1500W surge rating and clamping voltage
The 1.5SMC33CA-E3/57T: This surge rating means it can absorb transient energy up to 1.5 kW without failing — suitable for clamping voltage spikes on 24V DC rails or industrial control lines where the steady-state voltage stays below 28.2V. The maximum clamping voltage at peak pulse current is 45.7V at 32.8A. For a 28.2V nominal rail, the clamp triggers at 31.4V minimum breakdown and holds the line below 45.7V, protecting downstream components rated for 50V or higher.
DO-214AB SMC package and temperature range
The single bidirectional channel eliminates the need for two back-to-back unidirectional devices on symmetrical lines, saving board space and reducing BOM count.
Production status is Active. No pin-compatible alternative is listed on the evidence — the 1.5SMC33CA is the specific variant for 28.2V standoff with bidirectional clamping.