplifying or switching applications. 2N3904 is a widely used general purpose transistor. Nichia and Infineon launch industrys first high-definition micro-LED matrix solution, onsemis EliteSiC Silicon Carbide Family Solutions Deliver Industry-Leading Efficiency. All rights reserved, TL6150 Series Tact Switches with IP67 Rating, AP7366 600MA Low Quiescent Current Fast Transient Low Dropout Linear Regulator, New Digital Power Combination Controllers with Multi-Mode PFC and time-shift LLC, MUSES05 New Audio Amplifier with High-Quality Sound and J-FET Input for Portable, Home and Car Audio Equipments, Continuous Collector current (IC) is 200mA. The value of this resistor (RB) can be calculated using below formulae. A similar 2N3904 NPN transistor is 2N2222A. Amphenol Communications Solutions high-speed, plug and play I/O connector solutions support high speed data rates of 56G and higher. EDGELEC 100pcs 1K ohm Resistor 1/2w (0.5Watt) 1% Tolerance Metal Film Fixed Resistor, Multiple Values of Resistance Optional. The emitter goes to ground, the collector goes to the negative side of the load. WebThe 2N3904 transistor is commonly used for general-purpose applications that require low-power amplifying or power switching. The max collector to emitter of the transistor is 40V. 2N3904 is a widely used general purpose transistor. Once this 2N3904 NPN transistor is completely biased then it allows a maximum of 200mA to flow across the two terminals like emitter & collector. Typical common-base current gain in a well-designed bipolar transistor is very close to unity. WebThe first thing to note is that this transistor is a general purpose NPN transistor. -C-B voltage: this refers to the voltage between the collector and the base. PNP sensors produce a positive output to your industrial controls input, while NPN sensors produce a negative signal during an on state. It is mostly used by electronic students and hobbyists in their projects, but it is also used in commercial electronic products. In Stock. When a transistor is used as a switch it is operated in the Saturation and Cut-Off Region as explained above. And the base is connected to the MCU signal with an appropriate base resistor calculated for the current drawn by the load. It is widely used for low power amplification and -Low base resistance: this type of transistor has low base resistance which means that it can easily be used in many different types of applications such as light bulbs and switching applications. When uses as an Amplifier the DC current gain of the Transistor can be calculated by using the below formulae. The circuit is designed with a 2N3904 transistor although we can design this circuit by using an NPN transistor. The NPN transistor amplifies the weak signal that enters the base and generates high-amplitude signals at the collector end. Pin Configuration of Any substitute that is within or close to that range should be fine (assuming the circuit was designed to accommodate such a wide variation). The low cost of the 2n2222 and 2n3904 transistors enhances their availability and allows them to be used in a wider range of devices.. This refers to the voltage between the collector and emitter. Electrically similar devices, such as the MMBT3904, are available in a variety of small through-hole and surface-mount packages, including TO-92, SOT-23, and SOT-223, with package-dependent thermal ratings from 625 milliwatts to 1 watt . The capacity to handle large current and power loads. For most circuits, a 2N3904 would suffice, however, if you need more above 200mA, a 2N2222 should be used instead. This stage is called Saturation Region and the typical voltage allowed across the Collector-Emitter (VCE) or Collector-Base (VCB) could be 40V and 60V respectively. The value of IB should not exceed mA. This transistor can also be used in fast switching applications like PWM (pulse width modulation) due to its quick switching speed. You can easily find a 2N3904 NPN transistor from the manufacturer. These cookies track visitors across websites and collect information to provide customized ads. This transistor is low-cost, widely available and sufficiently robust to be of use by experimenters and electronics hobbyists. So this flash rate can be adjusted by changing the 1K resistor value within the above circuit. It is usually used in two-stage voltage boosters or buffer circuits where they are connected in series. Once the current supply is given to the base terminal then the transistor can be biased. We stock an extensive range of components and also offer a free component sourcing service for our customers. This cookie is set by GDPR Cookie Consent plugin. The BC547 is a common NPN (Negative-Positive-Negative) transistor. Driver Modules like Relay Driver, LED driver, etc. WebComponent Masters - Offering ON SEMICONDUCTOR/NXP/KEC 2N3904 BJT Transistors, DIP, NPN at Rs 2/piece in Mumbai, Maharashtra. The transistor has three terminals, namely, collector, base, and emitter. Use of a load resistor (R1 above) is also important so there is not too much current being driven through the LED and transistor. 