Capacitor in PSU wrong?

Discuss Yocto construction and related issues
  • SOM wrote:Hey,

    I am just sort all Parts from the Mouser Bom...
    Probably a beginner question :) The Building Guide says in the Powersupply that i need 1 680uf 35v capacitor...
    But in the BOM is a 680uf 25v capacitor.
    Can i use it anyway or would it be better to get a 35v version?

    thanks in advance!
    Sascha
    The power supply coming in to the board is 15v so 25v is fine. 35v gives you a bit more headroom for longevity.
  • Thanks! That was my first thought... but i was not sure :)

    one moore question maybe...
    In the Noise Section is the Capacitor C31 (50V1uf) But in the BOM is only a 50V 10uf .. hmm..
    or am i blind?
    can i use the 50 V 10uf ? i dont guess...or?
  • You shouldn't have a problem using a higher rated capacitor. Ideally in this case I would try and get hold of the 1uf 50v capacitor though.

    Rule of thumb for replacing capacitors:

    Never lower the voltage (unless if the voltage on the cap is far higher than the power line like your post)

    Only increase the capacitance but there can be a certain tolerance so 10uf should be fine but I'd go with 1uf as stated in the schematic.