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Product Detailed Parameters
- Description：MDL,SIN,1GD,1:1,SMT
- Series：-
- Mfr：Pulse Electronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 HM5149NLT is a LAN pulse transformer manufactured by Pulse Electronics, designed for 10/100/1000 Base-T Ethernet applications. It features a single channel configuration with a 1CT:1CT turns ratio for both transmitter and receiver circuits. The component has an inductance of 360µH and supports a frequency range from 1 MHz to 125 MHz. It utilizes surface mount technology (SMD/SMT) with a 24-pin package measuring 17.78 mm in length, 10.41 mm in width, and 3.2 mm in height. The device operates within a temperature range of -40°C to +85°C and provides 1.5 kV isolation voltage.
Feature Summary
- Supports 10/100/1000 Base-T Ethernet standards
- Surface mount construction for automated assembly
- High insulation voltage capability
- Wide operating temperature range
Applications
- Gigabit Ethernet network interfaces
- Computer motherboard LAN ports
- Network switch port modules
- Industrial communication equipment
Procurement Notes
Verify the exact physical dimensions against the latest official datasheet, as width specifications may vary between 9.91 mm and 10.41 mm across different documentation sources. Confirm the packaging type, as some listings indicate tube packaging while others suggest tape and reel options for similar variants. Ensure compliance with RoHS3 and REACH regulations required for your specific manufacturing region before finalizing procurement orders.
Selection Notes
Select this component when a single-channel LAN transformer is required for Gigabit Ethernet designs. The 360µH inductance value is critical for meeting impedance matching requirements in 1000Base-T circuits. Consider the 24-pin SMD footprint for PCB layout compatibility. Verify that the 1CT:1CT winding configuration aligns with the specific PHY chip interface requirements of the target system design.
Part Context
This part belongs to the H5149 series of LAN transformers from Pulse Electronics. It is functionally related to the HX5149NL and HX5149NLT models, sharing similar electrical characteristics for 10/100/1000 Base-T applications. The HM5149NLT variant specifically denotes the surface mount package form factor used in modern high-density electronic assemblies.
Replacement Considerations
The HX5149NL and HX5149NLT are documented substitutes with identical electrical parameters. Verify pin-to-pin compatibility and mechanical footprint dimensions before substitution.
