25Q128JVSQ Winbond FLASH-NOR memory IC. Is an incomplete part number based on the datasheet from Winbond. The possible corrected part numbers are W25Q128JVSIQ and
W25Q128JVSJQ.
Page 74 of the datasheet lists the variations in this part number: https://www.winbond.com/resource-files/w25q128jv%20revf%2003272018%20plus.pdf