TX1287

Overview

The TX1287 is a dual-channel telecom transformer designed for T1/E1 line interface applications. It features a primary-to-secondary turns ratio of 1:2.42 on both channels, providing balanced signal transmission. The component offers an isolation voltage of 1500Vrms to ensure circuit safety and noise immunity. Primary DC resistance is specified at 0.7Ω per channel. Operating temperature ranges from -40°C to +85°C, suitable for robust industrial environments.

Feature Summary

• Dual-channel configuration supporting simultaneous T1 and E1 signaling paths
• High isolation voltage capability for enhanced electrical safety
• Surface mount packaging optimized for automated assembly processes

Applications

• T1 network interface units
• E1 digital telephony systems
• Telecom line driver circuits
• Network synchronization equipment

Procurement Notes

Verify the specific datasheet revision and manufacturing date code upon order confirmation. Ensure that the requested package variant matches the required PCB footprint dimensions. Confirm compliance with current environmental regulations such as RoHS3 status before finalizing procurement specifications.

Selection Notes

Select this component when designing interfaces requiring standardized T1 or E1 impedance matching. Consider the thermal operating range limits during system integration. Evaluate the physical dimensions against available board space constraints. Verify compatibility with standard reflow soldering profiles for surface mount technology.

Part Context

This transformer belongs to Pulse Electronics' lineup of telecommunications components. It serves as a critical passive element in digital subscriber line hardware. The design supports high-frequency signal integrity over copper pairs. It replaces older through-hole variants in modern compact telecom modules.

Replacement Considerations

Consult official substitution lists for direct pin-compatible alternatives. Generic equivalents may differ in isolation ratings or magnetic performance. Validate any substitute part against the original schematic requirements.