90V rail protection, 400W pulse rating
The 400W peak pulse power rating means it can absorb repetitive surges within the device's thermal limits — useful for industrial power supplies, telecom line cards, and general-purpose DC bus protection where the rail sits at 90V. Because it is bidirectional, a single SMAJ90CA-13 protects both positive and negative transients across the line, saving board space compared to back-to-back unidirectional diodes. The DO-214AC (SMA) package fits standard pick-and-place assembly and reflow profiles; the operating temperature range from -55°C to 150°C covers industrial and automotive ambient conditions.