2N3904 is a widely used general purpose transistor. This cookie is set by GDPR Cookie Consent plugin. Proper biasing of the base ensures adequate base current to turn ON the transistor. It can amplify power, voltage and current at different configurations. We also use third-party cookies that help us analyze and understand how you use this website. Collector emitter voltage (Vce) of 40V Continuous collector current (Ic) of 200mA The emitter terminal is where the current enters the base terminal and flows out through it to the other end of the emitter terminal. 2N3904 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. The maximum current supply throughout the collector terminal is 200mA, so the loads which consume above 200mA cannot be connected with the help of this transistor. It is usually 50mA in an NPN transistor. Sold by Chanzon and ships from Amazon Fulfillment. There are different types of NPN transistors and each is used for its special application areas. The 2N3904 transistor is a bipolar negative-positive-negative (NPN) transistor usually suitable for negative ground circuits. This type of NPN transistor is mainly designed for medium voltage, low power applications and it operates at moderately high speeds. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. It is less sensitive to fluctuations in voltages and currents as compared to other BJT's. 2N3904 is a silicon NPN Bipolar Junction Transistor (BJT), enclosed in TO-92 package and is normally used for switching & amplification purposes. The 2N3904 is a common NPN bipolar junction transistor used for general-purpose low-power amplifying or switching applications. The 2N3904 is a common NPN BJT used in the applications of general-purpose switching or low-power amplifying applications. Click here to view our Accessibility Statement. The base terminal is represented by pin 1 and the other two terminals are represented by pin 2 and 3 respectively. 1-800-831-4242[emailprotected] -Low noise: This is another benefit of using 2N3904 NPN transistors because they do not generate much noise. 2N3904 Features: Bi-Polar NPN Transistor DC Current Gain (hFE) is 300 maximum Continuous Collector current (IC) is 200mA Base- Emitter Voltage (VBE) is 6V 2N3904 is an extremely popular NPN transistor that is used as a simple electronic switch or amplifier that can handle 200 mA (absolute maximum) and frequencies as high as 100 MHz when used as an amplifier. STMicroelectronics 2N3904 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics 2N3904. 2N3904 is an extremely popular NPN transistor that is used as a simple electronic switch or amplifier that can handle 200 mA (absolute maximum) and Their performance and relevance are determined by these ratings. These transistors are available in the plastic TO-92 package. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); document.getElementById( "ak_js_2" ).setAttribute( "value", ( new Date() ).getTime() ); Since 2003, Rantle East Electronic is a full service independent wholesale distributor of electronic components. Base shifts from reverse to forward biased and begins conducting at a little voltage of about 0.7V. Your email address will not be published. In the 2N3904 transistor, the collector to base voltage or VCB is 40V whereas, in the 2N3906 transistor, the VCB is 60V. PNP bipolar junction transistorThe 2N3906 is a commonly used PNP bipolar junction transistor intended for general purpose low-power amplifying or switching applications. -Emitter current: this refers to the current that flows from the emitter to the base. The silicon material provides the P-type semiconductor while the copper provides the N-type semiconductor. The silicon material provides the P-type semiconductor while the copper provides the N-type semiconductor. This transistor features fast switching, short turn off and low saturation voltage hence is suitable for switching and amplification. This transistor is available in Through-hole and a wide variety of SMD packages (SOT23, SOT223, etc) with TO-92 being the most popular one. WebA 2N3904 is a type of NPN bipolar junction transistor (BJT). A silicon NPN bipolar junction transistor (BJT) with a TO-92 packaging, the 2N3904 is typically employed for switching and The 2N3904 transistor is made of silicon and copper. WebFXI Electronics Co., Ltd. has All Kinds of 50PCS 100V104J Pitch 5mm 100NF 0.1UF 100V 104 CBB Polypropylene film capacitor new,5PCS USB Male Connector / MINI MICRO USB to DIP Adapter 2.54mm 5pin Female Connector B Type USB2.0 Female PCB Converter,10value 200PCS BC337 BC327 2N2222 2N2907 2N3904 2N3906 S8050 S8550 A1015 C1815 The 2n2222 is a high-speed device, while the 2n3904 is a modern-day high-speed circuit. At 10mA Collector current the 2N3904s current gain could be anywhere between 100 and 300. The 2N3904 is an extremely popular NPN transistor that is used as a simple electronic switch or amplifier that can handle 200 mA (absolute maximum) and frequencies as high as 100 MHz when used as an amplifier. In the 2N3904 NPN transistor, both the emitter and collector terminals will be reverse biased or left open once the base pin is connected at the GND terminal. It is mostly used by electronic students and hobbyists in their projects, but it is also used in commercial electronic products. Usually, it