The SMBJ11CA-13: For a given transient, if the product of clamp voltage and pulse current exceeds 600 W, the TVS may fail short — derate for higher ambient temperatures per the manufacturer's curve.
Bidirectional Zener — one device, both polarities
This is a single-chip bidirectional Zener TVS — one channel, symmetrical breakdown in both directions. No polarity marking needed on the PCB; the device clamps positive and negative transients identically, which simplifies layout for AC-coupled signal lines or DC rails where reverse polarity protection is already handled externally.
DO-214AA SMB — reflow profile and board fit
Housed in the DO-214AA (SMB) surface-mount package, the SMBJ11CA-13 is supplied on Tape & Reel (also available as Cut Tape). The package footprint is standard for the SMBJ series — the same land pattern used for other Diodes Inc SMBJ parts.