What it is — and where it sits in the series
The Molex 399700105 is a 5-position Eurostyle 39970 barrier terminal block, 0.400-inch (10.16 mm) pitch, rated 60 A per circuit at 300 V. It accepts 6 AWG wire via a screw-driven rising cage clamp — the clamp body is brass with nickel plating, the screw itself is tin-plated bronze, and the contact is copper-tin — and mounts through-hole to the PCB in a horizontal orientation. The housing is black PBT, rated for continuous operation from -40 °C up to 130 °C.
5 positions vs the 4-position sibling
The 0399700104 carries the same 60 A, 300 V, 0.400-inch pitch, M4 screw, rising cage clamp, and through-hole footprint — but at 4 positions instead of 5. If your panel was laid out around the 4-position part, the mounting hole pattern and pitch are identical, so the 5-position drops in without a re-drill: you gain one circuit in the same envelope. The only question is whether your wire bundle routing clears the extra position on the entry side.
Lifecycle and compliance
Listed as Active and ROHS3 Compliant. No official successor or cross-reference exists — if you are specifying this into a new design, the 5-position / 4-position choice is driven by circuit count, not by a lifecycle concern. The pitch and torque spec are consistent across the series, so swapping position count on a re-spin is a layout decision, not a re-qualification event.