NPN Silicon Epitaxial Planar Transistor for. Switching and Amplifier Applications. • RoHS compliance. Mechanical Data. Case: SOT, Plastic Package. The 2N is a common NPN bipolar junction transistor (BJT) used for general purpose depend on the manufacturer, case type, and variation. Therefore, it is important to refer to the datasheet for the exact part number and manufacturer. PNA. SMALL SIGNAL NPN TRANSISTOR. PRELIMINARY DATA s. SILICON EPITAXIAL PLANAR NPN. TRANSISTOR s. TO PACKAGE SUITABLE FOR.

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Therefore, it is important to refer to the datasheet for the exact part number and manufacturer. Commercial transistors Bipolar transistors.

Note that the motor here draws about mA from the 12V power source, since the 2N has collector current rating upto mA this circuit is possible had it been a BC the transistor should have been burnt. Home Questions Transistlr Users Unanswered.

Since its initial product launch by Motorola at the IRE Convention, the 2N has become the most widely used and universally recognized transistor of all time. The situation worsen when all these china fake transistors crowded the whole market, there are datasbeet standardization at all. No other pin will show that.

The capacitors C1 and C2 are simply used for filtering purpose. The slightly lower of the two voltages will correspond to the collector-base junctionand the other will be the emitter-base junction.

By using this site, you agree to the Terms of Use and Privacy Policy. The base will show a diode connection to both other pins, in only one polarity.


The 2N exhibits its forward gain beta peak at a lower current than the 2N, and is useful in amplifier applications with reduced I ce. As the name suggests this resistor will limit the current flowing through the transistor to prevent it from damaging. I have used a base voltage of 5V and a value of 1K as current limiting resistor. Graf and William Sheets The resistor R1 is called the Base resistor and is very important to drive a transistor, it limits the base current and failing to use one might damage the transistor permanently.

When I apply a voltage between the pin 1 to 3, as soon as the voltage rises over about 8V, the current starts to flow, even when the base has no voltage pulled down or floatingand the transistors gets pretty hot. You can have up to 3 types of configurations. If I set up the circuit for a quick test, it seems that the datasheet or the transistor has the pins swapped.

PN2222A Datasheet, Equivalent, Cross Reference Search

It can be even worse, since the On Semi PN has the conventional pinout, despite being the same manufacturer and mostly same specifications: Normally this type of transistor will either be used as a switch or as an amplifier, both of which is discussed below.

Zuofu 3, 2 15 Retrieved 26 March Single transistors are also available in several different surface mount packages, and a number of manufacturers market surface mount packages that incorporate several 2Ntype transistors in one package as an array of transistors. I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA: The transistor will begin to conduct when the voltage across the Base and Emitter pin exceeds 0.


The exact specifications depend on the manufacturer, case type, and variation.

ST Microelectronics – datasheet pdf

Learn to keep an eye open for the following transistors, as they’re among the most useful, inexpensive, and popular types: One of the most default and primary function of a transistor is to act as a switch. The vales of the Resistor in the above image are only datsheet reference and are not accurate.

I am trying to figure out what is going on here. By using our site, you acknowledge that you have fransistor and understand our Cookie PolicyPrivacy Policyand our Terms of Service. In this type of circuit, the Emitter and the Base pin of the transistor should be commonly connected to a same voltage, so we have connected it to the Ground potential using two resistors R4 and R3.

It is used in a variety of analog amplification and switching applications. Would you like to answer one of these unanswered questions instead? Junkbots, bugbots, and bots on wheels: Applications General purpose NPN transistor Can be used to switch high current upto mA loads It can also be used in the various switching applications.

ST Microelectronics

Archived from the original on 14 April When this transistor is fully biased then it can allow a maximum of mA to flow across the dstasheet and emitter. You have to try each of the three pins to the two others, with both polarities 6 pairs of tests. Thank you for your interest in this question.