36V rail protection in a DO-214AA package
The SMBJ36E3/TR13 is a Zener TVS diode from Microchip Technology, rated for a reverse standoff voltage of 36V and a peak pulse power of 600W (10/1000µs waveform). It clamps transients to a maximum of 64.3V at 9.3A, making it a direct fit for protecting 36V nominal rails in industrial and telecom power supplies.
Clamping voltage and surge current limits
With a breakdown voltage minimum of 40V and a clamping ceiling of 64.3V at the rated peak pulse current of 9.3A, this part leaves a 4V margin above the 36V standoff before avalanche begins. The 600W peak pulse rating (10/1000µs) sets the energy-handling floor for the application's transient budget — a 24V system with a 36V TVS would not protect the rail, but a 36V rail with a 40V breakdown is safe.
Microchip lists the SMBJ36E3/TR13 as Active.
The single unidirectional channel is polarity-sensitive — confirm the circuit's DC bias direction before placement.
