I've strapped a 6V zener diode across the 5V/GND rails of my circuit, and I want to know what will happen if my supply were to somehow fail pass 12V straight to the rest of my board.
The zener will definitely fry, but what happens afterwards? Can I say for sure whether the result will be a short or open circuit? Is there any way to ensure I get a short (thereby protecting the other components on the board)? I've learned all about diodes, but no one mentioned what happens after you fry one.
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