Transient suppression for high-voltage DC rails
The 1.5KE530A: With a 451 V reverse standoff voltage and a 725 V clamping point at 2.1 A, it clamps transients on DC buses in industrial power supplies, inverters, and telecom rectifiers.
Clamping voltage and pulse current
Breakdown occurs at a minimum of 503.5 V, so the device stays transparent below that threshold. The 725 V clamp at 2.1 A peak pulse current means the protected rail sees no more than 725 V during a surge — the margin above the 451 V standoff determines how much overvoltage the downstream equipment must survive. The single unidirectional channel handles one polarity of transient; for AC or bidirectional lines, two devices back-to-back or a dedicated bidirectional TVS would be needed.
Package and temperature range
Housed in the DO-201AA (DO-27) axial-lead package, it mounts through hole — the leads are formed for through-board insertion, and the body is suited for point-to-point wiring or PCB mounting with lead bending.