we could help to offer as alternative for the below parts request of 300pcs for our customers:
TDA7056AT/N2,518 / TDA7056AT/N2,512 from NXP –> obsolete without direct replacement
TDA7056AT/N2 from Ex-Philips Semiconductor –> where we are also out of stock
FAN7040MX as VOLUME CONTROL CIRCUIT following the same original specification from Fairchild Semiconductor being delivered as marketplace product from Rochester with DK# 2156-FAN7040MX-FSTR-ND.
Please review the datasheets to ensure the alternative will work for your application.