Part Numbering - Fujitsu MB3793-42PNF-G-JN-6E1

What does the suffix E1, ER, G, JN or PNF call out in Fujitsu part numbers like MB3793-42PNF-G-JN-6E1

E1 = RoHS
ER = Right Facing T&R
G = Production level parts.
JN = Tube/Tray pack (in this case tube)
PNF = package type