2N4403 - PNP Transistor
2N4403 is basically used when you want a simple switching device for low power loads. The component is cheap and easy to work with so it is best suited when choosing a random switching device. 2N4403 can also used as a basic power amplifier and its application include amplifying low power signals.
2N4403 can be used in any general transistor application circuits but for understanding the working let us consider a simple 2N4403 switching circuit as shown below.
In the above circuit we are using 2N4403 as a simple switching device and a small motor as the load. The small button here is for providing the trigger to the transistor and can be removed to leave simple contacts to touch. With the gain of the transistor a simple touch can trigger it. The 10KΩ resistor is for limiting the current to base and to avoid breaching maximum voltage allowed at the base. The 1KΩ resistor is for limiting the current flowing out of base to ground.
Features and Specifications
- Silicon planar epitaxial transistor
- Pb−free packages are available
- With DC Current Gain (hFE) up to 300
- Maximum voltage across collector and emitter: 40V
- Maximum current allowed trough collector: 600mA
- Maximum voltage across collector and base: 40 V
- Maximum current allowed trough base: 50mA
- Maximum voltage across base and emitter: 5V
- Operating temperature range: -55ºC to +150ºC
- Maximum power dissipation : 0.31 W
Tags: 2n4403 - pnp transistor, e1083, transistors, electronic components