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| PartNumber | 640251-3 | 640251-2 | 640251-1 |
| Description | Headers & Wire Housings 3P .156 HSG W/O RMP | Headers & Wire Housings SL156 HSG W/O RAMP | Headers & Wire Housings HSG REC 1X01C STD |
| Manufacturer | TE Connectivity | TE Connectivity | - |
| Product Category | Headers & Wire Housings | Headers & Wire Housings | - |
| RoHS | Y | Y | - |
| Product | Wire Housings | Wire Housings | - |
| Number of Positions | 3 Position | 2 Position | - |
| Pitch | 3.96 mm | 3.96 mm | - |
| Number of Rows | 1 Row | 1 Row | - |
| Mounting Style | - | - | - |
| Termination Style | - | - | - |
| Contact Gender | - | - | - |
| Contact Plating | - | - | - |
| Mating Post Length | - | - | - |
| Termination Post Length | - | - | - |
| Series | SL-156 | SL-156 | - |
| Application | Wire-to-Board | Wire-to-Board | - |
| Contact Type | Socket | Socket | - |
| Current Rating | 7 A | 7 A | - |
| Housing Material | Nylon | Nylon | - |
| Voltage Rating | 600 V | 600 V | - |
| Brand | TE Connectivity / AMP | TE Connectivity | - |
| Contact Material | - | - | - |
| Flammability Rating | UL 94 V-0 | UL 94 V-0 | - |
| Row Spacing | - | - | - |
| Housing Gender | Receptacle | Receptacle | - |
| Product Type | Headers & Wire Housings | Headers & Wire Housings | - |
| Factory Pack Quantity | 500 | 500 | - |
| Subcategory | Headers & Wire Housings | Headers & Wire Housings | - |
| Part # Aliases | 640251-3 | 640251-2 | - |
| Unit Weight | 0.027584 oz | 0.021376 oz | - |