HM1234FNLT

Overview

The HM1234FNLT is a Pulse Electronics Ethernet transformer/choke designed for Surface Mount Technology (SMT) applications. It features a 1CT:1CT configuration for both transmit and receive channels, supporting 100Base-T networks. The component provides an isolation voltage of 1.5 kV and operates within a frequency range of 100 kHz to 200 MHz. It has an inductance of 350 uH and is constructed as an unshielded module with physical dimensions of 28.19 mm in length, 15.44 mm in width, and 5.72 mm in height.

Feature Summary

• Provides integrated pulse transformation and common mode choking for Ethernet data lines
• Supports standard 100Base-T network communication protocols
• Features SMD/SMT termination style for automated PCB assembly

Applications

• Ethernet network interface circuits
• 100Base-T compliant hardware designs
• Data communication equipment requiring galvanic isolation

Procurement Notes

Verify the specific suffix 'FNLT' against official datasheets to confirm tape-and-reel packaging and RoHS compliance status. Ensure the selected variant matches the required isolation voltage and inductance specifications for the target application. Cross-reference manufacturer part numbers with distributor catalogs to confirm availability and current production status before finalizing procurement plans.

Selection Notes

Select this component for designs requiring a compact, unshielded Ethernet transformer solution. The 1.5 kV isolation rating suits standard LAN interfaces. Verify that the 350 uH inductance aligns with the system's common mode noise rejection requirements. Confirm that the physical footprint fits the available PCB area without interference from adjacent components.

Part Context

This part belongs to the Pulse Electronics family of LAN transformers and chokes. These components are engineered specifically for high-volume consumer and industrial networking devices. The product line emphasizes reliability and compliance with industry standards for data transmission integrity and electrical safety in low-voltage digital environments.

Replacement Considerations

The HM1234FNL is a related variant; verify if the non-tape-and-reel packaging or other minor differences meet project requirements. Consult official substitution lists for direct equivalents with identical pinouts and electrical characteristics.

FAQ

Is the HM1234FNLT shielded?

No, the HM1234FNLT is specified as an unshielded module.

What is the isolation voltage rating?

The component provides an isolation voltage of 1.5 kV.