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Recently I've been trying to fix a motor-controling board in my pool cleaner. After some measuring, I've figured out, that two MOSFETs are behaving strangely and their behaviour varies from the other two paires.

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Unfortunately I am unable to find the types and specs of the FETs. This is what is written on them:

  1. D409 BA6X17
  2. VNH38 ON 58 65NLG

Isn't someone familiar with these?

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The ON semiconductor device is a NVD5865NL: -

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The other device: -

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Looks like it has the Alpha & Omega Semiconductor symbol: -

enter image description here

I thinks it's the AOD409: -

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  • \$\begingroup\$ AOD -> Aodele -> Joy enters the house ? :-) \$\endgroup\$ – Russell McMahon Aug 12 at 22:32
  • \$\begingroup\$ Might that be Ayodele Mr. McMahon? \$\endgroup\$ – Andy aka Aug 12 at 23:15
  • \$\begingroup\$ Close enough, sir :-) -> Ayodelé. \$\endgroup\$ – Russell McMahon Aug 13 at 2:35

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