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Product Detailed Parameters
- Description：XFRMR 1CT:2CT/1CT:2CT 1.2/1.2MH
- Series：-
- Mfr：Pulse Electronics
- Package：Tube
- Transformer Type：T1/E1 (Dual)
- Inductance：1.2mH, 1.2mH
- ET (Volt-Time)：-
- Turns Ratio - Primary:Secondary：1CT:2CT, 1CT:2CT
- Mounting Type：Surface Mount
- Size / Dimension：0.505" L x 0.280" W (12.83mm x 7.11mm)
- Height - Seated (Max)：0.245" (6.22mm)
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
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Overview
The TX1188NL is a surface-mount pulse transformer manufactured by Pulse Electronics, designed for T1/E1 and ISDN-Pri applications. It features a dual-channel configuration with primary-to-secondary turns ratios of 1CT:2CT for both transmitter and receiver paths. The component exhibits an inductance of 1.2mH per channel and a primary coil impedance of 0.7 Ohms. It operates within a temperature range of -40°C to +85°C and provides an insulation voltage of 1.5 kV. The package dimensions are 12.83mm x 7.11mm with a maximum height of 6.22mm.
Feature Summary
- Supports T1/E1 and ISDN-Pri signal transmission standards
- Dual-channel architecture with 1CT:2CT turns ratio
- Surface-mount construction for automated assembly
Applications
- T1 line interface circuits
- E1 telecommunication systems
- ISDN Primary Rate Interface (PRI) equipment
Procurement Notes
Verify the specific datasheet version and RoHS compliance status prior to procurement, as manufacturing sources may vary. Confirm that the 1CT:2CT winding configuration aligns with the target circuit design requirements. Ensure compatibility with the specified operating temperature range of -40°C to +85°C for the intended application environment.
Selection Notes
Select this component for designs requiring isolation between T1/E1 lines and digital transceivers. The 1.2mH inductance value supports the necessary bandwidth for these protocols. Consider the SMD package size when determining PCB layout constraints. Verify that the 1.5 kV insulation rating meets the safety isolation requirements of the system.
Part Context
This part belongs to the Pulse Electronics portfolio of magnetics solutions for telecommunications. It serves as a critical interface component for converting differential signals while providing galvanic isolation. The device replaces older through-hole variants with a compact surface-mount form factor suitable for modern high-density PCB assemblies.
Replacement Considerations
Check for HX1188NL if single-port or different winding ratios are acceptable, though electrical characteristics differ significantly.
