Clamping and breakdown — what the ratings mean for your rail
The 1.5SMC10AHM3_A/I: The minimum breakdown voltage of 9.5V gives a guard band before the device starts to avalanche.
DO-214AB SMC — package and board-fit note
Housed in the DO-214AB (SMC) surface-mount package, the 1.5SMC10AHM3_A/I has a standard footprint shared across the 1.5SMC family — the copper pad area under the cathode tab sets the thermal resistance for pulse dissipation, so the PCB layout should follow the recommended land pattern for the 1500W rating. The -65°C to +150°C junction temperature range covers under-hood automotive and outdoor telecom enclosures without derating the peak pulse power at the high end.
Sourcing and compliance
The device carries AEC-Q101 automotive qualification and is part of the TransZorb® series known for fast response time (<1ns) and low clamping factor.