Position count across the 68021 series
Within the 68021 series of 0.100"-pitch unshrouded headers, the 68021-428HLF's 28 positions sit between the 26-position 68021-426HLF and the 30-position 68021-430HLF — the dual-row layout, 0.100" row spacing, right-angle through-hole orientation, and tin-plated contacts are shared across the series, so match the position count to the circuit count.
