The 1.5SMC56CA-AU_R1_000A1: That 1.5 kW figure tells you how much transient energy the part can absorb in a single surge — it is the product of the clamping voltage (77 V max at Ipp) and the peak pulse current (19.5 A). The bidirectional channel means a single device protects both positive and negative transients — useful on AC-coupled signal lines or on a DC bus where reverse-polarity events are possible. No power line protection is built in; this is a pure transient suppressor, not a crowbar or a filter.
Automotive qualification and temperature range
Graded Automotive and qualified to AEC-Q101, this part is screened for the reliability and temperature demands of vehicle electronics — engine bay, body control, infotainment, or ADAS sensor power rails.