The 2n3904 is an npn transistor that can only switch onethird the current of the 2n2222 but has. Difference between bjts and knowing which one to use. In one of my earlier posts we discussed regarding a few low signal type of transistors like bc547, bc557 etc. It is designed for low to medium current, low power, medium voltage, and can operate at moderately high speeds. Q1, the 2n2222 or 2n3904, is a general purpost npn transistor. Free packages are available maximum ratings rating symbol value unit collector emitter voltage bc546 bc547 bc548 vceo 65 45 30 vdc collector base voltage bc546 bc547 bc548 vcbo 80 50 30 vdc emitter base voltage vebo 6. 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. It can control only one third of the current of 2n2222. I want to clarify whats the different between them. If you are using for some basic laboratory experiment for experimental purpose then it is assumed that the voltages are not that high.
Figure 6 is an example night light circuit using a pnp transistor. I havent see a programmer that build with 2n2222 all jdm types using bc547. For the two transistors available in the lab, the nominal parameter values for these equations are. 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.
The collector current is the amplified current that flows from the emitter terminal to the collector terminal to power on a load that may be connected to the transistor. So far, ive tried c1815, and 2n3904 pdf datasheets linked. Oct 06, 2018 2n2222, 2n3904, 2n4401, bc337 pin configuration of some transistors are different from bc547, check pin configuration before replacing in a circuit bc547 is a general purpose bjt npn transistor mostly used in electronics hobbyists and educational electronics projects. How they differ is that the 2n2222 can handle greater operating collector current. Philips npn switching transistors,alldatasheet, datasheet, datasheet search site for electronic.
I didnt have that one, but a small assortment of others. The 2n3904 is a common npn bipolar junction transistor used for generalpurpose lowpower amplifying or switching applications. However, stmicroelectronics assumes no responsib ility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. As compared with 2n2222 it shows forward gain at lower current. It is designed for low to medium current, low power, medium voltage, and can. On that basis the 2n3904 is suitable for up to about 60mhz whilst the ss9018 will serve at over 200mhz.
Npn general purpose amplifier switch requiring collector currents up to 500ma. Electroharmonix have reissued their original lpb1 and made the easiest boost you can find. The 2n2222 transistor is subdivided into one group according to its dc current gain. Bc546b, bc547a, b, c, bc548b, c amplifier transistors npn silicon features pb. Discussion in homebrew and kit projects started by kd2ixs, nov 30, 2015.
If the 2n3904 was driving the relay ok, the bc337 should work fine with no other changes. One most excellent reference is the pdf version of todd gales nowdefunct website. Complete technical details can be found at the 2n3904 datasheet given at the end of this page. Jameco part number 787536 2004 fairchild semiconductor corporation rev. The major functional area of 2n2222 is enclosed in to18 package. I use 2n3904 because it was my first bjt and i have plenty of them. Free devices maximum ratings ta 25c unless otherwise noted characteristic symbol value unit collector. I am using these for logic gates for now just basic and, not, and am working on my own full adder. The 2n3904 is also an npn transistor with same characteristics like 2n2222 but with one difference. It is designed for low current and power, medium voltage, and can operate at moderately high speeds. Generally i find that the pn2222 is a slight improvement over 2n3904 but not enough to warrant stocking them in the lab here. Information furnished is believed to be accurate and reliable. The only numbers that count are the 2nxxxx numbers they specify the part completely, the other numbers seem to be added in the schematic as a reference designation i cant be sure without seeing the diagram. I have seen many circuits using the 2n2222 transistor correct me if it isnt one.
Besides these uses it can also be used in commercial circuits. Feb 06, 2014 the circuit is based on a npn transistor such as a 2n5088 for high gain booster or a 2n3904 low gain. Philips customers using or selling these products for. Texas instruments released a data sheet for their version of this part dated march 1973. Note that the 2n2222 2n2907 also pn2222 pn2907 transistors will safely handle 8 to 10 times as much current as the 2n3904 2n3906 transistors. You canuse it in several ways, boost your signal, overdrive your tube, etc i personally use this circuit at the end of an overdrive pedal for example to make a boost solo switch. It is designed for low current and power, medium voltage, and can operate at.
On special request, these transistors can be manufactured in different pin configurations. Does anyone know if the transistor 2n4401 and 2n2222a are similar, and if it. I do also wonder the same about other components, why 14 w instead of 1w or why 10v caps instead of 60v. Applications datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors. The ultimate advantage of power mosfet over power bipolar transistor jun 02, 20 for my. 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. The 2n3904 is a common npn bipolar junction transistor used for general purpose lowpower amplifying or switching applications. I havent experimented with transistors in circuits yet as a beginner, but i know how they work. Npn general purpose amplifier continued typical characteristics continued storage time vs collector current 1 10 100 5 10 100 500. Bc546b, bc547a, b, c, bc548b, c amplifier transistors.
All about 2n2222 transistor and its circuit diagrams. Apr 01, 2009 after comparing the spec sheets online and doing a little bit of googling, i found that pnp transistor 2n3906s characteristics and specs seem to fit pretty well with bc559 and bc548 fits fairly well with 2n3904 s. Since the 2n3904 and the 2n2222 have the same maximum vceo voltage, theres no difference in regard to this aspect. The 2n2222 is a common npn bipolar junction transistor bjt used for general purpose lowpower amplifying or switching applications. The 2n2907 is a commonly available pnp bipolar junction transistor used for general purpose lowpower amplifying or switching applications. It can be used for amplification of analog signals as well as switching applications. 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. But there are two important features that distinguish both.
Dec 11, 2017 the 2n2222a transistor is very much similar to the commonly used npn transistor bc547. The 2n3904 is an npn transistor that can only switch onethird the current of the 2n2222 but has otherwise similar characteristics. This article explains the main specifications, pinouts and application related information regarding the transistor npn bjt 2n2222, 2n2222a, and also its complimemtary pnp pair 2n2907 bjt. An illustration of the pin out of a standard to92 package for digikey part number 2n3904fsnd. For more information on this transistor, see the 2n3904 datasheet. Unit vcbo collectorbase voltage open emitter 2n2222. He gives a couple mods you can add to make it a treble booster. The 2n3904 and the 2n2222 are 2 of the most popular npn bipolar junction transistors in the electronics market. Free packages are available maximum ratings rating symbol value unit collector.
Our town is far away until i go there i have to bare with this 2n 2222. Motorola smallsignal transistors, fets and diodes device data. The 2n3904 exhibits its forward gain beta peak at a lower current than the 2n2222, and is useful in amplifier applications with reduced i c, e. This part number is available in a multitude of different voltage ratings.
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