What the 1500W pulse rating means for your board
The 1.5KE82CHE3/73: With a 66.4V reverse standoff voltage and a clamping ceiling of 118V at 12.7A, it protects 48V or 60V nominal rails from load-dump and inductive kickback transients — the clamp voltage sits well below typical downstream MOSFET Vds ratings in that bus range.
Package and mounting — DO-201AA axial
Housed in a DO-201AA (DO-27) axial-lead package, it's a through-hole part — hand-solderable and easy to probe.
Sourcing an obsolete automotive TVS
This part is marked obsolete by Vishay. For a new design, look at the active 1.5KE series variants from Vishay or a pin-compatible TVS from a second source in the same DO-201AA package — the 66.4V standoff and 1500W rating are common enough that a parametric cross is straightforward.