H1100FNL

Overview

The H1100FNL is a single-port LAN transformer module manufactured by Pulse Electronics, designed for surface-mount technology applications. It supports 100Base-TX Ethernet standards without Power over Ethernet functionality. The component features an inductance of 350 uH and a maximum DC resistance of 650 mOhms. It operates within a frequency range of 100 kHz to 100 MHz and provides an insulation voltage of 1.5 kV. The physical dimensions are 0.5 inches in length, 0.358 inches in width, and 6.09 mm in height. The unit weight is 1.522 grams, and it functions reliably between 0°C and +70°C.

Feature Summary

• Supports 100Base-TX Ethernet signaling with integrated magnetics
• Surface-mount design for automated assembly processes
• Provides electrical isolation with 1.5 kV insulation rating

Applications

• 100Base-TX network interface circuits
• Ethernet hub and switch port interfaces
• Computer networking equipment signal conditioning

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to ensure correct package type and tape/reel specifications. Confirm RoHS compliance status through current datasheets or environmental reports prior to procurement. Cross-reference the manufacturer part number with distributor catalogs to validate availability and authenticity. Ensure the selected variant matches the required non-PoE configuration for the target application.

Selection Notes

Select this component for designs requiring standard 100 Mbps Ethernet connectivity without power delivery requirements. Consider the SMD package dimensions for PCB space constraints and thermal management needs. Evaluate the operating temperature range against the intended environmental conditions. Compare the inductance and DC resistance values with circuit simulation models to ensure signal integrity compliance.

Part Context

This component belongs to the Pulse Electronics LAN Transformers product line, specifically categorized under Audio & Signal Transformers. It serves as a critical magnetics solution for Ethernet physical layer interfaces. The module integrates common mode chokes and center-tapped transformers into a single compact package. It replaces discrete magnetic components to simplify board layout and improve manufacturing consistency.

Replacement Considerations

The H1100FNLT is a documented substitute variant with identical functional specifications but potentially different packaging options. Verify pin compatibility and mechanical footprint before substitution. Consult official cross-reference lists for other compatible modules from the same manufacturer series.