Which of the following is NOT valid as far as alternative names used for IGBT are concerned?

IGBT (Insulated Gate Bipolar Transistor)

IGBT is a semiconductor device that combines the characteristics of MOSFET and BJT (Bipolar Junction Transistor) to provide high efficiency and fast switching. Over time, several alternative names have been used to describe IGBTs, which are as follows:

• IGT (Insulated Gate Transistor): This is a generic term sometimes used to refer to IGBTs since they utilize an insulated gate structure like MOSFETs.
• COMFET (Conductively Modulated Field Effect Transistor): Another alternative name that describes the working principle of IGBTs, where conductivity modulation improves efficiency.
• GEMFET (Gain-Enhanced MOSFET): This term highlights the gain-enhanced feature of IGBTs due to their combination of MOSFET and BJT properties.

IGCT (Integrated Gate-Commutated Thyristor)

• This is not an alternative name for IGBT. IGCT is a separate semiconductor device, different from IGBT, used in high-power applications.
• IGCTs are enhanced GTO (Gate Turn-Off Thyristors) that operate with high efficiency in power electronics applications.