The 1.5SMCJ100A_R1_00001: That 162V clamping ceiling is what the downstream circuit sees during a surge event — it is the design constraint that confirms protection fit for any rail sitting below 100V standoff. The 1500W peak pulse rating sets the energy-handling ceiling for the transient event; size the surge waveform against it to confirm the part survives the application without derating below the datasheet curve. The wide TJ rating matters most when the clamping event dumps energy into the package — a tight thermal margin means the part trips faster and recovers cleanly without thermal runaway.
DO-214AB SMC — surface-mount fit for the BOM line
The cathode band marks the polarity direction on the unidirectional channel; verify orientation before reflow — a backward-mounted TVS presents reverse bias and will not clamp the intended transient.