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.
|Published (Last):||19 October 2007|
|PDF File Size:||11.81 Mb|
|ePub File Size:||3.82 Mb|
|Price:||Free* [*Free Regsitration Required]|
Top menu About Us Contact. Since transistor is of 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. Overall it is just another small signal transistor which is commonly used in switching and amplifying circuits.
Complete Technical Details can be found at the datasheet given at the end of this page. But it comes in a metal can package and can operate on voltages slightly higher than what a 2N can handle. Top menu About Us Advertise.
Here lets us assume the load here consumes around mA maximum so our collector current I C mA. Where h FE, is the current gain of the transistor which in our case 2n221 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.
Next Article Timer IC. Current Drains out through emitter, normally connected to ground. 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. Skip to main content. 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.
This resistor is connected to the base pin of the transistor 2m2219 limit the current flowing through the base. 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.
But this calculation will lead to the closest value to start with. In our case for a collector current of mA we have to pass a base current of 16mA. Current flows in through collector, normally connected to load.
2N2219 Bipolar Transistor
Another important thing to keep in mind, while using a transistor as switch is the base resistor. The 2N is a NPN transistor and is normally used as a switch in many circuits.
This stage is called Saturation Region. 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. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around mV.
2N Transistor Pinout, Specs, Equivalent & Datasheet
So to calculate the resistor value of the base we can use the formulae. The value of this current can be calculated by the required amount of current that will be consumed by the load. So the value if R B will be. 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.
To make this current flow through the transistor the value of base current I B can be calculated using the below formula:.