MELSEC A Series Expansion Module
The Mitsubishi AJ-65SBTC4-16D is a digital input expansion module for the MELSEC A series PLC system. It adds a block of input points to an A-series base unit, used in industrial control panels for machine or process automation. This part is in a mature lifecycle stage — it is an established, stable product still available through distribution channels, though it may be superseded by newer series like FX5 or L-series for new designs. For line-down replacements or BOM maintenance, sourcing via RFQ is straightforward.