Automotive-grade transient suppression for 12V/24V battery lines
The 1.5KE82H: It clamps transients on 48V to 66.4V nominal rails, making it a fit for 48V mild-hybrid battery systems or 24V truck/off-road power distribution where the steady-state bus sits below the 66.4V standoff voltage. The 13A peak pulse current rating at that clamping voltage tells you the surge the part can absorb before the junction temperature runs away.
The reverse standoff voltage is 66.4V — this is the maximum DC or peak-AC voltage the TVS can sit across without conducting appreciably. Above that, breakdown starts at a minimum of 73.8V. The DO-201AA axial package (DO-27 equivalent) is through-hole, which means the leads carry the heat into the PCB copper; a 2oz copper pour on each side of the mounting hole improves the thermal impedance for repetitive surge events.