![]() *This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information. If you position the transistor so that the side with the marking is directly in front of you, and the legs look down, then the legs will be located like this: the collector is on the. There are also equivalents in SOT-223 and SOT-23 (MMBT3904), they are marked as 1A. The company was acquired by ON Semiconductor in 2016 and its products and technologies continue to be developed and sold under the ON Semiconductor brand. The pinout 2N3904 will be considered in the TO-92 Package. The company was known for its innovation in the development of the first commercial transistor and for its contributions to the advancement of the integrated circuit technology.įairchild became a leading supplier of power semiconductors, analog and mixed-signal integrated circuits, and other semiconductor products. 2N3904 has a gain value of 300 this value determines the amplification capacity of the transistor. To get good and long term performance from this transistor it is suggested to not drive loads more than 100mA, always use a suitable base resistor, do not provide collector-emitter voltage more than 40V and always operate or store in temperatures above -55 centigrade and below +150 centigrade.Fairchild Semiconductor was a pioneering semiconductor company that was founded in the late 1950s. 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. ![]() When using as an amplifier it can be used in audio amplification stages, as an amplifier to drive small speakers, as an audio preamplifier and it can also be used in amplification stages of RF applications. 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.ĢN3904 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. The maximum collector current of the transistor is 200mA. 40V NPN General Purpose Transistor in TO-92, RoHS. It can be used in wide variety of electronic applications for switching and amplification purposes. View and download the latest Taitron 2N3904 PDF Datasheet including technical specifications. It is mostly used by electronic students and hobbyists in their projects, but it is also used in commercial electronic products. I currently have a 1k OHM transistor between the GPIO pin and the base of mh NPN transistor. Pricing and Availability on millions of electronic components from Digi-Key Electronics. I am planning on running a 12v 80mm fan on the 12v circuit that is activated by the GPIO through the VBE of the transistor. 2N3904BU Bipolar (BJT) Transistor NPN 40 V 200 mA 300MHz 625 mW Through Hole TO-92-3 from onsemi. It can be used in wide variety of electronic applications for switching and amplification purposes. 2N3904 is a widely used general purpose transistor. I have a 12v power supply that will run the fan and a NPN 2N3904 transistor as a switch on the ground side of the 12v circuit. 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. Max Storage & Operating temperature Should Be: -55 to +150 CentigradeĢN2222, S8050, 2N4401, BC537, SS9013 (Pin configuration of some transistors may different from 2N3904 therefore check pin configuration before replacing in a circuit)ĢN3904 Transistor Explained / Description:ĢN3904 is a widely used general purpose transistor.Minimum & Maximum DC Current Gain (h FE): 40 – 300 2N3904 is a commonly used NPN bipolar junction transistor (BJT) in electronic circuits for amplification and switching applications.Max Collector Dissipation (Pc): 625 miliWatt.The gate is separated from the body by an insulating layer (pink). Max Collector-Emitter Voltage (V CE): 40V Size comparison of bipolar junction transistor packages, including (from left to right): SOT-23, TO-92, TO-126, and TO-3 Metaloxidesemiconductor field-effect transistor (MOSFET), showing gate (G), body (B), source (S) and drain (D) terminals. ![]() Advertisements Features / technical specifications:
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