Logo
Select Quick Pages:
Home
About
Contact Us
Disclaimer
Privacy policies
Terms and conditions

A thyristor is basically

  • A thyristor is basically PNPN device.
  • A thyristor, also known as a silicon controlled rectifier (SCR), is a four-layer solid-state device that consists of three PN junctions.
  • These junctions are formed by alternately doping N-type and P-type semiconductor materials.
  • The four layers of the thyristor are labeled as P-N-P-N, which means it is essentially a PNPN device.
  • The two outermost layers of the thyristor are P-type, and the two inner layers are N-type.
  • The junction between the first P-type layer and the first N-type layer is called J1, and the junction between the second P-type layer and the second N-type layer is called J3.
  • The middle N-type layer between the two P-type layers is called the P-N-P or N-P-N junction, depending on the direction of current flow.