The Infineon CY7C1520KV18-250BZXI is a 72 Mbit synchronous DDR II SRAM organized as 2M x 36, clocked at 250 MHz. That clock rate means the part can deliver back-to-back read/write transactions without dead cycles on the bus — the DDR II interface transfers data on both edges, so the effective data rate is 500 MT/s per pin. For a networking packet buffer or a high-speed cache line, that throughput keeps the pipeline fed without wait states.
Supply and temperature — the rail and the environment
No derating needed for industrial environments.
Package and footprint — 165-FBGA
Housed in a 165-ball FBGA measuring 13x15 mm (supplier device package 165-FBGA). It's a surface-mount BGA, so the board needs a multi-layer stack-up with via-in-pad or microvias to route the 36-bit data bus plus address and control lines. The Tray shipping medium is standard for this package — no tape-and-reel option listed, so plan for pick-and-place from a tray feeder or a tube adapter.