What this synchronous ZBT SRAM brings to the bus
The Renesas 71T75602S100BG is an 18 Mbit synchronous SRAM organized 512K x 36, built on Zero Bus Turnaround (ZBT) technology. It clocks at 100 MHz with a 5 ns access time, meaning the memory can switch from read to write on consecutive clock cycles without inserting dead cycles — a feature that matters when every bus clock counts in a high-throughput pipeline like a network packet buffer or a DSP cache. Supply voltage is 2.375 V to 2.625 V. Temperature grade is commercial: 0 °C to 70 °C. This part is designed for indoor, controlled-environment equipment — servers, switches, test gear — not for a factory floor or outdoor cabinet.
Package and mounting — plan the PCB layout early
The 71T75602S100BG comes in a 119-ball PBGA measuring 14 x 22 mm. It is a surface-mount BGA. That is typical for BGA devices in engineering or low-volume production. For high-volume pick-and-place, confirm with your assembler whether they can handle tray-fed BGAs or need a tape-and-reel option (if available).
Lifecycle and supply — active, no LTB watch needed
The 71T75602S100BG carries an Active lifecycle status from Renesas. That means the manufacturer is still producing it, no end-of-life notice or last-time-buy window has been announced. For a BOM freeze or a new design, this part is safe from near-term obsolescence risk. No surplus or broker channel needed here.