1500W TransZorb — what the ratings mean on the bench
The 1.5KE7.5HE3/54: That 1500W figure is the power the device can absorb in a single transient — it is not continuous. For a 6.05V reverse standoff, the diode stays off below that voltage; once the transient pushes past the 6.75V minimum breakdown, it starts conducting and clamps hard at 11.7V.
Field-replaceable axial package
The DO-201AA (DO-27) axial leaded package is through-hole — you can swap it on site with a soldering iron and a pair of cutters. No hot-air station, no reflow profile. The body is marked with the part number and polarity band, so orientation is clear even under a work light. The 1.5KE package suffix is the standard DO-201 footprint; it fits the same board holes as any 1.5KE-series TVS.
Obsolete — sourcing through independent channels
Vishay lists this part as obsolete. For a BOM that already uses this TVS, the board footprint and electrical ratings are fixed; a functional replacement would require a different order code and likely a different package, meaning a board spin.