The 5-520315-3: The tin-plated phosphor bronze contacts and 25 mating cycles limit this to fixed or infrequent-service assemblies — not a high-cycle flex cable interface.
Board-fit and termination details
Through-hole mounting with a kinked pin termination provides a solderable anchor for the vertical, single-sided contact arrangement. Accepts FFC/FPC thickness from 0.13mm to 0.38mm — check your cable's stack-up against that range before committing the BOM line.
RoHS compliant, with the base product number 520315 for series-level documentation.