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Infineon Technologies CY7C11681KV18-400BZC — Memory (DRAM / SRAM / Flash / EEPROM)

CY7C11681KV18-400BZC SRAM, 18Mbit DDR II+, 400 MHz, 165-FBGA

MPNCY7C11681KV18-400BZC
Obsolete

Infineon CY7C11681KV18-400BZC, SRAM - Synchronous DDR II+, 18Mbit, 1M x 18, 400 MHz, Parallel, 1.7V-1.9V, 165-FBGA (13x15), 0°C to 70°C.

Infineon Technologies CY7C11681KV18-400BZC datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C11681KV18-400BZC specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage1.7V ~ 1.9V
Clock frequency400 MHz
Memory interfaceParallel
Operating temperature0°C ~ 70°C (TA)
PackageTray
TechnologySRAM - Synchronous, DDR II+
Memory size18Mbit
Memory formatSRAM
Case165-LBGA
Memory organization1M x 18

Product details

The Infineon CY7C11681KV18-400BZC is an 18Mbit synchronous SRAM using DDR II+ architecture, organized as 1M x 18 and clocked at 400 MHz.

The supply range of 1.7V to 1.9V means this part runs from a nominal 1.8V rail.

165-FBGA (13x15) — footprint and rework notes

The 1.0 mm ball pitch is standard for this density, but the 13x15 mm body is larger than a typical 11x9 mm 165-ball — plan the keep-out zone accordingly. No lead-free finish is specified, so assume SnPb or matte tin — confirm with the date code if RoHS compliance is required.

Frequently asked questions

What is the replacement for CY7C11681KV18-400BZC?

No official replacement part number is documented by Infineon. For a new design, look for a current-production DDR II+ synchronous SRAM with 1M x 18 organization, 400 MHz clock, and 165-FBGA (13x15) footprint. The 1.7V to 1.9V supply rail narrows the field — most modern SRAMs in this density run at 1.5V or 1.8V nominal.

What is the difference between CY7C11681KV18-400BZC and CY7C11681KV18-400BZCT?

The suffix 'T' typically denotes Tape & Reel packaging instead of Tray. The silicon, speed grade, and footprint are identical. If your pick-and-place line is set up for reels, order the 'T' variant; for hand assembly or low-volume prototypes, the Tray version is fine.