Hybrid Power-Signal Header for Backplane and Board-Edge Assembly
The TE Connectivity 1-1892786-8 is a 33-position MINIPAK HDL header that splits its contact layout into 25 signal pins and 8 power blades — a hybrid arrangement that lets a single connector carry both logic-level signals and bus-level current on the same footprint. The power positions use wider blade contacts to handle higher current than the signal pins, so the connector is sized for a power distribution rail alongside dense signal routing. The right-angle orientation and board-edge mounting let the header sit flush with the PCB edge, mating perpendicular to the board for a low-profile daughtercard connection in a backplane or midplane chassis.
Press-Fit Termination and Board-Edge Mounting
Press-fit termination is the key assembly detail here — the compliant pin eyelet deforms as it enters the PCB hole, creating a gas-tight joint without solder. That means no wave-solder or reflow step, which cuts process time and eliminates thermal shock to the board. A mating guide feature helps align the plug during blind-mate assembly in a backplane slot.
For a connector that lives in a backplane or power-distribution chassis where the daughtercard may be swapped during service life, that plating thickness means the contact resistance stays stable across dozens of insertion cycles. Gold-palladium adds a harder surface than pure gold, which helps resist fretting corrosion in a vibration environment. The tin-plated alternative common in lower-cost connectors would gall and oxidize under the same duty.
Flammability and Environmental Compliance
ROHS3 compliance is confirmed on record, which covers the full substance restriction including the four phthalates added in the 2015 amendment. No halogen-free or low-halogen claim is stated, but the V-0 rating typically aligns with a halogenated flame retardant system.