Clamping voltage and breakdown margin
The 1.5SMC160CAHM3_A/H: Minimum breakdown voltage is 152 V, providing a 16 V margin above the 136 V standoff before the device starts conducting significantly. The 219 V maximum clamping voltage limits the voltage seen by the protected circuit during a 6.8 A peak pulse. Operating temperature spans -65°C to +150°C junction, covering the full automotive temperature range with margin for self-heating during repetitive surge events.
The SMC footprint is standard for 1500 W TVS diodes and mates with common PCB layouts for this power class. Single bidirectional channel means a single device protects both polarities — useful for AC signal lines or DC rails where reverse polarity is possible.