E2458FNL

Overview

The E2458FNL is a surface-mount isolation transformer manufactured by Pulse Electronics, designed for 10BASE-T data interface applications. It features a primary-to-secondary turn ratio of 1:1.41 and includes an integrated center tap. The component exhibits an inductance of 160µH on both primary and secondary windings. It is constructed as an encapsulated unit suitable for automated assembly processes.

Feature Summary

• Provides galvanic isolation for Ethernet signal transmission
• Encapsulated construction ensures mechanical stability
• Integrated center tap simplifies circuit topology
• Optimized for standard surface-mount reflow soldering

Applications

• 10BASE-T Ethernet network interfaces
• Data communication equipment ports
• Industrial control system networking modules
• Embedded communication hardware

Procurement Notes

Verify the specific datasheet revision and manufacturing origin before integration. Confirm that the encapsulation type matches the thermal requirements of the target PCB layout. Ensure compatibility with standard lead-free soldering profiles to maintain structural integrity during assembly.

Selection Notes

Select this component when a compact, shielded solution for 10BASE-T isolation is required. The fixed 160µH inductance and 1:1.41 ratio are critical for impedance matching in legacy Ethernet designs. Evaluate physical dimensions against available board space constraints.

Part Context

This part belongs to the Pulse Electronics portfolio of magnetics components. It serves as a specialized passive element within active network circuits. The design focuses on reliability and consistent electrical performance across varying environmental conditions typical in commercial electronics.

Replacement Considerations

Direct substitutes must match the 160µH inductance, 1:1.41 ratio, and SMD footprint. Verify that alternative suppliers offer equivalent encapsulation and center-tap configurations to ensure functional parity without redesign.