Protection envelope and pulse rating
The 1.5KE530CA-TP: That 725 V clamp ceiling is the voltage the downstream equipment sees during a surge — keep it below the absolute maximum rating of the protected ICs. Reverse standoff is 450 V, meaning the TVS does not conduct appreciably below that rail voltage. Breakdown starts at 503.5 V minimum, so a 480 V bus stays within the safe window without nuisance triggering.
Automotive grade and temperature range
Listed as Automotive grade, this part carries the -55 to 175°C junction temperature rating required for underhood or high-heat environments. The 175°C Tj ceiling allows derating headroom in a 125°C ambient underhood compartment.
DO-201AE axial through-hole package. The body diameter and lead spacing match standard TVS axial footprints — no pad geometry surprises during layout. Bulk packaging: plan for hand-insertion or tube-fed wave solder.