user37072: I’am using IRF520 mosfet according to this schema to shut down Arduino by low level on output to 10K ohms resistor
Schema of my device is

The issue is that IRF520 took too much place
Is it possible to substitute IRF520 with smaller mosfet?
Additional info:
I measured average power consumption – it’s about 22 mA on 12V = 0.264W
IRF520 is for 70W max according to datasheets.
The base schema is


user30005: For what you are trying to do, any transistor, bjt or MOSFET, would work. 2n2222 or 7000 for example. Irf5x0 is actually a poor choice here. It only worked due to the low load being switched.

37072: <p>I’am using IRF520 mosfet according to this <a href="https://www.zolalab.com.br/eletronica_projetos/auto_shutdown_enus.php" rel="nofollow noreferrer">schema</a> to shut down Arduino by low level on output to 10K ohms resistor</p>

<p>Schema of my device is<a href="https://i.stack.imgur.com/o4lK6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/o4lK6.png" alt="enter image description here"></a></p>

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<p>The issue is that IRF520 took too much place</p>

<p>Is it possible to substitute IRF520 with smaller mosfet?</p>

<p><strong><em>Additional info:</em></strong></p>

<p>I measured average power consumption – it’s about 22 mA on 12V = 0.264W</p>

<p>IRF520 is for 70W max according to datasheets.</p>

<p>The base schema is</p>

<p><a href="https://i.stack.imgur.com/1xkrv.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1xkrv.jpg" alt="enter image description here"></a></p>
 30005: <p>For what you are trying to do, any transistor, bjt or MOSFET, would work. 2n2222 or 7000 for example. Irf5x0 is actually a poor choice here. It only worked due to the low load being switched.</p>
