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Product Detailed Parameters
- Description：PULSE XFMR 1CT:1CT TX 1CT:1CT RX
- Series：-
- Mfr：Pulse Electronics
- Package：Tube
- Transformer Type：LAN 10/100/1000 Base-T
- Inductance：360µH
- ET (Volt-Time)：-
- Turns Ratio - Primary:Secondary：1CT:1CT Transmitter, 1CT:1CT Receiver
- Mounting Type：Surface Mount
- Size / Dimension：0.700" L x 0.410" W (17.78mm x 10.41mm)
- Height - Seated (Max)：0.126" (3.20mm)
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
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Overview
The HM5149NL is a surface mount LAN pulse transformer manufactured by Pulse Electronics, designed for 10/100/1000 Base-T applications. It features a 1:1 turns ratio with separate center-tapped windings for transmitter and receiver paths. The component operates within a frequency range of 100 kHz to 200 MHz and provides an inductance of 360 µH. It supports an isolation voltage of 1.5 kV and functions reliably across a temperature range of -40°C to 85°C. The package dimensions are 17.78 mm in length, 9.91 mm in width, and 3.20 mm in maximum height.
Feature Summary
- Supports 10/100/1000 Base-T Ethernet standards
- Surface mount termination style for automated assembly
- Integrated center-tapped winding configuration
- High isolation voltage capability
Applications
- Ethernet network interface cards
- Industrial communication modules
- Consumer networking equipment
Procurement Notes
Verify the specific part number suffix against official documentation to confirm packaging variations such as tape and reel or cut tape options. Ensure that the selected variant matches the required manufacturing process and handling specifications for the production line. Cross-reference the manufacturer's latest datasheet to confirm current availability status and any potential obsolescence notices before finalizing procurement plans.
Selection Notes
Select this component based on its compatibility with Gigabit Ethernet physical layer requirements. The 360 µH inductance value must align with the circuit design specifications for signal integrity. Verify that the SMD package dimensions fit within the available PCB real estate constraints. Confirm that the operating temperature range meets the environmental conditions of the intended deployment scenario.
Part Context
This component belongs to Pulse Electronics' portfolio of LAN transformers. It serves as a critical interface between the Ethernet PHY chip and the external cable infrastructure. The device provides necessary impedance matching and common-mode noise rejection for high-speed data transmission.
Replacement Considerations
The HX5149NLT is documented as a related variant from the same manufacturer family. Verify functional equivalence and pinout compatibility before substitution.
