Clamp voltage and pulse energy — the fit decision
The SMBJ160A-13-F: The 259 V clamp at 2.3 A sets the voltage the downstream circuitry must survive — if the protected rail's absolute maximum is below 259 V, this TVS will not prevent overvoltage damage.
DO-214AA SMB — standard reflow assembly
The DO-214AA (SMB) surface-mount package uses a standard footprint shared across the SMBJ series, with the cathode band marking the unidirectional orientation. The package is compatible with reflow soldering; the tape-and-reel (TR) and cut-tape (CT) options suit both production and prototype quantities.
