A diac is a type of diode that can conduct in both directions, unique from regular diodes, allowing it to function on either half of the AC waveform.
A diac is a type of diode that can conduct in both directions, unlike a regular diode which only allows current flow in one direction. Therefore, it can conduct on either half of the AC waveform, making option OC the characteristic of a diac. Additionally, a diac does not have a breakover voltage rating, unlike other components like a thyristor, so option A is incorrect.
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