18. Diode Replacement

Question.8

A circuit originally uses a fast-switching diode.
That exact part is unavailable, so it is replaced with a standard general purpose diode that has the same voltage and current rating.

What is the main risk with this replacement?

The diode will not conduct current at all
The circuit may behave incorrectly when signals change quickly
The diode will permanently short the circuit
Diode switching speed does not matter if ratings match

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