600W Zener TVS for 10V Rails
It clamps transients at 18.8V max when the surge current hits 31.9A, making it a fit for 10V DC power buses, signal lines, or low-voltage I/O that see repetitive surge events. Bidirectional construction means a single device handles both positive and negative transients — useful on AC-coupled lines or where the polarity isn't guaranteed. The DO-214AA (SMB) package sits on a standard surface-mount footprint; the junction temperature range spans -65°C to 150°C, so it survives cold-soak and hot-side environments alike.
Breakdown and Clamp Margins
Minimum breakdown is 11.1V, giving a 1.1V guard band above the 10V standoff. That gap prevents the diode from conducting during normal rail ripple or regulation tolerance. At the rated 31.9A peak pulse current, the clamp voltage hits 18.8V max — the downstream silicon must survive that ceiling for the pulse duration. Because this is a Zener-type TVS, the clamping characteristic is sharper than an avalanche diode — less voltage overshoot on fast edges. The 600W rating assumes a 10/1000µs waveform; derate for shorter or longer pulses per the datasheet's peak-pulse-power curve.
Microchip lists the SMBJ10CE3/TR13 as Active. No EOL notice or last-time-buy window has been issued.