Order in the next and choose twoday shipping at checkout. The 2n3904 comes in a to92 case with leads in the order c,b,e. In this circuit the base terminal of the transistor serves as the input, the collector is the output, and the emitter is common. The pto isnt putting out enough voltage to drive a mixer.
The transistor 2n3904 comes under the category of npn small signal, low power, general purpose transistor, mainly applicable for switching and for signal amplification. Oct 24, 2015 for general rf purpose around 250mhz use 2n3904 fast transistor, for audio use s9014 etc and for little more powerful audio etc, 8050 and 8550 are needed. In case youre curious about which to use, or which one is better or superior than the other, in this article, we compare and contrast the 2 transistors. Its dynamic range may include a current handling capability of more than 100ma for switching applications and a 100mhz frequency handling capacity fits with amplification purposes. This transistor is also available in the sot23 case. Pinning pin description 1 collector 2 base 3 emitter fig. The 2n3904 from multicomp pro is a through hole, npn silicon planar switching transistors in to92 metal can package. The 2n3904 is a common npn bipolar junction transistor used for generalpurpose lowpower. This small transistor is the counterpart of the 2n3906 transistor, which is a positivenegativepositive pnp transistor. And this resistor is going between the digital input and the transistor base, correct. The 2n3904 is a really common transistor that we use all the time and the 2n3906 is its pnp sibling. A 2n3904 transistor is a bipolar negativepositivenegative npn transistor, which means it is usually applicable to negative ground circuitry. Motorola order this document by 2n3903d semiconductor technical data general purpose transistors 2n3903 2n3904 npn silicon motorola preferred device collector 3 2 base 1. The transistor npn 2n3904 datasheet maximum thermal.
First, find the datasheet of the device you want to replace. The 2n3904 is common generalpurpose lowpower npn transistor used amplifying or switching applications. This kit is what you need to develop numerous different transistor circuits. This npn bipolar darlington transistor is designed for use in switching applications, such as print hammer, relay, solenoid and lamp drivers. Npn switching transistor 2n3904 features low current max.
This small transistor is the counterpart of the 2n3906 transistor, which is a positivenegativepositive pnp. 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. Jun 15, 2019 the transistor 2n3904 comes under the category of npn small signal, low power, general purpose transistor, mainly applicable for switching and for signal amplification. 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 figure 1. Hi ashwin, as others have pointed out, in most cases you can use a substitute for the 2n2222.
This item nte electronics 2n3904 silicon npn transistor for general purpose amplifier and switch, 200 ma, 40v pack of 5 mcigicm 200pcs 2n3904 npn transistor, 2n3904 bipolar bjt transistors npn 40v 200ma 300mhz 625mw to923. Replacement and equivalent transistor for the 2n3904. The bc547 has a bit more gain, and the reverse pinout, but should work okay. Semiconductor 2n3904 technical data feature npn silicon epitaxial planar transistor for switching and to92 amplifier applications as complementary type, the pnp transistor 2n3906 is recommended 1.
It may be used for audio signals as well as for mediumspeed switching applications. Find 2n3904 equivalent transistors related suppliers, manufacturers, products and specifications on globalspec a trusted source of 2n3904 equivalent transistors information. Does the use of bc547 and 2n3904 transistor interchangeable in a dark sensing cir i have two ldrs from solar garden lights. What im looking for is an ltspice model or schematic of a bufferamplifier circuit that uses a complimentary pair to get enough umph to the mixer.
For very high frequency rf you can find 9018 around 1. 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. Transistors expect you to know what current you need to correctly define the case. Howdy guys, i found the main problem with my dc receiver that uses a pto. Normally im a software guy, but i am trying to create a really cheap design for my dads model train club. Bc548, bc547 bc636, bc639, 2n2222a, 2n2222, 2n2369, 2n3055, 2n3906, 2sc5200 are equivalent of this transistor. The 2n3904 is a npn silicon rf transistor for audio amplifier and switching. It is a high gain but low power output and inverts signal output. Transistor equivalent electronics forum circuits, projects. You can replace the 2n3904 with the 2n4401, 2sc1008, 2sc1210, 2sc1211. The device is housed in the to92 package, which is designed for medium power applications. The 2n3904 is a common npn bipolar junction transistor used for generalpurpose lowpower amplifying or switching applications. If you are in a region where access to digikey or mouser or an equivalent supplier is difficult or impo.
It is housed in a to92 package for medium power applications. Dec 11, 2017 2n2222a 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. Schematic of very simple preamplifiers using 2n3904. It is typically used for lowcurrent, medium voltage, and moderate speed purposes. Base recommended this transistor is also available in the sot23 case with. As complementary type, the pnp transistor 2n3906 is recommended. Emitter amplifier applications as complementary type, the npn transistor 2n3904 is 2. On semiconductor shall own any modifications to the software. On that basis the 2n3904 is suitable for up to about 60mhz whilst the ss9018 will serve at over 200mhz. Complete technical details can be found at the 2n3904 datasheet given at the end of this page. The common 2n3904 npn bipolar junction transistor bjt is used for. Im looking for a smt npn transistor about the equivalent of the 2n3904, say in a sot23 package or similar. In daylight not sunlight they measure about 24k ohms which is not low enough to completely turn off the transistor, unless.
Transistor 2n3904 pinout and specifications homemade. Youll be notified as soon as this item is back in stock. An illustration of the pin out of a standard to92 package for digikey part number 2n3904fsnd. This wont be a problem so long as you are aware of the difference, and refer to the datasheet of the part you are using when wiring up the circuit. The 2n2222 is a metal case to18 with the different pinout, and is a bit higher power. This npn bipolar transistor is designed for high gain, low noise general purpose amplifier applications. Electrically similar transistors in a to92 package. Some equivalent transistors have the opposite pinout e,b,c and some are b,c,e. Check out the datasheet, see if you recognize any familiar characteristics. Nte electronics 2n3904 silicon npn transistor for general.
Npn transistor 2n3904 pinout electronics projects, electronics. In electronics, a common emitter amplifier is used as a voltage amplifier. Jul 23, 2018 the question is about the vbe voltage on the feedback transistor. Pricing and availability on millions of electronic components from digikey electronics. Youll be notified as soon as this item is on special or. This transistor features fast switching, short turn off and low saturation voltage hence is suitable for switching and amplification. Apr 29, 2020 a 2n3904 transistor is a bipolar negativepositivenegative npn transistor, which means it is usually applicable to negative ground circuitry. Transistor kit 10 value 200pcs npn pnp power transistor. But if you 2n3904 led 24 leds then that circuit 2n3904 led be able to power all of them. I have seen many circuits using the 2n2222 transistor correct me if it isnt one. For general rf purpose around 250mhz use 2n3904 fast transistor, for audio use s9014 etc and for little more powerful audio etc, 8050 and 8550 are needed. The original in a to92 package looks to go for under 10c in 1k volumes, which would be rather nice. Npn silicon transistor general small signal application auk corp.
1336 620 141 662 686 1071 1018 400 842 1130 420 27 382 228 334 778 1017 630 50 1416 1064 1252 1218 1203 631 661 1215 668 205 49 371 1350 313 776 684 1040 852 772 1073 367 1357 113