The BM50B-SRDS-G-TF(LF)(SN): The mated stack height is 6.3 mm, so budget that z-height in your enclosure or mezzanine design.
Peer Comparison: 50 vs 40 Positions
The BM50B-SRDS-G-TF (without the (LF)(SN) suffix) is electrically identical but may lack the RoHS compliance marking. For a RoHS-required BOM, the (LF)(SN) variant is the correct choice.
