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| PartNumber | 71991-311 | 71991-310LF | 71991-3101F |
| Description | Board to Board & Mezzanine Connectors CARD CONNECTOR | Board to Board & Mezzanine Connectors 20 POS VERT PCB MNT RECPT | |
| Manufacturer | FCI / Amphenol | Amphenol FCI | - |
| Product Category | Board to Board & Mezzanine Connectors | Rectangular - Board to Board Connectors - Headers, Receptacles, Female Sockets | - |
| RoHS | N | - | - |
| Product | Receptacles | - | - |
| Number of Positions | 22 Position | 20 | - |
| Pitch | 2.54 mm | 0.100" (2.54mm) | - |
| Number of Rows | 2 Row | 2 | - |
| Termination Style | Through Hole | - | - |
| Mounting Angle | Vertical | - | - |
| Current Rating | 3 A | - | - |
| Voltage Rating | 1 kV | - | - |
| Series | Dubox | DUBOX, MezzSelect, Basics+ | - |
| Packaging | Tube | Tube | - |
| Contact Plating | Gold | - | - |
| Housing Material | Thermoplastic | - | - |
| Brand | Amphenol FCI | - | - |
| Contact Material | Copper Alloy | - | - |
| Compliance | UL, CSA | - | - |
| Product Type | Board to Board & Mezzanine Connectors | - | - |
| Factory Pack Quantity | 21 | - | - |
| Subcategory | Board to Board & Mezzanine Connectors | - | - |
| Tradename | DUBOX | - | - |
| Part # Aliases | 71991311 | - | - |
| Color | - | Blue | - |
| Termination | - | Solder | - |
| Mounting Type | - | Through Hole | - |
| Features | - | - | - |
| Height Above Board | - | 0.275" (6.99mm) | - |
| Connector Type | - | Receptacle, Bottom or Top Entry | - |
| Contact Finish | - | Gold | - |
| Contact Finish Thickness | - | 30μin (0.76μm) | - |
| Number of Positions Loaded | - | All | - |
| Row Spacing | - | 0.100" (2.54mm) | - |
| Height Stacking Mating | - | - | - |