Automotive-grade surge protection in a DO-214AB package
The 1.5SMC100AHR7G: The AEC-Q101 qualification confirms it is screened for automotive-grade reliability — the -55°C to 150°C junction temperature range suits under-hood and chassis-mount environments where thermal cycling is severe.
The 137 V clamping voltage is the peak voltage the load sees during a surge; downstream components must survive this level for the pulse duration. The 11.4 A peak pulse current is the maximum surge the diode can sink at the 10/1000 µs waveform — if the expected transient exceeds this, a higher-power TVS or external series impedance is needed.