1.5 kW peak pulse in a DO-214AB footprint
The 1.5SMC150A M6G: Packaged in a DO-214AB (SMC) surface-mount case, it suits general-purpose circuit protection where a single unidirectional channel is needed.
What the clamping voltage means for your rail
The 207 V maximum clamping voltage is the ceiling the diode holds the transient to — equipment on a 128 V nominal rail sees the surge clipped at 207 V, well below the typical 250-300 V abs-max of downstream components. The 1500 W peak pulse rating at 10/1000 µs means this diode absorbs a 1.5 kW surge for that duration; for shorter transients (e.g. 8/20 µs), the peak power capability is higher, but the datasheet's derating curve governs the actual margin.
