![]() Since a long time, the vacuum tubes are replaced with transistors because the transistors have more benefits over vacuum tubes. Transistors are small in size and it requires low energy for operation and also it has low power dissipation. The Transistor is one of the important active components (a device which can produce an output signal higher power than that in the input signal). ![]() Transistor is an essential component is almost every electronic circuit like: Amplifiers, Switching, Oscillators, Voltage Regulators, Power Supplies and most importantly, the Digital Logic ICs.įrom the time of invention of the first transistor to the present day, transistors are classified into different types depending either on their construction or their operation. The following tree diagram explains a Basic Classification of different Transistor types. The classification of transistors can be easily understood by observing the above tree diagram. Transistors are basically classified into two types. They are: Bipolar Junction Transistors (BJT) and Field Effect Transistors (FET). The BJTs are again classified into NPN and PNP transistors. ![]() The FET transistors are classified into JFET and MOSFET. Junction FET transistors are further classified into N–Channel JFET and P–Channel JFET depending on their construction. MOSFETs are classified into Depletion Mode and Enhancement Mode. Again, depletion and enhancement mode transistors are further classified into respective N–Channel and P–Channel. Types of TransistorsĪs mentioned earlier, on a broader scale, the major families of Transistors are BJTs and FETs. Irrespective of the family they belong to, all Transistors have proper / specific arrangement of different semiconductor materials. Commonly used semiconductor materials for manufacturing transistor are Silicon, Germanium and Gallium-Arsenide.īasically, the transistors are classified depending on their structure. ![]() ![]() Each type of transistors has their own characteristics, advantages and disadvantages. ![]()
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