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What is a holding current for thyristors and triacs?

Latest Updated:04/01/2008

Question:

What is a holding current for thyristors and triacs?

Answer:

It is the minimum anode current that can hold the ON state of a thyristor or TRIAC when it is switched on by a gate trigger current.
The thyristor or TRIAC that has been once switched on is kept in the ON state if the holding current flows even if the gate current is stopped.
To switch it off, the anode current must fall below the holding current, or the anode must be kept negative (biased in the reverse direction) for some time.
Suitable Products
Diodes for Constant Voltage