18V rail guard – 600W bidirectional TVS in DO-214AA
Its 29.2V clamping voltage at 20.5A peak pulse current (10/1000µs waveform) means the protected circuit sees a hard ceiling during a strike – budget that clamp voltage against the downstream device's absolute maximum rating, not the working voltage.
Active production – sourcing via RFQ
The bidirectional channel means a single device protects both positive and negative transients on a single line – no need for two diodes back-to-back.
No power-line protection – design for signal and DC rails
The SMBJ18CAE3/TR13 does not include power-line protection circuitry – it is a standalone TVS intended for DC power rails, signal lines, and low-voltage bus protection. For AC mains or high-energy surge paths, a separate MOV or gas-discharge tube is needed upstream.