H1102

Overview

The H1102 is a single-port LAN transformer module manufactured by Pulse Electronics, designed for 100Base-TX applications. It features surface-mount technology (SMD/SMT) with dimensions of 12.7 mm in length, 9.53 mm in width, and 6.09 mm in height. The component operates within a frequency range of 100 kHz to 100 MHz and provides an inductance of 350 uH. It supports an insulation voltage of 1.5 kV and functions at temperatures between 0°C and +70°C. The unit has a winding ratio of 1:1 and includes a center tap on the primary side. The device is unshielded and does not support Power over Ethernet (PoE).

Feature Summary

• Designed specifically for 100Base-TX network interfaces.
• Single-channel configuration with integrated center tap.
• Surface-mount package suitable for automated assembly.

Applications

• 10/100 Mbps Ethernet network interface cards.
• Ethernet switch port circuits.
• Computer motherboard LAN connections.

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as H1102NL and H1102NLT exist with different packaging formats like tubes or tape-and-reel. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary by region and production batch. Ensure the selected variant matches the required mounting style for the target PCB design.

Selection Notes

Select this component for standard 100Base-TX designs requiring galvanic isolation without PoE capabilities. Compare physical footprint requirements against available SMD packages. Verify that the 350 uH inductance and 1.5 kV isolation voltage meet the system's electrical safety and signal integrity specifications. Consider thermal management within the specified 0°C to +70°C operating range.

Part Context

This part belongs to Pulse Electronics' LAN transformer portfolio, which provides magnetic isolation for Ethernet data lines. These modules typically integrate common mode chokes and coupling capacitors to ensure signal quality and protect downstream circuitry from electrical surges and interference in local area networks.

Replacement Considerations

Check for direct substitutes within the same product family, such as H1102NL or H1102NLT, ensuring identical pinout and electrical parameters. Cross-reference with other manufacturers' 100Base-TX transformers if supply constraints exist, verifying compatibility with existing schematic designs.