I am trying to understand the Vgs threshold on this datasheet. it says that the maximum is 1.45v but I have switched with 3.3 from a microcontroller. am i damaging the mosfet using this voltage?
Answer
Maximum voltages and other limit values are specified under "Absolute maximum ratings" usually: -
So the gate-source voltage should not exceed + or - 12 volts and, as a design recommendation I'd keep below +/- 10 volts. And, if you look at the forward characteristic of the device here: -
There is very little reason to go to a gate-source voltage beyond 5 volts. If you need that extra bit of conductivity with higher than 5 volt operation on the gate you should consider a better device.
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