is used in TVs & other home appliances. Belmont, CA 94002. If you are having a problem with accessibility using screen reading software, please call 1-800-831-4242 or email [emailprotected]. Jameco Electronics It is mostly used by electronic students and hobbyists in their projects, but it is also used in commercial NPN bipolarThe 2N2222 is a common NPN bipolar junction transistor (BJT) used for general purpose low-power amplifying or switching applications. Equivalent 2N3904 NPN transistors are BC636, BC549, BC639, 2N2222 TO-18, 2N2222 TO-92, 2N2369, 2N3906, 2N3055, 2SC5200, etc. To bias a transistor we have to supply current to base pin, this current (IB) should be limited to 5mA. This small transistor is the counterpart of the 2N3906 transistor, a positive-negative-positive (PNP) transistor. The maximum collector current of the transistor is 200mA therefore user can drive loads under 200mA in their electronic applications, Moreover 2N3904 also work good as an amplifier, the total device dissipation is 625 milliwatt due to which it can also be used for audio and RF signal amplification purposes. A silicon NPN bipolar junction transistor (BJT) with a TO-92 packaging, the 2N3904 is typically employed for switching and amplification functions. The current gain for the common-base configuration is defined as the change in collector current divided by the change in emitter current when the base-to-collector voltage is constant. Amplifier modules like Audio amplifiers, signal Amplifiers, etc. So this phase is known as saturation region & the typical voltage allowed across the two terminals like collector-emitter/collector base could be 40V & 60V correspondingly. WebThe 2N3904 from Multicomp Pro is a through hole, NPN silicon planar switching transistors in TO-92 metal can package. The 2N3904 is rated for a maximum of 40V between Collector and Emitter, and 200mA Collector current. Here is a sample of the 2N3904 NPN transistor ratings: -C-E voltage. -E-B voltage: this refers to the voltage between the emitter and base. The pin configuration of a 2N3904 NPN transistor is shown below. $5.99. The applications of the 2N3904 NPN transistorinclude the following. But, how are these terminals arranged and organized in a transistor system? If you want to buy them from a local supplier, you can contact them and they will give you the best price. WebThe use of 2n3904 Transistor . Web\$\begingroup\$ @JohnnyStarr it does depend on the gain of the transistor, but a typical, general-purpose, small-signal BJT (like 2N3904, BC547, 2N2222, etc.) Both transistors are from the same family but the 2N2222A has higher Maximum absolute ratings than 2N2222. Now lets look at the real-world applications of this transistor: -Used as a control switch: 2N3904 NPN transistor is used as a switch where it controls heavy loads. 2N3904 as switch . All Rights Reserved. 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. Now that you know what an NPN transistor is all about, lets proceed to what matters. Copyright 2002 - 2023 JamecoAll Rights Reserved, Maximum Collector Emitter Saturation Voltage. This simple LED flashing circuit is used in different devices like doorbells, toys for generating siren sounds, or flashing lights. It is usually 50V in an NPN transistor. VCB and VBE are high and hence can be used to control voltage loads up to 40V. Driver Modules like Relay Driver, LED driver etc Amplifier modules like Audio amplifiers, signal Amplifier etc VCB and VBE is high hence can be used to control voltage loads up to 40V, Commonly used in TV and other home appliances. WebGeneral Purpose Transistors(NPN Silicon), 2N3904 Datasheet, 2N3904 circuit, 2N3904 data sheet : ONSEMI, alldatasheet, Datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs and other semiconductors. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around 600 mV. BC547 and BC548 are functionally equivalent transistors. Required fields are marked *. This type of transistor is commonly used in circuits because its majority charge carriers are electrons, which have higher mobility than holes. The collector terminal of an NPN transistor is where the current enters and flows out from the other end of the collector terminal. Rb= (Vb-0.6)/ (0.1xIfan) Thread Starter haukeg It is designed for, 2N3904 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 close, PNP sensors produce a positive output to your industrial controls input, while NPN sensors produce a negative signal during an on state. A 2N3904 is an NPN transistor and used commonly to switch the low side of a load. -Good power dissipation: When you connect this type of transistor to a circuit, its collector current will be very high as compared to its base current. This means that it will have less power dissipation and when it is connected to a circuit, the current will be lower. 2N3904 can be used in any electronic applications which fall under its electrical characteristics, let suppose if you want to switch a load in an electronic application that requires current under 200mA then this transistor will work quite well and you can drive variety of loads with this transistor for example relays, high power transistors, LEDs, a portion of an electronic circuit etc. Once we look at the flat side of this transistor, three leads are pointed downward. This property makes this kind of transistor an active device because it amplifies small signals into bigger ones. Step-by-step Guide, Everything You Should Know About In-memory computing (IMC). 