CD4093B: Part number differences between CD4093BE and CD4093BEE4 and part number difference between CD4093BF and CD4093BF3

Prakash Jain said:

Between CD4093BE and CD4093BEE4 what additional suffix E4 means for CD4093BE

This historically had a difference, but no longer does - these two are the same device. 

(1) [FAQ] Why does a logic device's part number have an E4/G4 suffix? - Logic forum - Logic - TI E2E support forums

Prakash Jain said:

Between CD4093BF3 and CD4093BF what suffix 3 means for CD4093BF

The "F3A" variant of CD4093BF3A has some additional quality checks during production, but the two devices are otherwise identical.