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Differentiate between SCR and IGBT.

written 6.9 years ago by sndeshpande.pvpp • 150

modified 2.7 years ago by sagarkolekar ★ 11k

power electronics

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written 2.7 years ago by Krishna_Agrawal • 2.7k

BASIS FOR COMPARISON	SCR	IGBT
Basic	Three terminal devices :- Anode, Cathode, Gate	Three terminal device :- Collector, Emitter, Gate. It is advantage combination of BJT and MOSFET.
Definition	SCR stands for Silicon Controlled Rectifier.	IGBT stands for Insulated Gate Bipolar Transistor.
Current Conduction Capability	Yes, Uni-Directional current Device	Yes, Uni-Directional current Device
Voltage Withstand Ability	Yes, but Bipolar voltage withstanding device.	Yes, Unipolar voltage withstanding device acquired from BJT and MOSFET.
Turn ON and Turn OFF	Applying signal at gate terminalbut can’t be turned off using same gate signal.	Both ON and OFF can be possible using gate signals.
Controllable Nature	Partially controllable.	Fully controllable.
Gate Signal Requirement	Pulse voltage is applied as control signal to turn ON then, no need of gate pulse.	Continuous gate signal is required to control the device.
Switching Loss	High loss because of low switching frequency.	Low switching loss than SCR but high switching loss than MOSFET.
Conduction Loss	Low Conduction Loss	Low Conduction Loss
Switching Speed	Low	Medium

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