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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Complete Technical Details can be found at the datasheet given at the end of this page.
2N2219 NPN Transistor
Next Article Timer IC. Top menu About Us Advertise. Another important thing to keep in mind, while using a transistor as switch is the base resistor. 2n2129 flows in through collector, normally connected to load.
Overall it is just another small signal transistor which is commonly used in switching and amplifying circuits.
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. 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. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter.
Current Drains out through emitter, normally connected to ground.
2N Datasheet, Equivalent, Cross Reference Search. Transistor Catalog
However this vale will not be very accurate because the transistor will have an internal voltage drop across the collector current, so it mostly experimental to get the maximum current from the transistor.
But this calculation will lead to the closest value to start with. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and 22219 Base Emitter voltage could be around mV.
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 on. Where Vcc is the voltage on which the load operates and V BE is the voltage across the Base and Emitter which in our case according to the data sheet 1.
Here lets 2n22219 assume the load here consumes around mA maximum so our collector current I C mA. Since transistor is of NPN the load to be 2n219 should be connected to the collector and the emitter should be connected to the ground as show in the figure below.
Skip to main content. Top menu About Us Contact. This resistor is connected to the base pin of the transistor to limit the current flowing through the base.
2N datasheet – NPN Transistor, Package : TO
The value of this current can be 2h2219 by the required amount of current that will be consumed by the load. So the value if R B will be. 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.
This stage is called Saturation Region. But it comes in a metal can package and can operate on voltages slightly higher than what a 2N can handle. So to calculate the resistor value of the base we can use the formulae.
To make this current flow through the transistor n22219 value of base current I B can be calculated using the below formula:. In our case for a collector current of mA we have to pass a base current of 16mA.
The 2N is a NPN transistor and is normally used as a switch in many circuits. Where h FE, is the current gain of the transistor which in our case is