1500W peak pulse — what it means for your rail
The SMCJ40CA-13-F: That 1.5 kW rating means it can clamp a 40V nominal rail (44.4V breakdown min, 64.5V clamp max) by shunting up to 23.2A of surge current — enough headroom for a 24V or 36V bus in industrial or telecom gear where a lightning-induced transient or inductive kick would otherwise punch through downstream silicon.
A single bidirectional channel means the same device clamps positive and negative transients symmetrically — useful on AC-coupled data lines or power rails where the return path is not ground-referenced. No need to orient the part; the SMC package lands either way.
Package and board-fit — DO-214AB SMC
Housed in a DO-214AB (SMC) surface-mount package, the SMCJ40CA-13-F suits reflow assembly on standard FR-4. The SMC footprint is larger than the smaller SMA/SMB siblings — the extra copper area under the cathode tab helps spread the thermal pulse during a surge event. Supplied on Tape & Reel, it feeds into automated pick-and-place without manual handling.
The general-purpose application classification means no special screening — it is a standard off-the-shelf TVS for broad use.