1500 W pulse clamp in a DO-214AB footprint
The 1.5SMC43CA-E3/57T: Packaged in a DO-214AB (SMC) surface-mount case, this is the part you reach for when a 36 V rail needs a single-component clamp that handles a 1.5 kW transient without folding.
What the clamping number means for the board
The 59.3 V clamp at 25.3 A is the hard ceiling — any spike that exceeds this voltage forward-biases the diode into avalanche, and the 1500 W rating says the junction absorbs that energy without failing short. Bidirectional means a single part clamps both polarities — useful on AC-coupled signal lines or DC rails where the transient can swing positive or negative relative to ground. The DO-214AB (SMC) body is larger than the smaller SMA/SMB siblings, which means the copper pad on the PCB carries the heat from repeated pulses — the datasheet's thermal impedance curve assumes a 1 oz copper land pattern.