50-Position D-Type Cap, 0.050 Pitch — Board-to-Board Signal Interconnect
The TE Connectivity 5173280-3 is a 50-position D-Type cap with male pins from the AMPLIMITE.050 I series. Designed for board-to-board signal interconnect, this through-hole solder connector uses a fine 0.050 inch pitch with 0.100 inch row-to-row spacing, giving you 50 signal lines in a compact D-shell footprint.
Fit Note: Mating Half and Layout
This cap mates with the matching AMPLIMITE.050 I receptacle (female socket side). The housing includes an unthreaded shell flange for panel or bracket mounting. With 50 positions in 2 rows at 0.050 inch pitch, the PCB footprint is dense — verify the board layout accommodates the row-to-row spacing of 0.100 inch and the through-hole solder tails.
Comparison: 5173280-3 vs 5173280-2
The 5173280-2 is a known sibling within the same AMPLIMITE.050 I series. The primary difference is the contact finish thickness: 5173280-3 carries 8.00µin (0.203µm) gold, while 5173280-2 is listed with a different plating grade. Both share the 50-position count, 0.050 pitch, D-Type cap form factor, and 1A rating. If your BOM specifies the 8.00µin gold thickness, the 5173280-3 is the correct match. No direct pin-compatible replacement outside this series is documented.