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| PartNumber | T1137NL | T1137 | T1137NLST |
| Description | Audio Transformers / Signal Transformers SMD T1/CEPT/ISDN-Pri 1200uH .7Ohm 2-Port | TRANSFORMER TELECOM DUAL T1/E1 | TRANSFORMER |
| Manufacturer | Pulse | Pulse Electronics Corporation | PULSE |
| Product Category | Audio Transformers / Signal Transformers | IC Chips | IC Chips |
| RoHS | Y | - | - |
| Product | Telecom | - | - |
| Type | Module | - | - |
| Termination Style | SMD/SMT | - | - |
| Frequency Range | 1 MHz to 100 MHz | - | - |
| Inductance | 600 nH | 1.2mH, 1.2mH | - |
| Isolation Voltage | 1.5 kV | - | - |
| Minimum Operating Temperature | 0 C | - | - |
| Maximum Operating Temperature | + 70 C | - | - |
| Number of Channels | 2 Channel | - | - |
| Application | T1/CEPT/ISDN-Pri | - | - |
| Length | 12.83 mm | - | - |
| Width | 7.11 mm | - | - |
| Height | 6.22 mm | - | - |
| Packaging | Tube | Bulk | - |
| Maximum DC Resistance | 700 mOhms | - | - |
| Shielding | Unshielded | - | - |
| Brand | Pulse Electronics | - | - |
| Moisture Sensitive | Yes | - | - |
| Product Type | Audio & Signal Transformers | - | - |
| Factory Pack Quantity | 40 | - | - |
| Subcategory | Transformers | - | - |
| Series | - | - | - |
| Mounting Type | - | Surface Mount | - |
| Size Dimension | - | 12.83mm L x 9.53mm W | - |
| Height Seated Max | - | 6.22mm | - |
| Transformer Type | - | T1/E1 (Dual) | - |
| Turns Ratio PrimarySecondary | - | 1CT : 2.42CT, 1CT : 2.42CT | - |
| E T | - | - | - |