Let's Discuss About Difference in between SCR/Thyristor and TRIAC

SCR/Thyristor

1) The SCR stands for Or full form is Silicon Controlled Rectifier.

2) The SCR/Thyristor has four terminal semiconductor device.

3) The SCR/Thyristor is unidirectional device.

4) The SCR/Thyristor is more reliable.

5) The SCR/Thyristor required two heat sink.

6) The SCR/Thyristor is available in large rating.

7) In SCR/Thyristor uni-junction transistor is taken in used for triggering purpose.

8) The SCR/Thyristor control D.C power.

9) In SCR/Thyristor there is only one mode of operation is possible.

10) The SCR/Thyristor can operate in only one quadrant V-I characteristics.

11) The SCR/Thyristor can be triggered by positive gate voltage only.

TRIAC

1) The TRIAC stands for triode for alternating current.

2) The TRIAC has three terminal semiconductor device.

3) The TRIAC is a bidirectional device.

4) The TRIAC is less reliable.

5) The TRIAC required only one heat sink.

6) The TRIAC available in smaller rating.

7) In TRIAC the DIAC (Diode for Alternating Current) is used for triggering.

8) The TRIAC control D.C as well as A.C power.

9) In TRIAC there is four different modes of operation is possible.

10) The TRIAC can be operate only in two quadrant V-I characteristics.

11) The TRIAC can be triggered either by the positive or negative gate voltage.

Hope you know the difference between SCR/Thyristor and TRIAC very well.

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