1500W peak pulse — what the rating means for the board
The SMCJ14CA-13-F: The bidirectional channel (single device, both polarities) simplifies the BOM for AC signal lines or DC rails where the surge can swing positive or negative — no need to series two unidirectional parts.
Breakdown and clamping window
Reverse standoff voltage is 14V — the rail voltage the device leaves alone during normal operation. The 64.7A peak pulse current rating at 10/1000 µs tells you the device can handle a short-duration surge well above the continuous rail current — typical for lightning-induced transients or inductive load switching.