H1138NL

Overview

The H1138NL is a single-port LAN pulse transformer module designed for 10/100 Base-T applications. It features a 1:1 transmit turns ratio and supports surface mount installation. The component operates within a temperature range of 0°C to 70°C and complies with IEEE 802.3 specifications. It is RoHS compliant and compatible with transceivers from Broadcom, Intel, Micrel, National Semiconductor, ICS, and TDK.

Feature Summary

• Provides signal isolation and impedance matching for Ethernet data interfaces
• Supports 10/100 Base-T transmission standards
• Compatible with major industry transceiver manufacturers

Applications

• 10/100 Base-T network interface cards
• Ethernet switch ports
• Network adapter circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct packaging and variant selection. Confirm that the required RoHS compliance status aligns with project specifications. Cross-reference the datasheet revision date to validate electrical parameters before finalizing procurement orders.

Selection Notes

Select this component for designs requiring standard 10/100 Base-T connectivity with surface mount constraints. Ensure the operating temperature range meets the environmental requirements of the target application. Verify compatibility with the selected PHY transceiver chip from supported vendors such as Broadcom or Intel.

Part Context

This part belongs to Pulse Electronics' series of 10/100 Base-T single port transformer modules. It serves as a critical passive component in Ethernet physical layer interfaces, ensuring signal integrity and galvanic isolation between the MAC and PHY layers in standard networking equipment.

Replacement Considerations

Public confirmed substitute part numbers include H1012NL, H1019NL, H1042NL, H1086NL, H1089NL, PE-68515LNL, HX1148NL, and HX1178NL.