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| PartNumber | BTFW20R-3RD7LF | BTFW20R-3RSTAE4LF | BTFW20R-3RDA7MLF |
| Description | Board to Board & Mezzanine Connectors FLOATING BD TO BD | Board to Board & Mezzanine Connectors BTFW20R-3RSTAE4LF-BTFW20R-3RSTAE4LF | Board to Board & Mezzanine Connectors BTFW20R-3RDA7MLF |
| Manufacturer | Amphenol FCI | Amphenol FCI | Amphenol FCI |
| Product Category | Rectangular - Board to Board Connectors - Arrays, Edge Type, Mezzanine | Rectangular - Board to Board Connectors - Arrays, Edge Type, Mezzanine | Rectangular - Board to Board Connectors - Arrays, Edge Type, Mezzanine |
| Series | BTFW | BTFW | BTFW |
| Packaging | Tray | Tray | Tray |
| Mounting Type | Through Hole, Right Angle | Surface Mount, Right Angle | Through Hole, Right Angle |
| Features | Board Lock | Solder Retention | Board Lock |
| Height Above Board | 0.299" (7.60mm) | 0.299" (7.60mm) | 0.299" (7.60mm) |
| Connector Type | Receptacle, Outer Shroud Contacts | Receptacle, Outer Shroud Contacts | Receptacle, Outer Shroud Contacts |
| Contact Finish | Tin | Gold | Gold |
| Contact Finish Thickness | - | - | - |
| Number of Positions | 20 | 20 | 20 |
| Pitch | 0.039" (1.00mm) | 0.039" (1.00mm) | 0.039" (1.00mm) |
| Number of Rows | 2 | 2 | 2 |
| Mated Stacking Heights | - | - | - |