Active TVS with 1500 W peak pulse rating
The 1.5KE200A-E3/73: The 171 V reverse standoff voltage means this part protects 170 V nominal rails — common in three-phase rectified supplies or industrial bus lines — without conducting during normal operation.
Clamping voltage and surge current
At the 5.5 A peak pulse current (10/1000 µs), the clamping voltage is held to 274 V maximum — this is the voltage the downstream circuitry must survive during a transient event. The 190 V minimum breakdown voltage provides a 19 V margin above the 171 V standoff, ensuring the TVS triggers before the protected rail exceeds its rating.
Through-hole axial package for board-level protection
Housed in a DO-201AA (DO-27) axial-lead package, the 1.5KE200A-/73 mounts through-hole — the leads handle the thermal pulse energy better than surface-mount equivalents for the same 1500 W rating. The single unidirectional channel clips positive transients above the breakdown threshold; for bidirectional protection on AC rails, two devices back-to-back or a bidirectional variant is needed.