Transient voltage suppressor, 28 V standoff, 600 W peak pulse
The SMBJ28CA-13: Its 31.1 V minimum breakdown voltage means it starts conducting just above the normal operating level, shunting the surge before it reaches the protected load. This clamping figure is the voltage the downstream circuitry must survive — a 28 V rail held to 45.4 V under surge gives a 17.4 V margin above nominal for the protected ICs.
Bidirectional clamping in a single DO-214AA package
Housed in the DO-214AA (SMB) surface-mount package, the device supports a -55 °C to +150 °C junction temperature range. The wide temperature envelope suits it for industrial or automotive ambient environments where the board sees thermal cycling.
Active production, sourced to order
The laser etch and date-code trace back to the authorized chain — no gray-market ambiguity on this line.