250 MHz DDR II SRAM — what the clock rate buys you
The Infineon CY7C1518AV18-250BZC is a 72 Mbit synchronous DDR II SRAM organized as 4M × 18. The 250 MHz clock delivers double-data-rate transfers on every edge, so the effective data rate is 500 MT/s per I/O. That throughput suits high-bandwidth buffer applications — network packet processing, test equipment capture memory, or FPGA-based data accelerators — where the bus must keep up without wait states.
For a BOM line that still needs this exact density and clock speed, the supply channel is the surplus and independent-distribution market.
165-ball BGA — layout and reflow notes
The package is a 165-ball LBGA in a 15×17 mm body. That is a fine-pitch BGA — typical ball pitch is 1.0 mm, but confirm the specific ball map from the datasheet before routing. For rework, the standard lead-free profile applies, and the moisture sensitivity level (MSL) should be verified on the bag label before baking.