HMU1288NL

Overview

The HMU1288NL is a dual common mode choke transformer manufactured by Pulse Electronics, designed for surface mount applications. It features an inductance of 150µH and supports a turns ratio of 1CT:1C. The component provides an insulation voltage rating of 2.5kVAC, ensuring robust electrical isolation between circuits. It operates within a temperature range of -40°C to +105°C and utilizes SMD/SMT termination types for automated assembly integration.

Feature Summary

• Dual channel configuration for simultaneous signal processing
• High insulation voltage rating for enhanced safety isolation
• Surface mount technology compatible design
• Common mode noise suppression capability

Applications

• Ethernet port protection circuits
• Data line filtering systems
• Industrial communication interfaces
• Network interface card designs

Procurement Notes

Verify the specific suffix designation against official documentation to confirm exact packaging and tape specifications. Ensure that the selected variant matches the required inductance tolerance and physical footprint dimensions for the target PCB layout. Cross-reference the manufacturer's latest datasheet to confirm compliance with current environmental standards and RoHS directives before finalizing procurement orders.

Selection Notes

Select this component when high isolation voltage and common mode rejection are critical for network signal integrity. Evaluate the thermal performance requirements against the specified operating temperature range to ensure reliability under load. Confirm that the surface mount package dimensions align with the available board space and that the inductance value meets the impedance matching requirements of the connected transmission lines.

Part Context

This part belongs to the Pulse Electronics LAN transformer family, specifically engineered for data communication applications. It serves as a passive component essential for maintaining signal quality and protecting downstream circuitry from electromagnetic interference and voltage transients in structured cabling environments.

Replacement Considerations

Consult official substitution lists for direct equivalents. Verify pin compatibility and electrical parameters before integrating alternative components.

FAQ

What is the primary function of the HMU1288NL?

It functions as a dual common mode choke transformer designed to suppress noise and provide isolation in data transmission lines.

Does this component support surface mount assembly?

Yes, it is designed with SMD/SMT termination types for automated surface mount technology processes.