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| PartNumber | TX1287NLT | TX1287 | TX1287NL |
| Description | Audio Transformers / Signal Transformers SMD T1/CEPT/ISDN-Pri 1200uH .7Ohms 2-Port | Audio Transformers / Signal Transformers SMD T1/CEPT/ISDN-Pri 1200uH .7Ohms 2-Port | Audio & Signal Transformers Transformers Audio & Signal XFMR QUAD |
| Manufacturer | Pulse | Pulse | Pulse Electronics Corporation |
| Product Category | Audio Transformers / Signal Transformers | Audio Transformers / Signal Transformers | Pulse Transformers |
| RoHS | Y | N | - |
| Product | LAN | Telecom | LAN |
| Type | Module | Module | Module |
| Termination Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Primary Impedance | 0.7 Ohms, 0.7 Ohms | 0.7 Ohms, 0.7 Ohms | 0.7 Ohms 0.7 Ohms |
| Isolation Voltage | 1.5 kV | 1.5 kV | 1.5 kV |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Number of Channels | Dual | 2 Channel | Dual |
| Application | T1/CEPT/ISDN-Pri | T1/CEPT/ISDN-Pri | T1/CEPT/ISDN-Pri |
| Length | 12.83 mm | 12.83 mm | 12.83 mm |
| Width | 7.11 mm | 7.11 mm | 7.11 mm |
| Height | 6.22 mm | 6.22 mm | 6.22 mm |
| Packaging | Reel | Bulk | Tube Alternate Packaging |
| Brand | Pulse Electronics | Pulse Electronics | - |
| Moisture Sensitive | Yes | Yes | - |
| Product Type | Audio & Signal Transformers | Audio & Signal Transformers | - |
| Factory Pack Quantity | 600 | 40 | - |
| Subcategory | Transformers | Transformers | - |
| Unit Weight | 0.040212 oz | 0.040212 oz | - |
| Primary Resistance | - | 700 mOhms | - |
| Secondary Resistance | - | 0.7 Ohms | - |
| Shielding | - | Unshielded | - |
| Series | - | - | - |
| Operating Temperature Range | - | - | - 40 C to + 85 C |
| Mounting Type | - | - | Surface Mount |
| Size Dimension | - | - | 12.83mm L x 7.11mm W |
| Height Seated Max | - | - | 6.22mm |
| Transformer Type | - | - | T1/E1 (Dual) |
| Turns Ratio PrimarySecondary | - | - | 1CT : 2.42CT, 1CT : 2.42CT |
| Inductance | - | - | 1.2mH, 1.2mH |
| E T | - | - | - |