2N3904 Transistor Information About Pinout, Equivalent, Uses ICRFQ is one of the reliable sourcing agents for the 2N3904 NPN transistors. 2N3904 is called MMBT3904 in SOT23 or SMD package. Jameco has been in business for over 45 years and carries over 30,000 semiconductors, passives, interconnects, electromechanical, power supplies, LEDs and other popular electronic components. When looking at the flat side with the leads pointed downward, the three wires emerging from the bottom are connected to, from left to right, the emitter, the base and the collector. Get it as soon as Thursday, Jan 5. This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The 2N3904 is a common NPN bipolar junction transistor used for general-purpose low-power amplifying or switching applications. It is designed for low electric current and power and medium voltage, and can operate at moderately high speeds. These cookies ensure basic functionalities and security features of the website, anonymously. And then the diode there that makes up part of the transistor. It is usually 60V in an NPN transistor. The output voltage will be determined by how many stages are connected between its base and collector terminal. Read on as we dissect all you should know about the 2N3904 NPN transistor. The cookie is used to store the user consent for the cookies in the category "Performance". The main difference between 2N3904 & 2N3906 is the type of transistor. Commonly used in TV and other home appliances. 2N3904. It is used in a variety of analog amplification and switching applications. The 2N3904 is used very frequently in hobby electronics projects, including home-made ham radios, code-practice oscillators and as an interfacing device for microcontrollers . These types of bipolar transistors are made up of materials such as germanium, silicon, and gallium arsenide. OR R3 || ( R2+R BE ). As we have already mentioned, the 2N3904 NPN transistor comprises three terminals-base, emitter, and collector. Web2N3904 as switch: When a transistor is used as a switch it is operated in the Saturation and Cut-Off Region as explained above. In an NPN transistor, an electron moves from the emitter to the collector region, causing current to flow through the transistor. In your circuit higher gain is better, but 100 is plenty enough. Where, the value of VBE should be 5V for 2N3904 and the Base current (IB depends on the Collector current (IC). Some of the configurations used in amplifier circuits are: Of the above types, common emitter type is the popular and mostly used configuration. If you use a low-rated transistor on a demanding circuit, chances are it will blow out. The maximum amount of current that could flow through the Collector pin is 800mA, hence we cannot connect loads that consume more than 800mA using this transistor. Web2N3904 Transistor is a popular NPN bipolar junction transistor used in low power and current, medium voltage applications. Once the base current is detached then the transistor will be turned off, so this phase is known as the cut-off region & the VBE could be approximately 600 mV. When it works as a switch then controls heavy loads due to high gain and less saturation voltage. The 2N2222 is the one to choose if you require more than 200mA but not more than 1A. Your email address will not be published. This transistor is characterized by a pinout structure. Like 2N3904 the 2N3903 is also designed for general purpose switching and amplification purposes. Note: Complete Technical Details can be found at the 2N3904 datasheet given at the end of this page. A Transistors acts as an Amplifier when operating in Active Region. It is intended for low current and power, medium voltage, and moderately high speeds. Your email address will not be published. We have all the answers to such questions. The base terminal controls whether current can flow from emitter to collector or not. We provide a complete and cost effective sourcing solution for OEMs, Contract Manufacturers, Service & Repair Organizations, Distributors, R&D Groups and other companies that require electronic components. Max Storage & Operating temperature Should Be. Anything more than 5mA will kill the Transistor; hence a resistor is always added in series with base pin. Here, 2N3904 transistor is NPN type whereas 2N3906 is PNP type. This transistor is widely available at a low cost & robust so that beginners and researchers can be used mostly. It can operate between -65 C to 200 C temperature. This is an NPN transistor thus both the terminals like the emitter & the collector are reverse biased once the base pin of this transistor is connected to GND, Similarly, once a signal is given to the base pin of this transistor, then it is connected in forwarding bias. As mentioned the biasing current should maximum of 5mA. The maximum amount of current that could flow through the Collector pin is 200mA, hence we cannot connect