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High Electron Mobility Transistors (HEMTs)
March 23 , 2021
1687 days
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- The Indian scientists have developed a highly reliable HEMT from gallium nitride (GaN).
- This is the first-ever indigenous HEMT device.
- It is useful in electric cars, locomotives, power transmission and other areas requiring high voltage and high-frequency switching.
- It will also make India self-reliant in power transistor technology.
- This would reduce the cost of importing such stable and efficient transistors required in power electronics.
- It is a normally OFF device.
- It can switch currents up to 4A and operates at 600 V.
- HEMTs are used in integrated circuits as digital on-off switches.
- HEMT transistors are able to operate at higher frequencies than ordinary transistors, up to millimetre wave frequencies.
- HEMTs are used in high-frequency products such as cell phones, satellite television receivers, voltage converters, and radar equipment.
- They are widely used in satellite receivers, in low power amplifiers and in the defence industry.
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