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| PartNumber | 2-647401-1 | 2-647401-0 | 2-647400-2 |
| Description | Headers & Wire Housings 21P SL156 HSG W/RAMP LRG OPEN | Headers & Wire Housings 20P SL156 HSG W/RAMP LRG OPEN | Headers & Wire Housings 22P SL156 HSG NO RAMP LRG OPEN |
| Manufacturer | TE Connectivity | - | - |
| Product Category | Headers & Wire Housings | - | - |
| RoHS | Y | - | - |
| Product | Wire Housings | - | - |
| Type | Receptacle Housing | - | - |
| Number of Positions | 21 Position | - | - |
| Pitch | 3.96 mm | - | - |
| Termination Style | Crimp | - | - |
| Contact Gender | Socket (Female) | - | - |
| Series | SL-156 | - | - |
| Tradename | Economy Power | - | - |
| Application | Wire-to-Board | - | - |
| Housing Material | Nylon | - | - |
| Brand | TE Connectivity / AMP | - | - |
| Flammability Rating | UL 94 V-0 | - | - |
| Latching Type | Locking Ramp | - | - |
| Product Type | Headers & Wire Housings | - | - |
| Factory Pack Quantity | 1 | - | - |
| Subcategory | Headers & Wire Housings | - | - |
| Part # Aliases | 2-647401-1 | - | - |