Is this fet logic level?

Using Arduino General Electronics
1

II have some buz 72a fets,would they be concidered logic level?
BUZ72A.pdf (241.2 KB)

2

No.

Gate threshold voltage is between 2V and 4V, so if you are unlucky and get one with a 4V threshold voltage it will hardly be on at 5V.

3

Hi, @m3vuv

image
image922×173 11.3 KB

The Vgs is the threshold voltage that the gate just starts to turn on the MOSFET, to get full turn on the voltage would have to be higher.
I agree with @PerryBebbington you could be lucky.

Make a test circuit and try the ability of 5V gate to give you a decently low ON resistance.

Tom.. :smiley: :+1: :coffee: :australia:

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4

No is a good answer but depending on your application these could still be used. For example, if the voltage you are switching is say 12 volts then you can use an opto-coupler (or other level shifting circuit) to drive the mosfet gate at the correct voltage, even from a 3.3v MCU. As always, this depends on the exact application to ensure you do not exceed the parameters specified in the data sheet.

1 Like
5

No.