Triac are often used in high AC power control, they are able to switch in both parts of the AC waveform. This is a 600V 8A triac transistor.
Insulated-Gate Bipolar Transistor is a high efficiency and fast switching transistor. Since IGBT is a three terminal power semiconductor, it can be used as an electronic switch.
Power Transistors are transistors which can handle a lot more power in compared to BJTs. Similar to BJTs, the current flow between the collector and the emitter of is controlled by the current flow through the base.