I am using a IRF520N Logic level mosfet to control a dc motor with my Arduiono Uno. What types of DC Motors (i.e 20-24V) can I use without damaging the mosfet?

Datasheet: http://pdf1.alldatasheet.com/datasheet-pdf/view/68160/IRF/IRF520N.html

  • \$\begingroup\$ Brushless, brushed, realistically most types of DC motor. \$\endgroup\$
    – Andy aka
    Nov 18, 2016 at 20:13

1 Answer 1


V(BR)DSS (Drain-to-Source Breakdown Voltage) says 100V.

  • \$\begingroup\$ Correct but OP seems to be asking about types of DC motors in the 20-24V range rather than the IRF520 voltage- most confusing and IMHO its a shopping question. \$\endgroup\$ Nov 18, 2016 at 18:47
  • \$\begingroup\$ @JImDearden: shrug I just went by what the title says. \$\endgroup\$ Nov 18, 2016 at 18:48
  • \$\begingroup\$ Thank you all. I just wanted to know if I used a 20-24V Dc Motor if my Mosfet will not be damaged with giving that I will need to connect it in series to the arduino pin and 24v power supply. According to the datasheet i can add up to a 100V power supply? And that most current that will come out of the drain is 9.7A? \$\endgroup\$
    – AWL
    Nov 18, 2016 at 18:52
  • \$\begingroup\$ Fair comment - its very misleading \$\endgroup\$ Nov 18, 2016 at 18:53
  • \$\begingroup\$ @AlexLogorz "And that most current that will come out of the drain is 9.7A" doesn't make much sense. When using a fixed-voltage supply, the current flowing is a product of resistance or load, depending on which model you prefer. For example, a 50V 100W motor will (ignoring transients) pull 2A when supplied by a 50V fixed-voltage supply, because P=IV and thus I=P/V. Similarly, a circuit with a resistance of 25 ohms will pull 2A when supplied with a constant 50V, because V=IR and thus I=V/R. \$\endgroup\$
    – Polynomial
    Nov 18, 2016 at 18:59

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