HX1188NL

Overview

The HX1188NL is a single-port LAN transformer module manufactured by Pulse Electronics, designed for surface-mount assembly. It supports 100Base-TX Ethernet applications without Power over Ethernet (PoE) functionality. The component features a 16-pin SMD package with dimensions of 12.7 mm length, 9.53 mm width, and 5.97 mm height. Key electrical specifications include a primary-to-secondary turns ratio of 1:1 for both transmitter and receiver paths, an inductance of 350 µH, and an isolation voltage of 1500 Vrms. It operates within a temperature range of -40°C to +85°C and complies with RoHS standards.

Feature Summary

• Provides electrical circuit isolation compliant with IEEE 802.3 standards for signal integrity
• Optimized for 100Base-TX non-PoE network transceivers
• Surface-mount design suitable for automated assembly processes

Applications

• 100Base-TX Ethernet network interface circuits
• LAN transceiver isolation modules
• Non-PoE data communication equipment

Procurement Notes

Verify the specific suffix designation during procurement, as variants such as HX1188NLT utilize different packaging formats like tape and reel compared to the standard tube packaging of the base model. Confirm that the selected variant matches the required reflow soldering profile and moisture sensitivity level for the intended manufacturing process. Ensure the application does not require PoE support, as this module is explicitly designated for non-PoE environments.

Selection Notes

Select the HX1188NL for designs requiring isolated magnetic coupling for 10/100 Mbps Ethernet links where PoE power delivery is unnecessary. Consider the physical footprint constraints of the 16-pin SMD package against available board space. Verify compatibility with the target transceiver's impedance requirements, noting the 1Ω impedance specification. Evaluate thermal management needs given the operational temperature range limits.

Part Context

This component belongs to the HX series of LAN discrete transformer modules from Pulse Electronics. These modules are engineered to provide robust isolation between the PHY chip and the network jack while maintaining signal quality. The product line serves various networking applications, with specific models tailored for different speed standards and power delivery configurations.

Replacement Considerations

Publicly confirmed substitute part numbers are not identified in the provided documentation. Cross-referencing with other single-port 100Base-TX non-PoE transformers requires verifying pinout compatibility, inductance values, and isolation ratings.