What this 3-position header does in the harness
It uses a 1.00 mm pitch, which keeps the PCB footprint small but still allows for a single signal pair plus a ground or a low-power sensor connection. The header is surface-mount with solder retention and a pick-and-place feature, so it runs through standard reflow assembly.
How the 3-position compares to 5 and 8 position siblings
The 2035560307 is the 3-position member of the Pico-Clasp 203556 series. For a single sensor or a power pair, 3 positions are enough; for a multi-signal interface, step up to the 5 or 8 position variant.