1.5kW peak pulse protection in an SMC body
The 1.5SMC68CAHM6G: The peak pulse current rating of 17 A at that waveform means the clamping voltage of 92 V max is reached at a surge current the device is rated to survive without degradation.
Three voltage levels — and which one drives the design
Reverse standoff voltage is 58.1 V typical — this is the DC working voltage the protected rail can sit at continuously without the TVS conducting. Breakdown voltage minimum is 64.6 V — the TVS begins to clamp once the surge pushes the rail above this threshold. Clamping voltage maximum is 92 V at the rated 17 A peak pulse current — this is the voltage that appears at the load during a fault event and determines whether downstream circuits survive.
Automotive grade for the full temperature envelope
Junction temperature rating is -55 °C to 150 °C — this covers the engine-bay ambient band where many automotive protection circuits sit, and a 150 °C Tj ceiling gives margin against thermal runaway during repeated surge events. AEC-Q101 qualification means the device has passed the automotive stress suite — humidity, temperature cycling, and surge lifecycle — making it deployable in chassis and powertrain domains without a derating concern.
Active and sourced to order
Tape-and-reel packaging suits high-volume SMT line placement; confirm the MSL rating and dry-storage handling with the supplier before reflow if the reels have been stored long-term.