The SMCJ90CA-13: It protects general-purpose DC power buses, signal lines, and I/O ports in industrial controls, telecom equipment, and power supplies where a 90V reverse standoff matches the operating voltage.
Bidirectional clamping (one channel) protects lines that swing both positive and negative relative to ground, such as AC signal pairs or differential data lines, without needing two diodes back-to-back. Operating temperature from -55°C to 150°C covers the full industrial range and extends into under-hood automotive ambient — the junction can reach 150°C during a surge without derating the peak power.
Package and board integration
Housed in a DO-214AB (SMC) surface-mount package, the SMCJ90CA-13 reflows on standard lead-free profiles and mates with a copper pad area that conducts surge heat into the PCB plane.