Pulse power and thermal envelope
The 1.5SMC170CAHE3/9AT: The operating junction temperature range spans -65 °C to 150 °C, covering under-hood automotive thermal profiles and cold-crank conditions. The DO-214AB (SMC) package — also referred to as SMCJ — provides a surface-mount footprint with a large copper pad area under the cathode tab for heat sinking. The bidirectional configuration means a single device protects both polarities on a signal or power rail, simplifying BOM count on a 145 V bus.
