Zener diode Identification needed

Semiconductor Discrete Semiconductor Products
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Here are the specs for the input power.

  • Power Supply: DC6.5-25.2V/USB5V
  • Power Consumption: 720mAat12V
    I plugged in 8v backwards and smoked it
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Hello, The part might be MMSZ4681 from Vishay.

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, Datasheet. Please see possible options from all similar manufacturers for the part here Single Zener Diodes | Zener | Diodes | Electronic Components Distributor DigiKey