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| PartNumber | SM75056EL | SM75057EL | SM75056PEL |
| Description | Audio Transformers / Signal Transformers ISDN TRANSFORMER | Audio Transformers / Signal Transformers T1/E1 low height 5.65mm | Audio & Signal Transformers Transformers Audio & Signal T1/E1 Potted |
| Manufacturer | Bourns | Bourns | Bourns Inc. |
| Product Category | Audio Transformers / Signal Transformers | Audio Transformers / Signal Transformers | Pulse Transformers |
| RoHS | Y | Y | - |
| Product | LAN | LAN | LAN |
| Type | Module | Module | Module |
| Number of Channels | Single | Single | Single |
| Application | T1/E1 | T1/E1 | T1/E1 |
| Brand | Bourns | Bourns | - |
| Product Type | Audio & Signal Transformers | Audio & Signal Transformers | T1/E1 |
| Factory Pack Quantity | 700 | 700 | - |
| Subcategory | Transformers | Transformers | - |
| Packaging | - | Reel | Reel |
| Series | - | - | SM |
| Termination Style | - | - | SMD/SMT |
| Operating Temperature Range | - | - | - 40 C to + 85 C |
| Height | - | - | 5.65 mm |
| Length | - | - | 12.8 mm |
| Width | - | - | 6.9 mm |
| Mounting Type | - | - | - |
| Size Dimension | - | - | - |
| Height Seated Max | - | - | - |
| Transformer Type | - | - | - |
| Turns Ratio PrimarySecondary | - | - | - |
| Inductance | - | - | 1.2 mH |
| E T | - | - | - |
| Isolation Voltage | - | - | 2 kV |
| Part # Aliases | - | - | / E1 T1 TRANSFORMER |
| Maximum DC Resistance | - | - | 800 mOhms |