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| PartNumber | 66953-020LF | 66953-020 | 66953-021 |
| Description | Headers & Wire Housings PCB CONNECTOR 40P | Headers & Wire Housings PCB CONNECTOR 40P | Headers & Wire Housings |
| Manufacturer | FCI / Amphenol | FCI / Amphenol | - |
| Product Category | Headers & Wire Housings | Headers & Wire Housings | - |
| RoHS | Y | N | - |
| Product | Headers | Headers | - |
| Type | Socket Assembly | Socket Assembly | - |
| Number of Positions | 40 Position | 10 Position | - |
| Pitch | 2.54 mm | 2.54 mm | - |
| Number of Rows | 2 Row | 2 Row | - |
| Mounting Style | - | - | - |
| Termination Style | Through Hole | Through Hole | - |
| Mounting Angle | Vertical | Vertical | - |
| Contact Gender | Socket (Female) | Socket (Female) | - |
| Contact Plating | Gold | Gold | - |
| Series | Dubox | Dubox | - |
| Tradename | DUBOX | DUBOX | - |
| Packaging | Tube | Tube | - |
| Housing Material | Thermoplastic | Thermoplastic | - |
| Brand | Amphenol FCI | Amphenol FCI | - |
| Contact Material | Phosphor Bronze | Phosphor Bronze | - |
| Product Type | Headers & Wire Housings | Headers & Wire Housings | - |
| Factory Pack Quantity | 11 | 11 | - |
| Subcategory | Headers & Wire Housings | Headers & Wire Housings | - |
| Part # Aliases | 66953020LF | 66953020 | - |
| Current Rating | - | 3 A | - |
| Compliance | - | UL, CSA | - |