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| PartNumber | 73542-645LF | 73542-605LF | 73542-640LF |
| Description | Board to Board & Mezzanine Connectors .050/1.27CC V.C.C.SM W/.044/1.12 SHRT PEG | Board to Board & Mezzanine Connectors 050CC VCC SMT W/DMND HL | Board to Board & Mezzanine Connectors 2X40P SMT RECPT |
| Manufacturer | FCI / Amphenol | FCI / Amphenol | FCI / Amphenol |
| Product Category | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors |
| RoHS | Y | Y | Y |
| Product | Receptacles | Receptacles | Receptacles |
| Number of Positions | 90 Position | - | 80 Position |
| Number of Rows | 2 Row | - | 2 Row |
| Mounting Angle | Vertical | - | Vertical |
| Current Rating | 1 A | - | 1 A |
| Voltage Rating | 800 VAC | - | 800 VAC |
| Contact Plating | Gold | - | Gold |
| Housing Material | Liquid Crystal Polymer (LCP) | - | Liquid Crystal Polymer (LCP) |
| Brand | Amphenol FCI | Amphenol FCI | Amphenol FCI |
| Contact Material | Copper Alloy | - | Copper Alloy |
| Product Type | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors |
| Factory Pack Quantity | 10 | 63 | 11 |
| Subcategory | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors |
| Part # Aliases | 73542645LF | 73542605LF | 73542640LF |
| Packaging | - | Tube | Tube |
| Pitch | - | - | 1.27 mm |
| Termination Style | - | - | SMD/SMT |