Definition
The maximum voltage a diode or rectifier can withstand in the reverse-biased direction without breaking down and conducting. If the applied reverse voltage exceeds this value, the component will fail, often destructively.
Plain English
The highest backward voltage a diode can handle before it gives up and lets current flow the wrong way. Go above that limit and the diode is usually ruined.
Context Anchor
Seen in aircraft electrical-system discussions, especially when checking or selecting rectifiers used in alternators, generators, and power supplies.
Derivation
Peak' means the highest point reached. 'Inverse' comes from Latin inversus, meaning turned around or reversed. So peak inverse voltage literally means the highest reversed voltage — the strongest backward push the diode can survive.
Why Pilots Care
Ensures diodes in rectifiers and power supplies do not fail under reverse voltage stress, protecting aircraft electrical systems from damage.
Intuition Check
Peak does not mean normal or average voltage here. It means the highest momentary reverse voltage the part must survive.
Example Sentence 1
The replacement diode must have a peak inverse voltage rating equal to or higher than the original to handle the alternator's reverse voltage spikes.
Example Sentence 2
During component inspection the technician confirmed the diode's peak inverse voltage exceeded the circuit maximum by a safe margin.