Device identity and timing corner
The R1QAA7218ABB-20IA0 is a standard SRAM from Renesas Electronics organized 4Mx18 with a 0.45 ns access time — that sub-nanosecond window means it keeps pace with cache-line fills from high-speed ASICs or FPGAs without inserting wait states on the read cycle. Listed under the Interface & Transceivers category, this part is a synchronous or asynchronous SRAM core intended for data buffering and temporary storage in telecom line cards, test equipment, or embedded controller memory maps where deterministic read latency matters more than density.
Lifecycle and compliance read
RoHS non-compliant — the die-attach or lead finish does not meet the 2011/65/EU restriction. This matters for EU-market equipment shipped after the RoHS exemption expiry; legacy repair and mil/aero BOMs that require tin-lead finish are the natural fit.
Sourcing posture
The Active status means no imminent end-of-life risk, but the RoHS non-compliance limits the addressable market for new designs in regulated regions.