The 91615-325ALF: The mating contacts are plated with 30.0 µinch (0.76 µm) gold over phosphor bronze — a thickness that supports several hundred mating cycles in a clean environment, making it suitable for field-serviceable boards or test points. The solder posts are tin-plated at 2.00 µm (78.7 µinch), which is a standard finish for good solderability with lead-free processes.
Bottom or Top Entry Flexibility
The connector is listed as a receptacle for bottom or top entry — meaning the same part can be used as a bottom-entry (board-to-board) or top-entry (wire-to-board with a header) depending on the mating header orientation.
No official cross-reference or pin-compatible equivalent is recorded — the 91615 base product number defines the series footprint.