What this Zener TVS handles and where it fits
Bidirectional protection (single channel) means it clamps both polarities with one device, simplifying layout on AC or bipolar signal lines.
The 500W peak pulse power rating (10/1000µs) is the energy the device can absorb in a single surge event. For a given line impedance, the clamp voltage of 165.1V at 3A sets the maximum voltage the protected circuitry sees. With a minimum breakdown voltage of 114V and a standoff of 91.2V, the 1N6132AUS leaves a 22.8V margin before the device starts conducting — enough to avoid nuisance triggering on nominal 90V rails. No power line protection means this part is intended for signal or low-power DC lines, not AC mains.
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The base product number is 1N6132; the 'AUS' suffix denotes the SQ-MELF B package variant.