Advantages and disadvantages of transistors

Advantages and disadvantages of transistors
Advantages and disadvantages of transistors

The transistor is a three-terminal device made with a semiconductor material, it is also known as the basic building block of whole electronic technology. There are different types of transistors are available for various applications such as bipolar junction transistors (BJT), FET, JFET, MOSFET, IGBT, etc…

And the integrated circuits contain thousands of transistors, the transistors are been mainly used for amplification and switching applications.

Advantages of transistor

  • Low source voltage
  • High voltage gain
  • Smaller in size
  • It works at very low voltage ranges
  • Instantaneous action
  • They withstand mechanical vibration
  • Less expensive
  • Less power consumption
  • Low output impedance
  • They don’t need heating power to trigger
  • They need very less voltage to start the operation
  • They need a very simple circuit
  • We can test and verify its condition with a multi-meter
  • Noiseless operation
  • Less maintenance
  • We can easily integrate the multiple numbers of a transistor within a single integrated circuit.
  • The transistors are suitable for low-power and high-power applications circuits.

Explanation for advantages of transistor

Small size

The older model of the transistor is bigger, but before that size of the transistor dramatically decreases when applications increased.

Less expensive

The transistor components are less expensive, this is because most electronic circuits work with transistors.

Less trigger voltage

Most transistors need less voltage value to trigger start them, but some high-power transistors need a high voltage value to trigger start them.

Low power consumption

Generally, transistor devices consume less power in their operation, this is because semiconductor-based components like transistor need low power to operate and also works as amplifier or switches.

Noiseless operation

The main application of the transistor is in amplifier circuits, we know the audio-based amplification process removal of noise is an important thing to consider, but most transistor devices operate quietly.

Disadvantages of transistors  

  • Temperature dependency components
  • Lower power dissipation
  • Low input impedance
  • They produce low energy
  • The power transistor cannot operate safely above 15Hz switching frequency.
  • The damage due to thermal runaway
  • They had low reverse blocking capacity
  • The high switching frequency causes high power losses.
  • The transistors are been protected against high current and high voltage to prevent damage to the devices.
  • Sensitive to voltage stress
  • Soldering is a little bit difficult for small-sized components like transistors.
  • Manufacturing transistor is difficult
  • They had no-zero on-resistance
  • They are sensitive to radiation and cosmic rays
  • Electromagnetic interference will be spotted at transistors
  • They had a lack of lower harmonic distortion.

Explanation for disadvantages of transistors

Temperature dependency component

The transistor is a semiconductor material-based component, so naturally variations in the temperature will affect its operations.

Low power dissipation

Different types of transistors are available in the market for various applications, the packages used for the transistor actually indicate the power dissipation. Generally, transistors are devices which had lower power dissipation properties.

Thermal runaway

We know the transistor is sensitive to temperature variations, as when the temperature at the transistor increases towards a higher limit current at the transistor increases, this causes thermal runaway at transistors.

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