Transistors are available in different ranges of power ratings and their selection depends on circuit's requirements. Now let's have a look at poewr ratings of 2N3904: Let's have a look at the equivalents of 2N3904 NPN Transistor:Īlthough common transistors such as 2N3904 are easily available in local/online electronics stores, but its wise to know the alternatives. Here's the link to download 2n3904 Datasheet: 
In order to get in-depth knowledge on any component, must read its datasheet.Let's have a look at the Datasheet of 2N3904: 2N3904 Pinouts alongwith their symbols are shown in the table given below.2N3904 Pin Diagram is shown in below figure:.used in televisions, home appliances, medium-load switches, PWM applications etc.
It has a wide range of applications i.e.Small voltage at base(around 0.7V) changes its state from reverse to forward biased and starts conducting.As it's an NPN transistor, so major charge carriers are electrons caryying negative charge.2N3904 is a silicon NPN Bipolar Junction Transistor (BJT), enclosed in TO-92 package and is normally used for switching & amplification purposes.TooGoo It also offers another pack somewhat cheaper and with 25 units of the 2n3904.It also has this pack of 50 units of the 2n3904.Transistors of multiple types, among which is the 2n3904. For example, here are some recommendations: To buy a transistor Of these characteristics, you can use the different services of stores specialized in electronics, or on platforms such as Amazon.
Emitter collector - saturation voltage less than 300 mV at Ic = 10mA. Joint operating temperature range: -55✬ to 150✬. Collector current for direct current: 200mA. If you wonder about the detailed features of this type of transistor, here are some of them: In addition to Motorola, it has been manufactured by many other companies such as Fairchild, ON Semiconductor, Semtech, Transys Electronics, KEC, Vishay, Rohm Semiconductor, Texas Instruments (TI), Central Semiconductor Corp, etc.Īs for the your pinout, you can see it in the previous image, that as is usual in transistors, you have three numbered pins leaving the rounded part of the package towards the back, that is, to interpret the drawing and match the one you hold in your hand now, you should put the flat part in front of you.
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