1500W peak pulse protection in a DO-201AA axial package
The 1.5KE6.8CHE3/73: The 5.5V reverse standoff voltage means it stays transparent on a 5V rail, only clamping when the line exceeds the 6.12V minimum breakdown threshold. The 1500W rating holds across this range with derating applied above 25°C per the datasheet curve.
Sourcing an obsolete automotive-grade TVS
Replacement sourcing relies on independent distribution inventory — each lot carries its own date code and traceability, which should be verified against the application's reliability requirements. For a BOM line that cannot tolerate a board spin, the DO-201AA footprint is shared across the entire 1.5KE series, so a parametric equivalent (same package, similar standoff and clamping voltages) can be qualified as a drop-in without layout changes. Confirm the reverse standoff and breakdown voltage range against the protected rail before substituting.