Board-to-Wire Sizing for a 3-Position Signal Run
The 3-647502-3: This is a 3-position, single-row, unshrouded header from the MTA-100 series — a workhorse board-to-wire interconnect for general-purpose signal and low-power distribution. This is a field-service-friendly feature: the connector can be unmated and re-mated repeatedly without wearing out a locking ramp.
Surface-Mount Assembly and Board Layout
The 0.347" (8.81 mm) insulation height leaves clearance for components on adjacent board areas. Tin is cost-effective for moderate mating-cycle applications (50–100 cycles typical) and is compatible with the tin-plated receptacle contacts in the MTA-100 system.