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| PartNumber | 1-640521-0 | 1-640522-0 | 1-640520-0 |
| Description | Headers & Wire Housings 9CKT MATRIX PLUG | Headers & Wire Housings 12CKT MATRIX PLUG | Headers & Wire Housings 6CKT MATRIX PLUG |
| Manufacturer | TE Connectivity | - | TE Connectivity AMP Connectors |
| Product Category | Headers & Wire Housings | - | IC Chips |
| RoHS | Y | - | - |
| Product | Wire Housings | - | - |
| Type | Plug Housing | - | - |
| Mounting Style | - | - | - |
| Termination Style | - | - | - |
| Contact Gender | - | - | - |
| Contact Plating | - | - | - |
| Mating Post Length | - | - | - |
| Termination Post Length | - | - | - |
| Series | (MR) Miniature Rectangular | - | MR (Miniature Rectangular) |
| Tradename | Miniature Rectangular | - | - |
| Brand | TE Connectivity / AMP | - | - |
| Contact Material | - | - | - |
| Product Type | Headers & Wire Housings | - | - |
| Factory Pack Quantity | 1000 | - | - |
| Subcategory | Headers & Wire Housings | - | - |
| Part # Aliases | 1-640521-0 | - | - |
| Unit Weight | 0.160003 oz | - | - |
| Color | - | - | Red |
| Packaging | - | - | Bulk |
| Mounting Type | - | - | Panel Mount, Snap-In |
| Features | - | - | - |
| Connector Type | - | - | Plug |
| Contact Termination | - | - | Crimp |
| Number of Positions | - | - | 6 |
| Pitch | - | - | 0.165" (4.20mm) |
| Number of Rows | - | - | 2 |
| Contact Type | - | - | Female Socket |
| Row Spacing | - | - | 0.165" (4.20mm) |
| Fastening Type | - | - | Locking Ramp |