This part of IEC 60747 specifies product specific standards for terminology, letter symbols, essential ratings and characteristics (properties), measuring and test methods, requirements for type tests, routine tests, endurance tests and marking for the following discrete semiconductor devices:
reverse blocking triode thyristors;
reverse conducting (triode) thyristors;
bidirectional triode thyristors (triacs);
turn-off thyristors.
If no ambiguity is likely to result, any of the above will be referred to as thyristors.
IEC 60747-6 Amd.1 Ed.3.0