I am working on an Arduino project where am controlling a motor through one of the Arduino I/O pins. The motor has nothing special just a regular 3-5V motor. In my circuit am using a diode and a N-Channel MOSFET that has low Rds, The diode is 1N4001 and MOSFET is RFP30N06LE. Everything works! so far so good.

Now am making a PCB of my circuit and i don't want to use these THT components i would like to use SMT components/alternatives. To replace the 1N4001 diode i found S1-A and to replace the MOSFET i found PMV15UNEAR.

My question is simply, are the replacement components similar enough to control my 3-5V motor like how i had it working on the breadboard setup? if not do you know of any better choices.



1 Answer 1


There can be several good choices. As of now I think the selection you have done fair enough and should work.

  1. The new chosen diode had maximum Reverse voltage of 50 V Rating and it should be okay for a DC motor. If you have a chance, you can choose a diode with higher reverse Vorlage Rating.
  2. The \$V_{GS}\$ of chosen new MOSFET is even better than the previous one. It looks good as well, including the breakdown voltages. The current ratings I believe should be fine too.
  • \$\begingroup\$ thank you soo much really!!! i have been staring at this forum since my previous question for the past 36 hours hoping someone answers me with an informative answer such as yours! Thats good to hear i was worried these components might be bad choices! again thank you really. I will give it till tonight to see what others think as well :) \$\endgroup\$
    – Abdeen M.
    Commented Feb 22, 2020 at 10:13

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