H5TQ4G63EFR-RDC — SK hynix 4Gb 256M x16 DDR3

This part is the x16 EFR DDR3 device, not the H5TC DDR3L version. Use its 1.5V supply specification when reviewing a board-level requirement. A shared 4Gb density and 96-ball package do not make the low-voltage and standard-voltage families equivalent.

The C ordering option is commercial. H5TQ4G63EFR-RDI is a separate industrial option in the same ordering table; an RDI temperature rating must not be copied onto an RDC offer. Application names such as 'industrial repair' are not evidence of component qualification.

The EFR DDR3 operating-frequency table includes a note that RDC covers the lower PBC and H9C speed selections within the 1.5V H5TQ family. This is more specific than a general claim that every faster DDR3 device replaces every slower one.

Use that note as one input to an engineering review of the same base device and intended operating point. It does not waive pinout, power, temperature or controller checks, and it does not extend to a different density or to H5TC DDR3L. Record RDC as the part actually offered even when the original request lists a lower bin.