Zener diode Identification needed

[user125]

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

[Jeff_2258]

Hello, The part might be MMSZ4681 from Vishay.

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