The TE Connectivity 3-647334-1 is a wire-to-board terminal from the Mini Amp-In series, designed for a through-board termination — the wire is inserted through the PCB hole and soldered on the opposite side, creating a permanent, vibration-resistant connection. It accepts 14 to 18 AWG stranded wire, with an insulation diameter range of 0.090" to 0.150" (2.29mm to 3.81mm). The tin-plated phosphor bronze contact suits applications where the terminal is mated infrequently, such as power supply leads, appliance internal wiring, or industrial control panels. The required PCB hole diameter is 0.125" (3.18mm), and the overall terminal length is 0.333" (8.46mm).
Board Layout and Wire Prep
The 0.125" (3.18mm) hole diameter is the only PCB footprint requirement — no additional mounting hardware or standoffs are needed. The terminal is through-board, meaning the wire is stripped, inserted from the component side, and soldered on the opposite side. The 14-18 AWG range covers common power and signal gauges; the 0.090" to 0.150" insulation diameter tolerance accommodates most PVC and cross-linked wire jackets.