100 W peak pulse — Ethernet port clamp
The Texas Instruments TPD4E001DPKT is a steering (rail-to-rail) TVS diode array packing four unidirectional channels into a 6-USON (1.6x1.6) package. The part is explicitly listed for Ethernet port protection, where it clamps transients on the differential pairs to the supply rails rather than to ground.
6-USON rework — lift the part, not the pad
The 1.6x1.6 mm USON package (6-USON) is a small no-lead package with a centre pad. The exposed pad under the package is the primary thermal and electrical connection — it needs a solid solder joint to the PCB ground plane. Reworking this by hand is possible with a hot-air station set to 300-320 °C, but the small body means the part heats up fast; keep the nozzle off the adjacent passives. The 0.50 mm pitch between the edge pads is tight for manual soldering — use a fine-tip iron and flux.