We do not currently carry the ESP-12F from AI-Thinker, however the following options are similar in function to the ESP-12F. There are links to each part below the table. Please review the datasheets to ensure the alternative will work for your application.
ATSAMW25H18-MR210PB Microchip Technology | RF and Wireless | DigiKey
ATWINC1510-MR210PB1952 Microchip Technology | RF and Wireless | DigiKey
MOD-WIFI-ESP8266 Olimex LTD | RF and Wireless | DigiKey
ATWINC1500-MR210UB Microchip Technology | RF and Wireless | DigiKey
MIKROE-496 MikroElektronika | RF and Wireless | DigiKey
ATWINC1500-MR210PB Microchip Technology | RF and Wireless | DigiKey
WYSACVLXY-XZ Kaga FEI America, Inc. | RF and Wireless | DigiKey
RN1810-I/RM110 Microchip Technology | RF and Wireless | DigiKey