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| PartNumber | 7840-0006PR | 7840-0000PR | 7840-002 |
| Description | Headers & Wire Housings PCB 40 POS | Headers & Wire Housings 40P 2 ROW W/1 COVER 2.8mm SOLDER TAIL | |
| Manufacturer | 3M | 3M | - |
| Product Category | Headers & Wire Housings | Rectangular Connectors - Board In, Direct Wire to Board | - |
| RoHS | Y | - | - |
| Product | Headers | - | - |
| Number of Positions | 40 Position | 40 | - |
| Pitch | 2.54 mm | - | - |
| Number of Rows | 2 Row | 2 | - |
| Mounting Style | - | - | - |
| Termination Style | Through Hole | - | - |
| Contact Plating | Gold | - | - |
| Series | 78XX | - | |
| Packaging | Bulk | Bulk | - |
| Current Rating | 1 A | - | - |
| Voltage Rating | 1 kV | - | - |
| Brand | 3M Electronic Solutions Division | - | - |
| Contact Material | Beryllium Copper | - | - |
| Product Type | Headers & Wire Housings | - | - |
| Factory Pack Quantity | 100 | - | - |
| Subcategory | Headers & Wire Housings | - | - |
| Part # Aliases | 54745242008 JE150334710 | - | - |
| Color | - | Gray | - |
| Mounting Type | - | Through Hole | - |
| Features | - | Feed Through | - |
| Connector Type | - | Ribbon Cable, DIP Header | - |
| Contact Finish | - | Gold | - |
| Wire Gauge | - | 26 AWG, Stranded; 28 AWG, Solid or Stranded; 30 AWG, Solid | - |
| Contact Finish Thickness | - | Flash | - |
| Row Spacing | - | 0.100" (2.54mm) | - |
| Cable Pitch | - | 0.050" (1.27mm) | - |
| Board Side Pitch | - | 0.100" (2.54mm) | - |
| Cable Termination | - | IDC | - |