600W Zener TVS for 10V Rails
The SMBJ10E3/TR13 is a single-channel unidirectional Zener TVS diode from Microchip Technology, rated for 600W peak pulse power (10/1000µs waveform). It clamps a 10V nominal rail at 18.8V max, with a minimum breakdown of 11.1V. The DO-214AA (SMB) surface-mount package fits standard pick-and-place reflow and is marked with the base number SMBJ10 for quick field identification.
Breakdown and Clamping for 10V Rail Protection
The breakdown voltage range starts at 11.1V, meaning the device begins to avalanche just above the rail. Clamping is specified at 18.8V max at the peak pulse current of 31.9A — that 18.8V ceiling is what the downstream circuitry sees during a surge. The 600W peak pulse rating is the energy-handling limit for a 10/1000µs pulse; for shorter transients the part can absorb more peak power, but the datasheet derating curve should be checked for repetitive events.