TVS Zener — 1500W surge clamp for 408V rails
The 1.5SMC480A-M3/9AT: The 1500W rating means it absorbs surges up to that level without failing — useful for protecting downstream silicon on industrial or telecom power buses where the steady-state voltage sits at 408V.
Package and field-fit
The supplier device package is DO-214AB (SMCJ), and it ships on Tape & Reel for automated pick-and-place. No power line protection (it is a standalone TVS, not a filter) — intended for general-purpose transient suppression on signal or DC power lines.
Active lifecycle — no last-time-buy pressure
Availability and current pricing confirmed at RFQ time.