The 68046-309LF: The 0.100" pitch sets the board footprint — it's a standard grid that routes easily on two-layer boards.
30 µinch Gold Contacts — Mating Cycle Life and Environment Fit
No official cross-reference or successor is listed, so the 68046-309LF is the direct part for this footprint.
PPS Housing, UL94 V-0 — Thermal and Flame Rating
The insulator is glass-filled polyphenylene sulfide (PPS) rated UL94 V-0.