The Winbond W25Q128JVSIQ is a 128 Mbit (16 MB) SpiFlash® serial NOR flash organized as 16M x 8 in an 8-pin SOIC (0.209 inch, 5.30 mm wide body), supplied in tube packaging. It is a high-demand line item across the channel, which translates into availability and straightforward multi-source planning for this density and footprint.
Operating from 2.7 V to 3.6 V at -40°C to 85°C, the part clocks at 133 MHz and supports standard SPI, Dual/Quad I/O, QPI, and DTR. QPI moves the command phase onto the quad bus, and DTR samples on both clock edges, cutting the per-read protocol overhead that dominates latency in small random reads. Boot loading and in-field OTA updates both benefit. Program time is rated at 3 ms per page.
As the tube version of the SOIC-8 W25Q128, the JVSIQ is the natural choice for engineering builds, hand-loaded batches, and service inventory. For reel-fed SMT lines, order the W25Q128JVSIM TR, which uses the identical package and electrical characteristics.
In short, the JVSIQ is the ubiquitous 128 Mbit SOIC-8 flash: a proven footprint, a quad-plus-QPI-plus-DTR interface, a 133 MHz clock, and high channel stock. If you already build with the W25Q128 family, this part drops into the same pad layout. If your requirement is the same density in a smaller package, the 6 x 5 WSON variants (JVPIQ and JVPIM) cover that direction.