PCI Express Edge-Card Connector, 64 Positions, 1.00 mm Pitch
The Molex 0877159105 is a 64-position female edge-card connector from the 87715 series, designed for PCI Express card interfaces. It uses a 0.039" (1.00mm) pitch in a dual-row layout, matching the standard PCIe x16 card edge footprint. The through-hole termination uses staggered solder tails to ease routing escape between the two rows on the motherboard. Key features include an integral board guide that aligns the card during insertion, preventing contact stubbing, and a locking ramp that latches the card edge for vibration-resistant retention. This connector is used as the motherboard-side receptacle for PCI Express add-in cards — graphics, NVMe storage, network adapters — in desktop, server, and industrial computing equipment where the 64-circuit interface provides one x16 lane or bifurcated x8/x8 lanes.
That gold thickness supports repeated insertion and removal cycles typical of a PCIe slot — the connector is designed for field-serviceable cards, not a one-time solder-down. The gold layer also resists corrosion in environments with moderate humidity or airborne contaminants.
The connector accepts a PCI Express card with a thickness of 0.062" (1.57mm) — the standard PCB thickness for add-in cards. The through-hole tails are staggered in two rows, which helps the board designer route traces between the two rows without necking down to impractical widths. The connector ships in trays, suitable for hand-loading or pick-and-place with a through-hole-compatible nozzle.