Stud Blocking Diode

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  • Stud Blocking Diode for DC Systems
  • Stud Blocking Diode


Stud Blocking Diode

These are a must for solar panels or wind turbines that do not have diodes like DIY solar panels, or DC wind turbines, or hydroelectric generators.

Please note that it is necessary to mount this diode in an aluminum heat sink to keep it cool, otherwise it will burn out. We do not include the heat sink, however, you may easily make your own using any thin aluminum.


What size diode do I need?

Your diode needs to be somewhat larger than the current that is will be handling.


For solar panels, we sell the 3 Amp and 10 Amp diodes for this purpose. If your solar panel will not exceed 2 1/2 of amps of current, then the 3 amp version is fine. The 10 amp diode is acceptable for panels up to about 9 1/2 amps.


Solar panels with more charge current than this would require a larger diode (like the 40 amp diode). This larger diode can be placed in-line with the common positive wire coming from your solar panels to your charge controller to handle multiple panels at one time.


Please note: A larger diode may require a heatsink if it will be used for higher power applications (above 15 amps or so).


Looking for more information on blocking diodes? Click here to view our FAQ and installation diagram.

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