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So during one of my initial experiments I accidentally blew up one of my capacitors. Everything else works on the board except the motor control with the blown capacitor so I'm going to replace it. Now I know it's an SMD and its capacitance is 47 µF, I'm going to assume that the "H" marks it as a 50 VDC on its voltage rating and it has a diameter of 6.3 mm as measured with my caliper. I can't find anything that read the exact same as what is on the capacitor shown, does that matter or does only the capacitance and voltage rating matter? [assuming my idea of the voltage rating being 50 VDC is correct]

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    $\begingroup$ Wouldn't this question attract more attention when posted on EE.SE? $\endgroup$
    – 0scar ♦
    Sep 24, 2020 at 6:35
  • $\begingroup$ What did you do to blow that cap? It seems likely that anything you could do to blow a cap would damage other components also. $\endgroup$
    – DoxyLover
    Sep 24, 2020 at 7:26
  • $\begingroup$ Usually only the capacitance and voltage matter. And it has to actually fit on the circuit board of course. $\endgroup$
    – user253751
    Sep 24, 2020 at 13:00
  • $\begingroup$ I put 33 volts through my board like a dummy and it blew out the capacitor for the x controller and fried the motor control but that's an easy replacement as I have extra motor controllers. Only the x motor controller was affected by this overload. I checked all the other components with my voltmeter and everything else reads normal. $\endgroup$
    – LDF
    Sep 25, 2020 at 7:05
  • $\begingroup$ That capacitor is in parallel with all of the other motor capacitors. I think it is unlikely to be the culprit for that particular motor driver not working. Also, how do you blow up a 50V rated capacitor with 33V? $\endgroup$
    – Tom van der Zanden
    Sep 30, 2020 at 11:43

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