HN1102NL

Overview

The HN1102NL is a LAN discrete transformer module manufactured by Pulse Electronics, designed for 100BASE-TX Ethernet applications. It features a single-port configuration with surface-mount (SMD) termination and operates within a frequency range of 100 kHz to 100 MHz. The component provides an inductance of 350 µH and maintains a DC resistance of 0.65 Ω maximum. Electrical performance includes a turns ratio of 1:1, insertion loss of -1.1 dB maximum, and return loss of -20 dB minimum. It supports an insulation voltage of 1.5 kV and functions reliably between 0°C and +70°C.

Feature Summary

• Provides signal isolation and impedance matching for 100BASE-TX network interfaces
• Ensures signal integrity through specified insertion and return loss characteristics
• Offers electrical isolation via high insulation voltage rating

Applications

• 100BASE-TX Ethernet network interface circuits
• Local Area Network (LAN) port implementations
• Datacom equipment requiring non-PoE signal transformation

Procurement Notes

Verify the specific manufacturer part number against official Pulse Electronics documentation to confirm compatibility. Ensure the received component matches the required SMD package dimensions and pinout configuration. Check for RoHS compliance status if environmental regulations apply to the assembly process. Confirm that the insulation voltage and operating temperature ranges meet the design specifications before integration.

Selection Notes

Select this component for designs requiring a single-port solution for 100 Mbps Ethernet connections. Consider the physical footprint constraints as it utilizes a compact SMD-16 package. Evaluate the thermal performance requirements against the 0°C to +70°C operating range. Ensure the circuit design accommodates the specified inductance and DC resistance values for proper signal transmission.

Part Context

The HN1102NL belongs to the family of audio and signal transformers offered by Pulse Electronics. It serves as a critical passive component in networking hardware, facilitating the connection between Ethernet PHY chips and external cabling. This module type is distinct from power transformers, focusing solely on data signal integrity and galvanic isolation for standard twisted-pair networks.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.