Difference between thyristor and diode

Both of the device diode and SCR are semiconductor devices with considered as N and P types semiconductor layers. A diode has two terminal called has anode and cathode terminal but in Thyristor have three terminal known as anode, cathode and gate terminal. Both these devices have application dependent advantages. Now let us check it out information about the difference between thyristor and diode to know more details about it.
  • Thyristor has four layers of them whereas diode has only two layers of the semiconductor device.
  • The thyristor can be considered as a pulse-controlled diode in analysis time. 
  • The thyristor can operate higher voltage and current compared to the diodes.
  • Thyristor has there three P-N junctions but in case of a diode is a semiconductor having only one P-N junction.
  • Thyristor has three terminal known as anode, cathode, and gate while diode has two terminal known as anode and cathode.
  • Thyristor works only in one direction while the diode can work in both directions.
  • Power handling capacity is better for SCRs than comparing to other diodes.
  • Basic symbol of the SCR is derived by adding a gate terminal to the symbol of the diode.
  • A diode is a combination of two semiconductors while SCR is a combination of two transistors.
  • A diode is always conducting if the input is given to it but SCR doesn't show this property there is some method to turn ON or to turn OFF to the SCR.
  • The thyristor can be used high current and high voltage application like temperature controller circuit,  battery charging system and energy lighting system while diode can be used logic gates, overall voltage protection, radio demodulation, and power conversion