The gate Voltage varies from lot to lot.? There are two numbers gate threshold
voltage and? Transconductance usually, in siemens.
The gate threshold voltage is in the range of 1.7 to 3V.? I tested 10 and most
were in the 2-3V range but at 2.5V some barely turned on and two were at 1.8A.
So max gate voltage will be under 4V and over 1V.? The variation is also seen
on commercial RF devices as wel.
The first the threshold voltage is the point when the MOSFET starts to conduct.
The second is basically the gain of the device and the ratio of gate voltage change
to drain current.
What it means is change the mosfet change the bias.? There is no fixed use this voltage
for a given drain current.
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Allison
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