1500 W surge clamp for 36 V rails
The 1.5KE36A-E3/73: It clamps transients on a 30.8 V reverse standoff rail to 49.9 V maximum, shunting up to 30.1 A of surge current away from the protected circuit. The 34.2 V minimum breakdown voltage ensures the device stays transparent during normal operation but fires before the downstream silicon's abs-max rating is reached. This is a general-purpose TVS — not intended for power-line protection, but well-suited to DC supply rails, signal lines, and I/O ports in industrial and telecom gear.
Junction temperature and package constraints
The DO-201AA axial package requires a through-hole solder joint — the lead length and board copper area set the thermal impedance for repetitive surge events. The 1500 W rating is a peak pulse rating at a specific waveform; for repetitive transients, the average power dissipation must stay within the package's thermal limits. The axial leaded form factor allows the part to be mounted in a heatsink clip or soldered into a PCB with adequate copper pour for heat spreading.