Obsolete — last-time-buy and replacement path
The 1.5SMC15AT3G: No official successor order code is recorded in the lifecycle data. For existing BOM lines, sourcing is through independent distribution channels where remaining stock or surplus lots are quoted per RFQ.
Board-fit and procurement reality
The DO-214AB (SMC) package is a standard JEDEC footprint — the same land pattern serves many 1.5SMC-series TVS diodes, so a board spin is not needed if the replacement shares the same package and pinout.