What the 57102-G08-09LF Is
The FCI/Amphenol 57102-G08-09LF is the 18-circuit member of the Minitek 2.00mm board-to-board header series. It carries a dual-row, 0.079" (2.00mm) pitch array of square male pins in an unshrouded header body — the open top means the mating receptacle must carry the alignment and retention function. Push-pull fastening is specified on the header side, which requires the counterpart receptacle to carry a matching push-pull latch; without that, the mated pair relies on contact normal force alone and is not suited for vibration environments without supplementary board lock or clip. The contact system uses a dual-plating finish: 30.0 µin (0.76 µm) gold GXT on the mating face gives wear-resistant durability across the intended cycle life, while the solder tail receives 78.7 µin (2.00 µm) of tin to support reliable through-hole solder termination. The thicker tin on the post side resists the thermal cycling of wave or hand soldering without degrading the thinner precious-metal finish at the interface.
Board layout and fit for the harness builder
The push-pull fastening type on the header means the mating receptacle must carry the complementary latch feature — this is a series-internal compatibility constraint. Verify the Amphenol 57102 receptacle side explicitly lists push-pull compatibility before specifying the pair; an unshrouded header without a confirmed latch partner is a fit risk on the shop floor.
Current and voltage — what the ratings mean
The 2 A per contact rating at 200 V AC/DC is a per-circuit figure, not a derated aggregate. At 2.00mm pitch in a dual-row layout, the thermal path from contact to board runs through the through-hole barrel and the housing wall — the UL94 V-0 thermoplastic has a defined heat deflection ceiling. For any application pushing contacts above 1.5 A in a densely populated connector, run the current-derating curve against the actual board temperature, not just the ambient. Voltage at 200 V AC/DC covers the majority of industrial signal and low-power distribution bus voltages. The limiting factor for high-voltage signal is not the contact geometry but the creepage distance between adjacent rows — at 2.00mm pitch the row spacing is tight, so confirm the working voltage meets your specific creepage requirement for the pollution degree in the operating environment.
Lifecycle and sourcing posture
Listed as Active. No official successor order code appears in the ledger — the Base Product Number is 57102, and within the Minitek 2.00mm family the series carries 2-position through 30-position variants, but the 57102-G08-09LF specifically (18 circuits, push-pull, tin/GXT dual finish) has no named cross-reference on record. Sourcing is quoted-to-order against BOM quantity; confirm lead time for reel or tray packaging if your assembly process has a feeder constraint.