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| PartNumber | 54121-809061800LF | 54121-809121650LF | 54121-809071800LF |
| Description | Board to Board & Mezzanine Connectors BERGSTIK | Headers & Wire Housings BERGSTIK | Headers & Wire Housings 578-5NPF-BERGSTIK STR |
| Manufacturer | FCI / Amphenol | Amphenol FCI | Amphenol FCI |
| Product Category | Board to Board & Mezzanine Connectors | Rectangular - Board to Board Connectors - Board Spacers, Stackers | Rectangular - Board to Board Connectors - Board Spacers, Stackers |
| RoHS | Y | - | - |
| Series | BergStik | BERGSTIKR, MezzSelect, Basics+ | BERGSTIKR, MezzSelect, Basics+ |
| Brand | Amphenol FCI | - | - |
| Product Type | Board to Board & Mezzanine Connectors | - | - |
| Factory Pack Quantity | 200 | - | - |
| Subcategory | Board to Board & Mezzanine Connectors | - | - |
| Tradename | BergStik | - | - |
| Part # Aliases | 54121809061800LF | - | - |
| Color | - | Black | Black |
| Packaging | - | Bulk | Bulk |
| Termination | - | Solder | Solder |
| Mounting Type | - | Through Hole | Through Hole |
| Number of Positions | - | 12 | 7 |
| Pitch | - | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Number of Rows | - | 1 | 1 |
| Row Spacing | - | - | - |
| Length Overall | - | 1.025" (26.03mm) | 1.025" (26.03mm) |
| Length Post Mating | - | 0.255" (6.48mm) | 0.196" (4.99mm) |
| Length Stack Height | - | 0.650" (16.50mm) | 0.709" (18.00mm) |
| Length Tail | - | 0.120" (3.05mm) | 0.120" (3.05mm) |
| Contact Finish Post Mating | - | Gold, GXT | Gold, GXT |
| Contact Finish Thickness Post Mating | - | 15μin (0.38μm) | 15μin (0.38μm) |