Bipolar (BJT) Transistor NPN 30V mA MHz mW Through Hole TO The 2N transistor is very much similar to the commonly used NPN transistor 2N, but it comes in a metal can package and can operate on voltages. 7 May Sep 2. Philips Semiconductors. Product specification. NPN switching transistors. 2N; 2NA. FEATURES. • High current (max.
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2N2219 Bipolar Transistor
Top menu About Us Advertise. Since transistor is 22n219 NPN the load to be switched should be connected to the collector and the emitter should be connected to the ground as show in the figure below. Where Vcc is the voltage on which the load operates and V BE is the voltage across the Base and Emitter 2n22119 in our case according to the data sheet 1. In our case for a collector current of mA we have to pass a base current of 16mA. The value of this current can be calculated by the required amount of current that will be consumed by the load.
But it comes in a metal can package and can operate on voltages 2b2219 higher than what a 2N can handle. So the value if R B will be.
Current flows in through collector, normally connected to load. Current Drains out through emitter, normally connected to ground. So to calculate the resistor value of the base we can use the formulae. Where h FE, is the current gain of the transistor which in our case is The maximum amount of current that could flow through the Collector pin is mA, hence we cannot connect loads that consume more than mA using this transistor.
Here lets us assume the load here consumes around mA maximum so our collector current I 2n22219 mA. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter.
Complete Technical Details can be found at the datasheet given at the end of this page.
2N Datasheet, Equivalent, Cross Reference Search. Transistor Catalog
To bias a transistor we have to supply current to base pin, this current I B should be limited to 5mA by using a transistor to the base pin. Skip to main content.
The 2N is a NPN transistor and is normally used as a switch in many circuits. When base current is removed the transistor becomes fully off, this stage is called 22219 the Cut-off Region and the Base Emitter voltage could be around mV.
Top menu About Us Contact. As we know the transistor is a current controlled device meaning, we have pass some current I B thorough the base of the transistor to turn it 22n219.
2N datasheet – NPN Transistor, Package : TO
However this vale will not be very accurate because the transistor will have an internal voltage drop across the 2n2291 current, so it mostly experimental to get the maximum current from the transistor.
This stage is called Saturation Region. To 22n2219 this current flow through the transistor the value of base current I B can be calculated using the below formula:.
Overall it is just another small signal transistor which is commonly used in switching and amplifying circuits.
This resistor is connected to the base pin of the transistor to limit the current flowing through the base. But this calculation will lead to the closest value to start with. Another important thing to keep in mind, while using a transistor as 2nn2219 is the base resistor. So if you looking for an NPN transistor that could switch loads or for decent amplification then 2N might the right choice for your project.