H1164NL

Overview

The H1164NL is a LAN 10/100 Base-T pulse transformer module manufactured by Pulse Electronics. Designed for surface mount technology, it features a 40-pin SMD package measuring 28.58mm x 12.19mm with a height of 5.84mm. The component supports 10/100BASE-TX applications in automotive MDI/MDIX environments. It operates within a temperature range of 0°C to +70°C and provides an isolation voltage of 1.5kVrms. Key electrical parameters include an inductance of 350μH, a turns ratio of 1:1, insertion loss of -1dB, and return loss of -18dB. The device functions at frequencies between 100KHz and 100MHz.

Feature Summary

• Integrated LAN 10/100 Base-T pulse transformer module optimized for automotive MDI/MDIX applications
• Surface mount construction with a compact 40-pin footprint suitable for automated assembly
• High isolation capability rated at 1.5kVrms for signal integrity protection
• Compliant with RoHS3 standards and REACH regulations for environmental safety

Applications

• Automotive Ethernet controller interface circuits
• MDI and MDIX port implementations in vehicle networks
• 10/100BASE-TX physical layer connectivity modules

Procurement Notes

Verify the specific suffix designation when ordering, as the base part number may correspond to different packaging options such as tape and reel or cut tape. Confirm that the required moisture sensitivity level (MSL 4) aligns with your facility's reflow soldering capabilities and storage conditions. Ensure the selected variant matches the exact pin configuration and mechanical dimensions required for your PCB layout to avoid integration issues during production.

Selection Notes

Select this component for designs requiring dedicated 10/100BASE-TX isolation in automotive contexts. The 350μH inductance value supports standard Ethernet signaling requirements. Consider the 40-pin SMD package size when determining board space allocation. Verify compatibility with the target PHY chip's pinout and impedance matching specifications before finalizing the design to ensure optimal signal performance and compliance with automotive network standards.

Part Context

This component belongs to the H1164 series of LAN transformers from Pulse Electronics. It is specifically engineered for high-reliability automotive networking applications where robust isolation and compact form factors are critical. The module integrates multiple windings into a single surface-mount package, simplifying the bill of materials and reducing assembly complexity compared to discrete transformer solutions.

Replacement Considerations

The H1164NL serves as a direct replacement for previous iterations or variants within the same functional family. When substituting, verify that the alternative part maintains identical pin assignments, inductance values, and isolation ratings. Cross-reference mechanical dimensions to ensure fitment within the existing enclosure and PCB footprint without requiring layout modifications.