1500W surge clamp for 17V rails
The SMCJ17A-13-F: With a 17V reverse standoff voltage and a 27.6V clamping maximum at 53.3A peak pulse current, it protects a single 17V DC rail against transient overvoltage events up to that energy level. The 18.9V minimum breakdown voltage ensures the device starts conducting before the clamped voltage is reached, giving a defined trigger threshold. This is a standard TVS selection parameter: the standoff voltage must sit above the normal rail voltage, and the clamp voltage must stay below the downstream circuitry's absolute maximum rating.
Package and board-fit
Housed in the DO-214AB (SMC) surface-mount package, the SMCJ17A-13-F uses the large SMC body to dissipate the 1500W pulse without exceeding the 150°C junction temperature limit. The copper pad area on the PCB directly under the package sets the thermal impedance for repetitive surge applications. Supplied in Tape & Reel (TR) or Cut Tape (CT) formats, it suits both high-volume pick-and-place and prototype hand-assembly. The SMC footprint is shared across the SMCJ17 family, so a single board layout covers the full voltage range by swapping the TVS itself.
The wide range means the clamp voltage shifts slightly with temperature, but the 27.6V max at 25°C is the figure to use for worst-case circuit protection design. General Purpose application classification means no specific automotive or medical certification is attached to this variant — it is a standard commercial/industrial TVS for DC rail protection.