Does any one know the difference between M29F040B-70K6 and M29F040B-70K6F?

[GBayl.1]

I cannot find any data on these and the part is obsolete

Thanks George

[Tesla DeLorean]

How it is packaged

Option Blank = Standard Packing T = Tape & Reel Packing E = ECOPACK Package, Standard Packing F = ECOPACK Package, Tape & Reel Packing

[GBayl.1]

Thank You