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| PartNumber | 640631-2 | 640632-2 | 640631-3 |
| Description | Headers & Wire Housings IDC CONTACTS 18 AWG Tin plated | Headers & Wire Housings IDC CONTACTS 20 AWG Tin plated | Headers & Wire Housings IDC CONTACTS 18 AWG Tin plated |
| Manufacturer | TE Connectivity | TE Connectivity | TE Connectivity |
| Product Category | Headers & Wire Housings | Headers & Wire Housings | Headers & Wire Housings |
| RoHS | N | N | Y |
| Product | Contacts | Contacts | Contacts |
| Type | - | - | - |
| Number of Positions | - | - | - |
| Pitch | - | - | - |
| Number of Rows | - | - | - |
| Mounting Style | - | - | - |
| Mounting Angle | - | - | - |
| Contact Gender | Pin (Male) | Socket (Female) | Socket (Female) |
| Contact Plating | Tin | Tin | Tin |
| Mating Post Length | - | - | - |
| Termination Post Length | - | - | - |
| Series | MTA-156 | MTA-156 | MTA-156 |
| Housing Material | - | - | - |
| Brand | TE Connectivity / AMP | TE Connectivity / AMP | TE Connectivity / AMP |
| Contact Material | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze |
| Row Spacing | - | - | - |
| Housing Gender | - | - | - |
| Latching Type | - | - | - |
| Product Type | Headers & Wire Housings | Headers & Wire Housings | Headers & Wire Housings |
| Factory Pack Quantity | 1000 | 1000 | 1000 |
| Subcategory | Headers & Wire Housings | Headers & Wire Housings | Headers & Wire Housings |
| Wire Gauge | 18 | 20 | 18 |
| Termination Style | - | - | IDC |
| Tradename | - | - | MTA |
| Packaging | - | - | Bulk |
| Contact Type | - | - | - |
| Part # Aliases | - | - | 640631-3 |