Transient protection for 36 V rails
The SMCJ36A-13: The 36 V reverse standoff voltage (VRWM) means it sits across the supply without conducting during normal operation, then triggers at a minimum breakdown of 40 V to shunt the surge to ground. That 58.1 V ceiling tells the downstream silicon what it must survive — any IC rated for 60 V or higher on that rail has margin below the clamp.
Package and board integration
Supplied in the standard DO-214AB (SMC) surface-mount package. The SMC footprint is the common body size for 1.5 kW TVS diodes — same pad layout as the SMAJ and SMBJ series but with a larger die cavity to handle the higher energy. Mounted with reflow soldering; the copper pad area under the cathode tab sets the thermal impedance for pulse derating. Operating temperature range spans -55°C to 150°C junction. No power line protection feature (the device is a standard Zener-type TVS, not a foldback or current-limited protector), so it is best suited for signal, data, and secondary DC rail protection rather than direct mains clamping.
Lifecycle and supply posture
It remains a current production item in the SMCJ36 family.