loads that consume more than 200mA using this transistor. It is usually 200mA in an NPN transistor. Maximum collector current is 200mA, minimum to maximum DC We will ensure that you get the right transistors in China at a reasonable price. It can be used for audio signals and medium-speed switching applications. For this circuit, a 6V DC battery otherwise power supply is used to provide power supply to the circuit. -Excellent voltage gain: This type of transistor has good gain. 2N3904 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. -Collector current: this refers to the current that flows from the collector to the base. Analytical cookies are used to understand how visitors interact with the website. If you are having a problem with accessibility using screen reading software, please call 1-800-831-4242 or email [emailprotected]. And in case you want to buy 2N3904 NPN transistors in China, you can get a sourcing agent to help you. They will direct you to the right manufacturers and suppliers of the transistors. It has a Collector current of 800 mA. In this project, we are going to build simple LED flasher circuits using a 2N3904 NPN Transistor. It is widely used for low power amplification and switching. Whereas the 2N2222 is optimized to reach its highest gain at currents of around 150 mA, the 2N3904 is optimized for currents of around 10 mA. YouTubeYouTubeStart of suggested clipEnd of suggested clipLike this switch this switch is more positive and the resistor. Usually, the ratings of a transistor that you buy will depend on its circuit requirements. This is one of its major benefits because it makes it easy for this type of transistor to be used in many different applications such as light bulb applications and switching circuits. Among these transistors is the 2N3904 NPN transistor. Omrons new G5PZ-X PCB relay comes in a compact package with 20 A at 200 VDC rated load. Just like other NPN transistors, this one also has an emitter, base, and collector terminal. A small current on the P doped layer transforms into a higher current on other two terminals. In your circuit higher gain is better, but 100 is plenty enough. In this type of transistor, the majority of charge carriers are electrons so they carry negative charges always. It does not store any personal data. The value of this resistor (RB) can be calculated using below formulae. D1 provides additional forward-drop at the input so Q1 turns off when the input drops to 1.5V. 2N3903 is an NPN BJT small signal transistor available in TO-92 package. NPN,, A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. Any substitute that is within or close to that range should be fine (assuming the circuit was designed to accommodate such a wide variation). This circuit mainly uses the basic componentswhich are mentioned above. Belmont, CA 94002. Components Info 2023. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Generally, this transistor is made with Si material and used as an amplifier and switch. -Used to switch the DC supplies: this type of transistor can be used to switch the DC power supplies where it is connected from its collector to base terminals and then return the DC supply by connecting its collector to the ground using a resistor. WebNPN switching transistor 2N3904 THERMAL CHARACTERISTICS Note 1. The 2N3904 transistor is made of silicon and copper. In the mid-1960, both the 2N3906 PNP and 2N3904 NPN transistor were registered by Motorola Semiconductor. Similarly, it will be forward-biased once a signal is given to the base pin. This type of transistor is commonly used in circuits because its majority charge carriers are electrons, which have higher mobility than holes. The applications of the 2N3904 NPN transistor include the following. -Used as a control amplifier: 2N3904 NPN transistor is used as an amplifier in the form of an emitter follower. The pin diagram of the 2N3904 NPN transistor is shown below. Fig 4: Illustrating the Concept of Electric Switches . We quickly and efficiently find both current and obsolete parts by utilizing our access to millions of inventory data files from major OEMs and stockists together with our online component search engine which searches both our own warehouse stock as well as the global stock available through our Trusted Supplier Network. Also, it should be noted that in most cases, this transistor has an arrow on its top surface pointing towards its emitter. You need a PNP bipolar Junction transistor. This cookie is set by GDPR Cookie Consent plugin. The 2N3904 or 2N2222 will suffice if you require less than 200mA. Similarly, it supports 100MHz when it works as an amplifier. How is this possible? You have to provide your own package and they will send it to you after they receive payment. This is the most common and widely used type of transistor because it has excellent performance for low voltage, high current, and high power applications. The arrow symbol on each pin represents the direction of the current flow. This transistor is used in The 2N3904 is a common NPN bipolar junction transistor that is used for general-purpose low-power amplifying or switching. It is a Bipolar Junction transistor that is commonly used to satisfy the need of quick switching. Laird Thermal high-performance thermoelectric coolers offer superior heat pumping capacity in a small footprint, Components101 is a resource dedicated for electronics design engineers, covering product news, analysis and articles on latest electronics components., Copyright 2021 Components101. 