H1305NL

Overview

The H1305NL is a surface-mount LAN transformer module manufactured by Pulse Electronics, designed for 10/100Base-TX Ethernet applications. It features a dual-port configuration with an inductance of 350 uH and a maximum DC resistance of 0.75 Ohms. The component supports a frequency range from 1 MHz to 100 MHz and provides an insulation voltage rating of 1.5 kV. It operates within a temperature range of -40°C to +85°C. The device utilizes an unshielded design and is supplied in tube packaging.

Feature Summary

• Supports 10/100Base-TX Ethernet standards
• Dual-port signal transformation
• Surface-mount technology construction

Applications

• Ethernet network interface cards
• Computer motherboards
• Network switches

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Pulse Electronics or authorized distributors before procurement. Confirm that the unshielded variant meets electromagnetic interference requirements for the target enclosure. Ensure the operating temperature range aligns with the environmental conditions of the final assembly to guarantee long-term reliability.

Selection Notes

Select this component for standard 10/100 Mbps Ethernet connections requiring a compact surface-mount solution. The dual-port architecture simplifies circuit design for multi-port interfaces. Consider the lack of shielding when evaluating placement relative to sensitive high-frequency traces or other noise sources within the system layout constraints.

Part Context

This part belongs to the Pulse Electronics LAN transformers category, specifically engineered for signal integrity in copper-based networking hardware. It serves as a critical isolation and impedance matching element between the PHY chip and the RJ45 connector, ensuring compliant signal transmission over twisted-pair cabling infrastructure.

Replacement Considerations

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