80-Position Mezzanine Receptacle, 22.5 mm Stack Height
The B4101B7L111280E100 is an 80-position receptacle from an Amphenol ICC board-to-board series, pitched at 0.031" (0.80mm) across two rows. Gold flash plating (2.00µin) on the contacts handles the expected mating cycles in controlled environments without the cost of thicker gold.
Board Assembly Features
This receptacle carries board guide, pick-and-place, and solder retention features — three details that matter on an SMT line. The board guide takes the shear force during blind mating, so the signal pins don't take the hit. The pick-and-place surface lets the nozzle handle the part without fumbling.
Stack Height vs. the Header Peer
The matching header in this series, B4061B7L111280E100, shares the same 0.031" (0.80mm) pitch and 80 positions but stands at 0.346" (8.80mm) above the board. The receptacle's 0.717" (18.21mm) height plus the header's 8.80mm gives the 22.5mm mated stack. If your board spacing is tighter, the 8.80mm header paired with a shorter receptacle variant is the adjustment — not a different connector family.