0.50 mm pitch, 50-position vertical SMD
The 5019515000: It terminates to a 0.30mm-thick FFC or FPC with a straight or tapered cable end. The vertical orientation and SMD solder tails keep the assembly low-profile above the board at 0.159" (4.04mm).
Flip lock and tin bismuth contacts
The flip-lock actuator — brown polyamide (PA9T) glass-filled — secures the FFC without a secondary latch. The contacts are tin bismuth over copper alloy, rated 0.4 A per circuit at 50 V. That current ceiling is typical for 0.50 mm pitch signal connectors; don't plan on power delivery through this part.