What it is and where it sits in the 39700 series
The Molex 397000904 is a 4-circuit single-level Eurostyle 39700 terminal block rated 10 A at 300 V, with a 5.00 mm pitch and vertical through-hole PCB mount. The series uses a push-button screwless clamp for field termination — the wire enters through the slot and the button locks it without a screwdriver. Green PA66 housing, tin-plated brass contacts, steel clamp cage.
Push-button termination — the field-wire advantage
The screwless push-button clamp is the defining characteristic of this series. Wire gauge accepted is 14–22 AWG. The clamp holds the full conductor cross-section under vibration without the cold-flow risk of a simple spring; it operates to 105 °C, which covers most industrial enclosure ambient without derating the current rating.
What the 39544 peers are and why they are not direct swaps
The 395443005 and 395443008 are Eurostyle ESE 39544 series members — same pitch class (0.200 in / 5.08 mm, which is interchangeable with the 5.00 mm of the 39700 for most PCB footprints) but the termination style differs: both peers use a rising cage screw clamp rated 15 A, 5 and 8 positions respectively, horizontal board orientation. The 397000904 is a 4-position push-button vertical-mount part rated 10 A. The 5-position peer has the closest circuit count but carries a higher current rating, a different termination tool (screwdriver required), and a different housing orientation — rewiring is needed if replacing one with the other.
Lifecycle and sourcing posture
The 397000904 is Active and ROHS3 Compliant. No lifecycle transition or last-time-buy notice on record. Quoted to order against BOM quantity — the 4-position count, 5.00 mm pitch, and push-button termination define the exact BOM line to match before committing an order.