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| PartNumber | B78476A8251A003 | B78476A8250A003 | B78476A8250A3 |
| Description | Audio Transformers / Signal Transformers 1000 BASE-T -40C+85C 1-PORT | Audio Transformers / Signal Transformers 1000 BASE-T 0C-70C 2-PORT | Audio & Signal Transformers Transformers Audio & Signal 1000 BASE-T 0C-70C 2-PORT |
| Manufacturer | EPCOS / TDK | EPCOS / TDK | EPCOS (TDK) |
| Product Category | Audio Transformers / Signal Transformers | Audio Transformers / Signal Transformers | Pulse Transformers |
| RoHS | Y | Y | - |
| Product | LAN | LAN | LAN |
| Type | Module | Module | Module |
| Termination Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Frequency Range | 100 kHz to 100 MHz | - | - |
| Inductance | 350 uH | 350 uH | 350 uH |
| Isolation Voltage | 1.5 kV | - | - |
| Minimum Operating Temperature | - 40 C | 0 C | - |
| Maximum Operating Temperature | + 85 C | + 70 C | - |
| Number of Channels | Single | Single | Single |
| Application | 1000 Base-T | 1000 Base-T PoE | 1000Base-T PoE |
| Length | 17.6 mm | 17.6 mm | 17.6 mm |
| Width | 12.1 mm | 12.1 mm | 12.1 mm |
| Height | 5.8 mm | 5.7 mm | 5.8 mm |
| Series | B78476A | B78476A | - |
| Packaging | Reel | Reel | Reel |
| Maximum DC Current | 8 mA | - | - |
| Brand | EPCOS / TDK | EPCOS / TDK | - |
| Product Type | Audio & Signal Transformers | Audio & Signal Transformers | - |
| Factory Pack Quantity | 350 | 350 | - |
| Subcategory | Transformers | Transformers | - |
| Part # Aliases | 3 B78476A8251A B78476A8251A003 B78476A8251A3 B82720S2301N040 | 3 B78476A8250A B78476A8250A003 B78476A8250A3 | B78476A8250A003 |
| Moisture Sensitive | - | Yes | - |
| Operating Temperature Range | - | - | 0 C to + 70 C |
| Mounting Type | - | - | - |
| Size Dimension | - | - | - |
| Height Seated Max | - | - | - |
| Transformer Type | - | - | - |
| Turns Ratio PrimarySecondary | - | - | - |
| E T | - | - | - |