I have a doubt about the function of the diode D6 shown in this schematic

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The schematic is for a battery management system and the diode is between the +,- terminals of the total voltage:

enter image description here

I do not know about that diode since I could not find its datasheet and I also looked for different diode symbols but no succeed, I guess it is a kind of schottky diode and it is to protect against reverse polarity when charging the battery pack.

Could somebody explain me please?


1 Answer 1


D6 is an TVS diode. It's an ESD supressor, as PACK+ signal is placed in the connector, it's susceptible to receive and ESD if someone touch the pin or something. For that reason, a TVS is placed to avoid damage other circuitry because of that event. It's a safety feature. Here is the datasheet of the diode if you want to have a look to it: https://eu.mouser.com/datasheet/2/115/DIOD_S_A0000285740_1-2541913.pdf ;)

  • \$\begingroup\$ Could I supress that diode from my schematic? since in the datasheet of the integrated circuit BMS it is not included in the typical application? \$\endgroup\$
    – imt_blake
    Commented Mar 21, 2023 at 14:58
  • 2
    \$\begingroup\$ Yes, you can. It does not add any funcionality and should not affect, unless you have an ESD event. \$\endgroup\$
    – Alber
    Commented Mar 21, 2023 at 15:15

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