Transient suppression with the 1.5KE220CA-E3/73
The breakdown voltage range starts at 209 V minimum, meaning the device begins conducting between 209 V and the clamping limit, shunting surge energy away from the protected load.
What the 1500 W rating means for your protection budget
The 1500 W peak pulse power is specified for a 10/1000 µs exponential waveform — this is the industry-standard test condition for TVS diodes per IEC 61000-4-5. The 4.6 A peak pulse current at that waveform means the device can handle a 4.6 A surge for 1 ms without exceeding the junction temperature limit. For shorter transients (e.g. 8/20 µs), the peak current capability is significantly higher, roughly scaling by the square root of the pulse width ratio. The clamping voltage of 328 V at 4.6 A is the voltage the load sees during the surge — a downstream component with a 350 V absolute maximum rating has 22 V of margin. If the load's abs-max is below 328 V, a lower-clamping TVS or a multi-stage protection scheme is needed.
Package and board integration
The axial leads suit point-to-point wiring, terminal block termination, or PCB through-hole mounting with a 0.100-inch lead spacing. The package body is epoxy molded, and the leads are solderable per standard wave or hand-soldering profiles.