TX1099NL

Overview

The TX1099NL is a dual-channel pulse transformer manufactured by Pulse Electronics, designed for T1/E1 telecommunications applications. It features a surface-mount package with dimensions of 12.83mm x 7.11mm x 6.22mm. The device has an inductance of 1.2mH per channel and a primary DC resistance of 1 Ohm. The turns ratio is specified as 1CT:1:0.8 for both channels. It operates within a temperature range of -40°C to 85°C and includes insulation capabilities up to 1500Vrms.

Feature Summary

• Dual-channel construction supporting simultaneous T1 and E1 signal processing
• Surface-mount design optimized for automated PCB assembly processes
• High insulation voltage rating ensuring electrical isolation between circuits

Applications

• T1 line interface circuits
• E1 digital transmission systems
• ISDN primary rate interfaces

Procurement Notes

Verify the specific suffix code on the component marking to ensure compatibility with required packaging formats such as tape and reel or tube. Confirm that the manufacturer part number matches the exact specification sheet for the intended frequency response and impedance characteristics before finalizing procurement orders.

Selection Notes

Select this component when designing hardware requiring standardized T1 or E1 pulse transformation with surface-mount constraints. Ensure the circuit layout accommodates the specified physical footprint and thermal requirements. Validate that the 1.2mH inductance meets the low-frequency response needs of the specific telecommunication protocol being implemented.

Part Context

This component belongs to the family of telecom transformers produced by Pulse Electronics. These devices are engineered specifically for digital subscriber line and carrier-grade communication equipment. The TX1099NL serves as a critical interface element for converting and isolating high-speed digital signals in network infrastructure.

Replacement Considerations

Consult official distributor databases for cross-reference lists. Verify pinout compatibility and electrical parameters against alternative manufacturers' offerings before substitution.

FAQ

What is the primary DC resistance of the TX1099NL?

The primary DC resistance is 1 Ohm.

Is this transformer suitable for ISDN applications?

Yes, it is documented for use in ISDN primary rate interfaces.