Compare JFET with MOSFET.
Particulars
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JFET
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MOSFET
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1) Type
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Voltage controlled device
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Voltage controlled device
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2) Mode of operation
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Operates only in depletion mode
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Operates in depletion and enhancement mode
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3) Input impedance
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Higher
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Higher than JFET
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4) Characteristic curve
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More flat
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Less flat than FET
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5) Gate to source junction
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Only reverse bias
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Forward or reverse bias
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6) Gate connection
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Not isolated from substrate
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Isolated by SiO2 layer from substrate
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