| PartNumber | S558-5999-AF-F | S558-5999-AC-F | S558-5999-AB-F |
| Description | Audio Transformers / Signal Transformers 10/100BaseT Lan Magnetic Dual -40 to 85*C RoHS SMT | Audio Transformers / Signal Transformers | Audio Transformers / Signal Transformers Transformer |
| Manufacturer | Bel | Bel | Bel |
| Product Category | Audio Transformers / Signal Transformers | Audio Transformers / Signal Transformers | Audio Transformers / Signal Transformers |
| RoHS | Y | Y | Y |
| Product | LAN | LAN | LAN |
| Type | Module | Module | Module |
| Number of Channels | Dual | Single | Single |
| Application | 10/100 Base-T | 1000 Base-T | 1000 Base-T |
| Packaging | Reel | Reel | Reel |
| Brand | Bel Magnetic Solutions | Bel Magnetic Solutions | Bel Magnetic Solutions |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | Audio & Signal Transformers | Audio & Signal Transformers | Audio & Signal Transformers |
| Factory Pack Quantity | 320 | 320 | 320 |
| Subcategory | Transformers | Transformers | Transformers |
| Part # Aliases | S5585999AF-F | S5585999AC-F | - |
| Termination Style | - | SMD/SMT | SMD/SMT |
| Inductance | - | 350 uH | 350 uH |
| Minimum Operating Temperature | - | - 40 C | - 40 C |
| Maximum Operating Temperature | - | + 85 C | + 85 C |
| Length | - | 15.24 mm | 15.24 mm |
| Width | - | 13.26 mm | 13.26 mm |
| Height | - | 6.35 mm | 6.35 mm |
| Tradename | - | MagJack | MagJack |