T1108NL

Pulse Transformers Overview

The T1108NL is a surface-mount pulse transformer manufactured by Pulse Electronics, designed for T1/E1, CEPT, and ISDN-PRI applications. It features a quad configuration with four ports. The device provides a turns ratio of 1:2CT for the transmitter section and 1:1CT for the receiver section. Key electrical parameters include an inductance of 1.2 mH for both primary and secondary windings. The component operates within a temperature range of -40°C to +85°C. Physical dimensions are 28.58 mm in length, 12.32 mm in width, and 5.84 mm in maximum height. It is RoHS compliant and classified as EAR99.

Pulse Transformers Feature Summary

• Provides electrical isolation for T1/E1, CEPT, and ISDN-PRI signaling standards
• Features distinct winding ratios optimized for separate transmitter and receiver paths
• Supports surface mount technology for automated PCB assembly

Pulse Transformers Applications

• T1/E1 digital telecommunication line interface circuits
• CEPT standard data transmission equipment
• ISDN Primary Rate Interface (PRI) network terminals

Pulse Transformers Procurement Notes

Verify the specific datasheet version and manufacturing lot date codes upon receipt. Confirm that the surface-mount footprint matches the design layout, specifically the 28.58 mm x 12.32 mm dimensions. Ensure handling procedures account for the Moisture Sensitivity Level (MSL 4) rating to prevent package damage during reflow soldering. Cross-reference the 1:2CT and 1:1CT winding configurations with the schematic requirements before integration.

Pulse Transformers Selection Notes

Select this component when designing systems requiring standardized pulse transformation for North American or European digital telephony interfaces. The quad-port architecture supports simultaneous signal processing for multiple lines. Consider the 1.2 mH inductance value for impedance matching in high-frequency digital environments. The surface-mount form factor is suitable for compact board designs where space efficiency is critical compared to through-hole alternatives.

Pulse Transformers Part Context

This part belongs to the family of audio and signal transformers produced by Pulse Electronics. These components are engineered to maintain signal integrity while providing necessary galvanic isolation between transceivers and network lines. The product line adheres to IEEE 802.3 and other telecommunications standards, ensuring compatibility with major industry transceiver architectures.

Pulse Transformers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and inductance tolerances if considering alternative generic pulse transformers from other manufacturers.