Automotive-grade transient suppression for 12V/24V bus protection
The 1.5SMC16CAHR7G: Qualified to AEC-Q101, this part is specified for the -55°C to 150°C junction temperature range, covering under-hood and engine-bay thermal environments where reliability screening is mandatory.
The 22.5V maximum clamping voltage at 70A peak pulse current (10/1000µs) defines the voltage the protected circuitry must survive. For a 12V nominal rail, this clamp level is well below the typical 36V absolute maximum of downstream DC-DC converters and linear regulators, providing a safe crowbar during a surge event. The minimum breakdown voltage of 15.2V ensures the device does not conduct during normal 12V operation, yet triggers before the rail exceeds the safe operating area of sensitive ICs. The bidirectional configuration (single channel) means polarity does not matter during installation — the same part clamps positive or negative transients.
Package and board integration
Housed in the DO-214AB (SMC) surface-mount package, the 1.5SMC16CAHR7G occupies a standard footprint with a large cathode tab for thermal transfer. The package is rated for the full 1500W pulse without derating when the copper pad area follows the recommended layout in the datasheet. Supplied on tape and reel, it is compatible with automated pick-and-place assembly for volume production.