1500 W peak pulse in a DO-214AB footprint
The 1.5SMC150AHR7G: It clamps transients at 207 V max, with a reverse standoff of 128 V and a minimum breakdown of 143 V. The DO-214AB (SMC) package is the standard surface-mount footprint for this power class — the same pad layout used across the 1.5SMC family. Automotive-grade qualification to AEC-Q101 means this part is screened for the temperature range and reliability stress typical of under-hood and chassis electronics — -55°C to 150°C junction temperature, with the 1500 W rating holding across that band.
A downstream DC-DC converter or ECU input rated for, say, 200 V absolute maximum would need a higher-clamping TVS or additional filtering — this part is best matched to 150 V bus rails where the margin between standoff and clamp is comfortable. The 128 V reverse standoff is the continuous DC voltage the diode blocks without conducting — it is the normal operating rail. The 143 V minimum breakdown ensures the TVS does not avalanche during nominal line transients or ripple.
Active production and sourcing posture
AEC-Q101 qualification is the key compliance document for automotive buyers — it certifies the part meets the stress, temperature cycling, and PPAP requirements of the automotive supply chain. RoHS compliance is standard for the series.