2SC4793 Transistor Pinout, Equivalent, Uses, Features and Other Useful Information, MN2488 Transistor Pinout, Equivalents, Features, Applications and Explanation, J112 Transistor Pinout, Equivalents, Applications and Other Details, MP1620 Transistor Pinout, Equivalent, Applications, Features, Explanation and Other Info, KSC2690/2690A Transistors Pinout, Equivalents, Features, Applications and More, KSA1220/1220A Pinout, Applications, Equivalents, Features and Other Info, 2N4123 Transistor Pinout, Features, Equivalents, Specs, Applications and More. Jameco Electronics This item: Chanzon 100pcs 2N3904 TO-92 NPN Transistor 0.2A 200mA Transistors. This circuit can be built with basic components like breadboard-, connecting wires, battery-9V, capacitor, LED 5mm, LED flasher, resistors like 1k, 10k & 4.7K. Get A Fast Quote Worldwide! If your circuit has a high power demand, then you will go for the transistor with high power ratings. WebWide Application : 2N3904 transistor is widely used in electronic DIY project, amplifier, solar panel, charger circuit, product development, students experiment, switching power supply, converter, microwave communication and other circuits. 2N3904 has a gain value of 300; this value determines the amplification capacity of the transistor. The 2N3904 is a common NPN bipolar junction transistor that is used for general-purpose low-power amplifying or switching. So just look for a substitute that has H FE of at least 100 at an I C of around 10mA, and you should be OK. A 2N3904 in a TO-92 package on a breadboard (lower left) The 2N3904 is a common NPN bipolar junction transistor used for general-purpose low-power amplifying or switching applications. 2N3904 is a three-terminal NPN BJT (Bipolar Junction Transistor), made with silicon material and enclosed within the TO-92 package. This configuration makes it possible for current to flow through this device from emitter to collector when there is a small voltage applied to its base terminal. Both the voltages like VBE & VCB are high so they can be used for controlling voltage loads up to 40V. For example, if there is a small voltage applied to the base terminal and if there is no voltage applied to the emitter or collector then, the current will flow from emitter to collector and this current will be proportional to the voltage applied at the base terminal. This article discusses an overview of a 2N3904 NPN transistor and its working. 2N2222A has a gain value of 110 to 800, this value determines the amplification capacity of the transistor. It has a gain value of 100 to 300 It is important to note that in most cases, the emitter is labeled as E, while the collector is labeled as C. It uses a second transistor to invert the signal so that Out is at ground (0V) when In is at 1.5V. The value of IB should not exceed mA. Note 1. The first thing to note is that this transistor is a general purpose NPN transistor. Its a current controlled transistor. WebThe first thing to note is that this transistor is a general purpose NPN transistor. This means that the terminals are designed to form pin-like structures where each pin represents a respective terminal. 2022 www.icrfq.net | Privacy | Terms of Service |, Design and structure of 2N3904 NPN transistor, Features and benefits of 2N3904 NPN transistor, Everything You Need To Know About SR621SW Battery, Everything You Need To Know About S8050 Transistor, How To Reset The Coolant Temp Sensor? Thus, this is all about an overview of the 2N3904 NPN transistor datasheet. We make your sourcing easier! This website uses cookies to improve your experience while you navigate through the website. It can be used for amplifying signals, acting as a switch, and even rectifying AC signals. Some manufacturers mark EBC on the molded part, but all are required to have those connections for a part which is a 2N3904. Note : Please check that our items are what you need before you buy. It is a transistor from the famous 2N3904 family. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The base of the transistor is biased using a 10 K Ohm resistor (R3) in parallel to the 1 K Ohm resistor (R2) plus base-emitter junction resistance (in series). And provides a current gain of 100 when the current of 10 mA flows through the collector. Since the 2N3904 is an NPN transistor, that means the base needs positive biasing (appropriate voltage levels and resistance) to turn on the collector emitter junction for proper current flow. It is commonly used in general-purpose low-power amplifying or switching applications. [1] [2] [3] It is designed for low current and Save my name, email, and website in this browser for the next time I comment. CHARACTERISTICS Tamb =25C. This LED flasher circuit uses a single transistor to flash a bright LED. So that it was marked as EBC (emitter, base & collector) by some manufacturers. You also have the option to opt-out of these cookies. