Which one is not Junction Field-Effect Transistor.( )
A. pn JFET
B. MESFET
C. HEMT
D. bipolar transitor
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The internal pinch-off voltage Vp0 is the gate-to-source voltage to achieve pinch-off.( )
The ideal saturation drain current is independent of the drain-to-source voltage.( )
As frequency needs, power capacity, and low noise performance requirements,the high electron mobility transistor ______ fabricated from ______ .
The two breakdown mechanisms in bipolar transistor are ______ and ______ .