What the part is and where it sits in the line
The ILE1F661S1878 is a Schneider Electric Lexium Integrated Drives II unit, a BLDC motor with onboard drive electronics and CAN interface on a single shaft-end package — the 'integrated drive' form factor that drops a servo into a machine without a separate drive cabinet. It carries the Lexium Integrated Drives II category designation (catalog line 18288), the Schneider positioning for compact, bus-networked motion axes where the motor and drive are sold as one replaceable assembly.
Lifecycle status — the headline finding
Schneider Electric marks this order code as obsolete on the official record — it has been withdrawn from current production, which is the single fact that drives the entire sourcing decision for anyone still holding a BOM line.
Sourcing posture for an obsolete Lexium unit
For an obsolete Lexium Integrated Drives II unit like this one, the supply channel is the independent distribution and surplus market — not the factory — and the part ships per the condition and traceability of the lot on hand at quote time, with availability and pricing confirmed against the RFQ. Single-unit package (1 piece) per the spec row, so order quantities beyond one typically draw from accumulated lot inventory rather than a continuous production run.