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Würth Elektronik WE-LAN Transformers

Würth Elektronik WE-LAN Transformers are fully compliant with IEEE standards and designed with a robust internal layout for a long life. These surface-mount devices feature extended temperature ranges up to +125°C and are compatible with industrial Ethernet systems. Würth Elektronik WE-LAN Transformers are ideally suited for applications such as the Internet of Things (IoT), hubs, routers, switches, and IP cameras.

Features

  • Compliant with IEEE 802.3 standards 802.3af, 802.3u, 802.3ab, 802.3at, 802.3bt, and 802.3an
  • SMT design
  • 120µH to 350µH inductance range
  • 1:1 ±2% (±3%) turns ratio
  • Return loss
    • -18dB minimum 30MHz
    • -14dB minimum 60MHz
    • -13dB minimum 60MHz (749020112B)
    • -12dB minimum 80MHz
    • -10dB minimum 100MHz
  • -1.1dB typical insertion loss at 1MHz to 100MHz
  • -38dB typical crosstalk at 1MHz to 100MHz
  • -38dB typ. differential to common-mode rejection at 1MHz to 100MHz
  • 749020112B:
    • 1:1 ±3% turns ratio
    • -1dB typical insertion loss at 1MHz to 100MHz
    • -35dB typical differential to common-mode rejection at 1MHz to 30MHz
    • -33dB minimum crosstalk at 1MHz to 60MHz

Applications

  • Ethernet
  • Power over Ethernet (PoE)
  • 1 Gigabit Ethernet (GbE)
  • Hub, router, and switches
  • Compliant with most ICs for Ethernet use, such as Microchip, Texas Instruments, Broadcom, and Linear Technology

WE-LAN Types

LAN Transformers offer PoE up to 150W at speeds up to 1Gbit/s in an operating temperature range of -40°C to +125°C.

10Gbit Base-T Transformers provide PoE up to 150W at speeds up to 10Gbit/s in an operating temperature range of -40°C to +85°C.

Automated Quality (AQ) Transformers are manufactured by a 100% automatic production with Ethernet speeds up to 1Gbit/s and a low-profile height of 4mm. WE-LAN AQ components improve return loss and crosstalk properties in a temperature range of -40°C to +85°C.

IC Reference Guide

Part Number      IC Reference
7490100111A      DP83822
7490120110        DP83822
749013011          DP83822
74930000            DP83TD510E
74930030            ADIN1110

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Würth Elektronik Ethernet Solutions

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Associated Tool

Würth Elektronik REDEXPERT AC Loss Tool

Online software tool that simulates power inductors for precision comparison.

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Publicado: 2015-08-26 | Atualizado: 2025-10-10