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| PartNumber | DW-20-12-T-D-550-LL | DW-20-12-T-D-550 | DW-20-12-T-D-500 |
| Description | Board to Board & Mezzanine Connectors .100" Flex Stack, Flexible Board Stacker, .110" Tail | Board to Board & Mezzanine Connectors .100" Flex Stack, Flexible Board Stacker, .110" Tail | Board to Board & Mezzanine Connectors .100" Flex Stack, Flexible Board Stacker, .110" Tail |
| Manufacturer | Samtec | Samtec | Samtec |
| Product Category | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors |
| RoHS | Y | Y | Y |
| Product | Headers | Headers | Headers |
| Number of Positions | 40 Position | 40 Position | 40 Position |
| Pitch | 2.54 mm | 2.54 mm | 2.54 mm |
| Number of Rows | 2 Row | 2 Row | 2 Row |
| Termination Style | Through Hole | Through Hole | Through Hole |
| Mounting Angle | Vertical | Straight | Vertical |
| Series | DW | DW | DW |
| Packaging | Bulk | Bulk | Bulk |
| Application | Elevated Board Stacking | - | Elevated Board Stacking |
| Contact Plating | Tin | Tin | Tin |
| Housing Material | Polyester | Polyester | Polyester |
| Brand | Samtec | Samtec | Samtec |
| Contact Material | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze |
| Flammability Rating | UL 94 V-0 | UL 94 V-0 | UL 94 V-0 |
| Mounting Style | Straight Pin | Straight Pin | Straight Pin |
| Maximum Operating Temperature | + 105 C | + 105 C | + 105 C |
| Minimum Operating Temperature | - 55 C | - 55 C | - 55 C |
| Product Type | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors |
| Stack Height | 13.97 mm | 13.97 mm | 12.7 mm |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors | Board to Board & Mezzanine Connectors |
| Tradename | Flex Stack | Flex Stack | Flex Stack |
| Termination Post Length | - | 2.79 mm | - |