H1267NL

Overview

The H1267NL is an unshielded LAN transformer module manufactured by Pulse Electronics, designed for surface mount (SMD/SMT) applications. It supports 100Base-TX Ethernet standards and features a single channel configuration. The component operates within a frequency range of 100 kHz to 100 MHz and provides an insulation voltage rating of 1.5 kV. Electrical specifications include an inductance of 350 uH, a primary coil impedance of 0.65 Ohms, and a secondary coil impedance of 16 Ohms. The unit functions reliably across a temperature range of 0°C to +70°C. Physical dimensions are 12.7 mm in length, 9.65 mm in width, and 6 mm in height.

Feature Summary

• Supports 100Base-TX non-PoE network protocols
• Surface mount construction for automated assembly
• High isolation capability with 1.5 kV insulation rating

Applications

• 100Base-TX Ethernet network interfaces
• Non-PoE telecommunication equipment
• Signal transformation modules

Procurement Notes

Verify the specific ordering suffix when sourcing this component, as packaging variations such as tube or reel formats may exist within the product family. Confirm that the required quantity aligns with standard factory pack sizes to avoid partial reel issues. Ensure the procurement specification explicitly requests the SMD variant to distinguish it from through-hole alternatives. Cross-reference the manufacturer part number against official distributor catalogs to validate current availability status before finalizing orders.

Selection Notes

Engineers should select the H1267NL for designs requiring 100Base-TX signal isolation without Power over Ethernet requirements. The unshielded design necessitates careful PCB layout to manage electromagnetic interference in dense circuitry. Verify that the 0.65 Ohm primary impedance matches the driver circuit capabilities. Consider the physical footprint constraints relative to the 12.7 x 9.65 mm package size during the mechanical integration phase.

Part Context

This component belongs to the Pulse Electronics LAN Transformers series, specifically categorized under Audio & Signal Transformers. It serves as a passive isolation device for digital data transmission lines. The product line focuses on providing reliable signal coupling for various Ethernet speeds, ensuring data integrity between the MAC layer and the physical medium.

Replacement Considerations

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