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| PartNumber | 87021-640LF | 87021-645 | 87021-640 |
| Description | Board to Board & Mezzanine Connectors RIBCAGE II | Board to Board & Mezzanine Connectors RIB CAGE II VCC S.M. | Board to Board & Mezzanine Connectors RIBCAGE II |
| Manufacturer | FCI / Amphenol | Amphenol FCI | - |
| Product Category | Board to Board & Mezzanine Connectors | Rectangular - Board to Board Connectors - Headers, Receptacles, Female Sockets | - |
| RoHS | Y | - | - |
| Number of Positions | 80 Position | 90 | - |
| Pitch | 1.27 mm | 0.050" (1.27mm) | - |
| Number of Rows | 2 Row | 2 | - |
| Termination Style | SMD/SMT | - | - |
| Mounting Angle | Vertical | - | - |
| Current Rating | 1 A | - | - |
| Voltage Rating | 800 VAC | - | - |
| Series | RibCage | Rib-Cage, MezzSelect | - |
| Contact Plating | Gold | - | - |
| Housing Material | Liquid Crystal Polymer (LCP) | - | - |
| Brand | Amphenol FCI | - | - |
| Contact Material | Copper Alloy | - | - |
| Product Type | Board to Board & Mezzanine Connectors | - | - |
| Factory Pack Quantity | 11 | - | - |
| Subcategory | Board to Board & Mezzanine Connectors | - | - |
| Tradename | Rib-Cage | - | - |
| Part # Aliases | 87021640LF | - | - |
| Color | - | Natural | - |
| Packaging | - | Tube | - |
| Termination | - | Solder | - |
| Mounting Type | - | Surface Mount | - |
| Features | - | - | - |
| Height Above Board | - | 0.187" (4.75mm) | - |
| Connector Type | - | Receptacle | - |
| Contact Finish | - | Gold or Gold, GXT | - |
| Contact Finish Thickness | - | 30μin (0.76μm) | - |
| Number of Positions Loaded | - | All | - |
| Row Spacing | - | 0.050" (1.27mm) | - |
| Height Stacking Mating | - | - | - |