What is a PNP Transistor?
The polarities of the PNP type of transistor are reversed which means that it sinks current into its Base as opposed to the NPN transistor which sources current through its Base.The main difference is there between the two types of transistors is that holes are the more important carriers for PNP transistors but electrons are the important carriers for NPN transistors.
The PNP transistors use also a small base current and a negative base voltage to control over a much larger emitter-collector current. In other words for the PNP transistors, the Emitter is more positive potential with respect to the Base and also with respect to the Collector.
The manufacturing of the PNP transistors consists of two P-type semiconductor materials in either side of the N-type material as shown below.
The manufacturing and terminal voltages for an NPN transistor are shown above. The PNP Transistor has also very similar characteristics to their NPN bipolar cousins and normal BJTs
Introduction to 2N4125
This is a special type of PNP transistor and it is made up of material Si (Silicon) and it has a wide range of use in the electronics projects. This PNP Transistor can be used as audio amplifiers and also can be used in high power amplification.
The above picture shows a physical description of the 2N4125 device.
2N4125 Features and Specifications
The various features and specifications of the 2N4125 are described below.
- The Maximum Collector Power Dissipation (Pc) of the device: 0.31 W
- The Maximum Collector-Base Voltage |Vcb| of the device: 30 V
- The Maximum Collector-Emitter Voltage |Vce| of the device: 30 V
- The Maximum Emitter-Base Voltage |Veb| of the device: 4 V
- The Maximum Collector Current |Ic max| of the device: 0.2 A
- The Max. Operating Junction Temperature (Tj) of the device: 135 °C
- The ransition Frequency (ft) of the device: 200 MHz
- The Collector Capacitance (Cc) of the device: 5 pF
- The Forward Current Transfer Ratio (hFE), MIN of the device: 50
- The package with which it comes with is: TO92
Pinout diagram of 2N4125
The pinout diagram of the 2N4125 is given below
From the above picture, it is seen that the use is very simple of this particular Transistor in any circuit.
Applications of 2N4125
The various applications of the 2N4125 are discussed below
- It is used as static switch in transistor circuits.
- It is also used as an amplifier in various electronics circuits.
- It is also used as audio amplifiers .
- It is also used in high power amplification purpose.
2N4125 Alternatives/replacement/substitute/complementary
The following transistors can also be used as a replacement to the
Conclusion
This is a special type of PNP Transistor and it is used for various type of circuit application like power amplification and rectification circuits.you can find them at UtSource.net at a very low price. So explore and buy at a very low cost and add your contribution to this never-ending electronics world.