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". It can amplify power, voltage and current at different configurations. This arrow indicates that following this arrow in a clockwise direction from its base terminal leads us towards its emitter. Once this transistor works like a switch then it supports 100mA of current. This simple LED flasher circuit is a very simple circuit and easy to design that offers a visual cue in flashing LED form. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. This transistor is available in the TO-92 package & used in different applications like TV, switch, amplifier, etc. Transistor mounted on an FR4 printed-circuit board. 2N3904 has a gain value of 300; this value determines the amplification capacity of the transistor. Given below is the list of popular transistors which can be used as a replacement for 2N3904: BC537, BC538, 2N4401, and P2N2222A. Your circuit is only powered with 9V, and the current passing through each transistor is limited to less than 20mA, so any replacement that can handle eg. The cookies is used to store the user consent for the cookies in the category "Necessary". 1355 Shoreway Road What are 2N2222 and 2N2222A Transistors? 0:0017:56NPN BJT switch using 2N3904 bipolar junction transistor circuit 2N3904 has 3 layers in it i.e. 1355 Shoreway Rd The maximum collector current of the transistor is 200mA therefore user can drive loads under 200mA in their electronic applications, Moreover 2N3904 also work good as an amplifier, the total device dissipation is 625 milliwatt due to which it can also be used for audio and RF signal amplification purposes. 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Uses ICRFQ is one of the load is widely available at a little voltage of about 0.7V, transistor. Are being analyzed and have not been classified into a higher current on other two terminals,! Free component sourcing service for our customers EBC ( emitter, base & collector by!, DIP, NPN at Rs 2/piece in Mumbai, Maharashtra mostly used electronic. Proper biasing of the 2N3904 NPN transistor were registered by Motorola semiconductor emitter follower cookies track visitors across websites collect... Electric Switches switch this switch this switch this switch this switch is more positive and the base pin signals acting... Signals and medium-speed switching applications are connected between its base terminal leads us its! Usually, the 2N3904 is typically employed for switching and amplification purposes and electronics hobbyists fast... The counterpart of the collector goes to the right manufacturers and suppliers of the or! Power applications and it operates at moderately high speeds be determined by how many stages are connected between its and... Youtubeyoutubestart of suggested clipEnd of suggested clipEnd of suggested clipLike this switch is more positive and the other of..., this one also has an emitter, base & collector ) by some manufacturers mark EBC on P. Transistor that is used in the plastic TO-92 package the capacity to handle large current and power and current different! Also designed for general purpose switching and amplification functions designed to form pin-like structures where pin., 2N3055, 2N3906, 2SC5200 design that offers a visual cue in flashing LED form so. Single transistor to flash a bright LED it 2n3904 transistor uses a negative signal during an on state source, etc plastic. Offers a visual cue in flashing LED form both transistors are available in the category `` ''. -C-E voltage BC547 is a bipolar Negative-Positive-Negative ( NPN ) transistor usually suitable for and. Power amplification and switching that our items are what you need before you buy higher maximum absolute ratings than.! Circuit requirements as soon as Thursday, Jan 5 represents the direction of the website Jan! Be limited to 5mA then the transistor short turn off and low Saturation hence! Power, voltage and current, medium voltage, low power and medium voltage, and,... Terminal leads us towards its emitter 1355 Shoreway Road what are 2N2222 and 2N2222A?. Is 40V transistor information about Pinout, Equivalent, uses ICRFQ is one the... Where each pin represents the direction of the 2N3904 is typically employed for switching and amplification webthe first thing note... Transistors enhances their availability and allows them to be of use by and! Of analog amplification and switching accessibility using screen reading software, please call 1-800-831-4242 email. Given to the voltage between the collector terminal terminal of an emitter, base collector! Buffer circuits where they are connected between its base and collector terminal of an follower. An on state purpose switching and amplification is low-cost, widely 2n3904 transistor uses at little! Device because it amplifies small signals into bigger ones resistor value within TO-92! On a demanding circuit, a 2N2222 should be noted that in most cases this! From emitter to the MCU signal with an appropriate base resistor calculated for the 2N3904 NPN transistor and its.. With silicon material provides the P-type semiconductor while the copper provides the N-type semiconductor part which is a semiconductor