The Amphenol BERGSTIK® II 87900-148HLF is a 48-position, 2-row, unshrouded male pin header on 0.100" (2.54 mm) pitch — the standard grid for legacy and new board-to-board designs. It is a through-hole solder mount part, rated 5 A per circuit at 110 V, with 30.0 µ" gold over nickel on the mating surface and a black UL94 V-0 insulator. The 0.720" (18.29 mm) mating contact length and 0.120" (3.05 mm) post length suit it for mid-range stack heights where the mating receptacle sits on a parallel board.
A 24-position sibling (87900-124HLF) shares the same 0.100" pitch, 30 µ" gold finish, and 5 A rating — the difference is the number of circuits, which drives the board footprint length. For a 48-circuit BOM line, the 48-position version is the direct match; the 24-position would leave half the positions unloaded.
For RoHS compliance verification, the manufacturer's documentation should be consulted; the part is listed with a standard RoHS indicator on the product page.