The Amphenol 86503-128HLF is a 28-position, dual-row BERGSTIK® II unshrouded header on the standard 0.100" (2.54 mm) pitch.
Board Footprint and Mating
The 0.100" pitch and row spacing create a 0.100" x 0.100" grid — a standard footprint that accepts a wide range of mating receptacles, including IDC sockets and crimp housings with the same pitch. The 0.250" (6.35 mm) mating pin length gives enough engagement depth for most standard receptacles, while the 0.120" (3.05 mm) solder tail suits boards up to about 0.062" thick. Overall contact length is 0.470" (11.94 mm). All 28 positions are loaded — no option for selective population.
The base product number is 86503, which covers the dual-row, 0.100" pitch BERGSTIK II family. The -128HLF suffix specifies the 28-position variant with gold/GXT plating and the 0.120" post length.