What this 2-position 0.80mm receptacle does on the board
The 1981813-1: This is a Micro SLP series receptacle from TE Connectivity — a 2-position, single-row, surface-mount connector with a 0.80mm pitch, rated 0.5A per contact at 30V. The gold-plated mating and post surfaces (12.0µin on mating, 1.97µin on post) handle signal-level duty with good corrosion resistance for moderate environments. Board to Cable/Wire style means it mates with a cable-mounted plug — the 0.80mm pitch keeps the footprint tight, suitable for compact handheld or sensor modules where board space is at a premium.
Pitch and footprint — what 0.80mm means for the layout
At 0.80mm pitch, the per-contact spacing is fine enough that routing between pads on a single layer is tight — expect to use a via-in-pad or a microvia if the trace count exceeds one per channel. The SMT termination with solder retention features holds the part during reflow, reducing tombstoning risk on a 2-position part. The insulation height of 1.40mm (0.055") sets the z-height clearance under the mated plug — confirm your enclosure clearance if the cable exits directly above the connector.
0.5A per contact at 30V is a signal-level rating — this connector is not for power delivery. Phosphor bronze contact material provides good spring properties for the contact beam, maintaining normal force over the connector's service life.