72 Mbit DDR II SRAM at 250 MHz – what it does
The CY7C1520KV18-250BZIT is a 72 Mbit synchronous DDR II SRAM organized as 2M × 36. It clocks at 250 MHz, delivering double-data-rate reads and writes on every clock edge — useful for high-throughput buffers in network switches, base stations, or test equipment where the bus can't stall. Supply range is 1.7V to 1.9V, which puts it in the 1.8V nominal SRAM family. The parallel interface means it connects directly to a memory controller without serialisation overhead, but the 165-ball LBGA footprint requires a multi-layer PCB for fan-out — not a two-layer board part.
This part is listed as Obsolete. If you have an active BOM line using this exact order code, a last-time buy or a pin-compatible drop-in from another vendor is not guaranteed — each replacement needs a layout and timing review.
Temperature grade and package – board-fit notes
The 165-ball BGA is not hand-solderable with a standard iron. Rework requires a hot-air station or reflow profile, and the board must have the correct ball pad diameter and via-in-pad if the design routes signals through the BGA escape.