(1) Classification by turn-off, turn-on and control methods
Thyristors can be divided into ordinary thyristors, bidirectional thyristors, reverse conducting thyristors, gate turn-off thyristors (GTO), BTG thyristors, temperature-controlled thyristors and light-controlled thyristors according to their turn-off, turn-on and control methods.
(2) Classification by pin and polarity
Thyristors can be divided into diode thyristors, triode thyristors and quadrupole thyristors according to their pins and polarity.
(3) Classification by package form
Thyristor can be divided into three types according to its packaging form: metal package thyristor, plastic package thyristor and ceramic package thyristor. Among them, metal-encapsulated thyristors are further divided into bolt-shaped, flat-shaped, round shell-shaped, etc.; plastic-encapsulated thyristors are divided into two types with heat sink and without heat sink.
(4) Classification by current capacity
Thyristors can be divided into three types: high-power thyristors, medium-power thyristors and low-power thyristors according to their current capacity. Generally, high-power thyristors are mostly packaged in metal shells, while medium and low-power thyristors are mostly packaged in plastic or ceramic packages.
(5) Classification by turn-off speed
Thyristors can be divided into ordinary thyristors and high-frequency (fast) thyristors according to their turn-off speed.