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| PartNumber | 91601-321ALF | 91601-320LF | 91601-321LF |
| Description | Board to Board & Mezzanine Connectors 21P SR SMT BTB RECPT | Board to Board & Mezzanine Connectors 20P SR SMT BTB RECPT | Board to Board & Mezzanine Connectors 21P SR VERT CARD CON GOLD |
| Manufacturer | FCI / Amphenol | FCI / Amphenol | - |
| Product Category | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors | - |
| RoHS | Y | Y | - |
| Number of Positions | 21 Position | 20 Position | - |
| Pitch | 2.54 mm | 2.54 mm | - |
| Number of Rows | 1 Row | 1 Row | - |
| Termination Style | SMD/SMT | - | - |
| Mounting Angle | Vertical | Vertical | - |
| Current Rating | 3 A | 3 A | - |
| Voltage Rating | 1 kV | 1 kV | - |
| Packaging | Reel | Tube | - |
| Contact Plating | Gold | Gold | - |
| Housing Material | Thermoplastic (TP) | Thermoplastic | - |
| Brand | Amphenol FCI | Amphenol FCI | - |
| Contact Material | Phosphor Bronze | Phosphor Bronze | - |
| Product Type | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors | - |
| Factory Pack Quantity | 600 | 11 | - |
| Subcategory | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors | - |
| Tradename | Dubox | Dubox | - |
| Part # Aliases | 91601321ALF | 91601320LF | - |