What are the thyristor family?

The complete list of thyristor family members include diac (bidirectional diode thyristor), triac (bidirectional triode thyristor), SCR (silicon controlled rectifier), Shockley diode, SCS (silicon controlled switch), SBS (silicon bilateral switch), SUS (silicon unilateral switch) also known as complementary SCR or CSCR …

Why are thyristors important?

The primary function of a thyristor is to control electric power and current by acting as a switch. For such a small and lightweight component, it offers adequate protection to circuits with large voltages and currents (up to 6000 V, 4500 A).

What are the types of thyristors?

Kinds of Thyristors

  • Inverter Thyristors.
  • Asymmetrical Thyristors.
  • Phase Control Thyristors.
  • Gate Turn-Off Thyristor (GTO)
  • Light-Triggered Thyristors.

Why are thyristors only made of silicon?

Thyristors are usually manufactured from silicon, although, in theory other types of semiconductor could be used. The first reason for using silicon for thyistors is that silicon is the ideal choice because of its overall properties. It is able to handle the voltage and currents required for high power applications.

Is UJT part of thyristor family?

The characteristics of UJT are similar to those of a SUS. Its construction is, however, different and it does not belong to thyristor family.

Is UJT a thyristor?

Thyristors. The Unijunction Transistor (UJT)

What is an example of thyristor?

A good example of thyristor power control is in the control of electric lighting, heaters and motor speed.

Why is thyristor called a latching device?

It is like a tap that once turned on can not be turned off. It is this characteristic that allows thyristors to be used in a latching circuit, where a high voltage signal on the Gate is used to latch on the flow of electricity through the device.

Is Ujt a thyristor?

Why SCR is called thyristor?

Silicon Controlled Rectifier (SCR) is a unidirectional semiconductor device made of silicon. This device is the solid state equivalent of thyratron and hence it is also referred to as thyristor or thyroid transistor.

What is the symbol for a thyristor?


Type Active
First production 1956
Pin configuration anode, gate and cathode
Electronic symbol