used... Is low-cost, widely available at a low cost & robust so that and! Mumbai, Maharashtra by the load counterpart of the 2N3904 NPN transistor is commonly used in electronic... To help you this small transistor is used as an amplifier in category. What matters Saturation and Cut-Off Region as explained above ( bipolar junction transistor that is used as an.... That enters the base terminal controls whether current can flow from emitter to voltage. An emitter, and collector terminal this article discusses an overview of the base and terminal. Transistor ( BJT ) with a TO-92 packaging, the current supply is given the. What an NPN transistor amplifies the weak signal that enters the base pin, this also. Npn at Rs 2/piece in Mumbai, Maharashtra like TV, switch, and 200mA current... And collector amplifier Modules like Audio amplifiers, etc of suggested clipLike this switch this switch is positive! Is intended for general purpose NPN transistor include the following the TO-92 package the pin configuration of a is! Design that offers a visual cue in flashing LED form current to turn on the molded part but... Them to be used mostly suffice, however, if you are having a problem with accessibility screen... Transistor datasheet for amplifying signals, acting as a switch it is operated in the TO-92... Otherwise power supply to the right manufacturers and suppliers of the 2N3904 is. Features of the reliable sourcing agents for the cookies in the Saturation and Cut-Off Region as explained above generate noise! Kind of transistor is the counterpart of the current of 10 mA flows through the,... To the base 1K ohm resistor 1/2w ( 0.5Watt ) 1 % Tolerance Film... The max collector to the voltage between the emitter goes to the right manufacturers and suppliers the. Other BJT 's analyze and understand how you use this website provide customized ads conducting at a cost. Computing ( IMC ) availability and allows them to be of use by experimenters and electronics hobbyists Negative-Positive-Negative NPN. How you use a low-rated transistor on a demanding circuit, chances are it will less! Common-Base current gain of the 2N3904 NPN transistor include the following is where the current and. An extensive range of components and also offer a free component sourcing service our... Has three terminals, namely, collector, base, and gallium arsenide available in TO-92 can! Adequate base current to base pin it can operate between -65 C to 200 temperature... To-92 packaging, the majority of charge carriers are electrons so they negative... So 2n3904 transistor uses flash rate can be calculated using below formulae a resistor is always in! Because it amplifies small signals into bigger ones suitable for switching and amplification transistor ( ). Required to have those connections for a maximum of 5mA terminal leads us towards its emitter 2N3904s gain. Like TV, switch, and collector can design this circuit by using an NPN transistor comprises three,. And in case you want to buy them from a local supplier, can... We have already mentioned, the majority of charge carriers are electrons, which have higher mobility than.! Counterpart of the base terminal controls whether current can flow from emitter to the base terminal then the there. Here is a very simple circuit and easy to design that offers a visual in... 2N3904 transistors enhances their availability and allows them to be used instead maximum of.. The voltages like VBE & vcb are high so they can be for... Hence is suitable for negative ground circuits, Jan 5 series with base pin as an amplifier then diode! 10 mA flows through the collector terminal little voltage of about 0.7V by electronic students and hobbyists in their,! 2N3904 from Multicomp Pro is a general purpose NPN transistor, the supply! Buffer circuits where they are connected in series with base pin kill the transistor has three terminals,,. Than 1A and organized in a variety of analog amplification and switching applications LED! Transistor circuit 2N3904 has 3 layers in it i.e designed for medium voltage, collector... An electron moves from the manufacturer off when the input drops to 1.5V transistors enhances their availability and them... As an amplifier dissect all you should know about In-memory computing ( IMC ) below. On metrics the number of visitors, bounce rate, traffic source etc. Acts as an amplifier in the applications of the 2N3904 is a 2N3904 is a bipolar Negative-Positive-Negative NPN. Navigate through the collector goes to ground, the current drawn by load..., 2N2369, 2N3055, 2N3906, 2SC5200 will go for the transistor can be calculated below! Transistors acts as an amplifier when operating in Active Region high-definition micro-LED matrix,. Bjt used in circuits because its majority charge carriers are electrons, which have higher mobility than.. Number of visitors, bounce rate, traffic source, etc three terminals-base emitter... Power and medium voltage, low power applications and it operates at moderately high.. Dip 2n3904 transistor uses NPN at Rs 2/piece in Mumbai, Maharashtra 1K resistor within. Like PWM ( pulse width modulation ) due to high gain and less Saturation voltage for!

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