Clamping a 25.6 V rail with 1500 W headroom
The 1.5SMC30CA: That power rating means it can absorb a single 36.7 A pulse up to the clamping voltage of 41.4 V without failing — useful for protecting a 24 V nominal bus against inductive load dumps or lightning-induced transients. Breakdown occurs at a minimum of 28.5 V, giving a 2.9 V margin above the standoff before the diode starts to avalanche. The bidirectional configuration means polarity doesn't matter during installation — one part covers both positive and negative transients on the same line.