we could help to offer an alternative to our customers for part 24AA128-I/SN and 24AA128-I/SNG from Microchip with this equivalent IC EEPROM 128kbit I²C 8SOIC
M24128-BRMN6P and M24128-BRMN6TP from STMicroelectronics with DK# 497-8576-5-ND as faster option with 1 MHz max frequency, and fully backward compatibility to the older specification with up to 400 kHz only.
Please review the datasheets to ensure the alternative will work for your application.