LAN Transformers and Modular Jack Connectors

Würth Elektronik's LAN transformers offer multiple Ethernet solutions

Image of Würth Elektronik's LAN Transformers and Modular Jack ConnectorsWürth Elektronik's WE-LAN transformers are designed with at least one transformer and one common mode choke in each channel. The LAN transformer portfolio consists of the WE-LAN series with Power over Ethernet (PoE) up to 150 W and speeds up to 1 Gbit/s. The WE-LAN 10 G transformers with 10GBase-T and PoE+ over four pairs up to 150 W. The WE-LAN AQ transformers are manufactured by a fully automated process with Ethernet speeds up to 1 Gbit/s.

Würth Elektronik's WR-MJ modular jacks offer a broad range of connector types that comply with Ethernet and other communications standards. Modular jack connectors are the connector of choice for local data communication. The WR-MJ connectors are available in multiple versions, ranging from plastic to shielded options in vertical, horizontal, 45 degree, and 47.5 degree orientations. The jack design is in accordance with FCC regulation and compatible with IEEE standards IEEE 802.3u, 802.3z (8P8C RJ45) and PoE-compatible according to IEEE 802.3af, 802.3at (8P8C RJ45).

Würth Elektronik also offers the WE-RJ45 LAN transformers built with an RJ45 connector with integrated transformer/common mode choke available in multiple configurations, THT and SMT, and with or without LEDs. The WE-RJ45 LAN features PoE up to 50 W and speeds up to 10 Gbit/s.

LAN Transformer Features
  • Compliant with IEEE 802.3 standards: 802.3af, 802.3u, 802.3ab, 802.3at, 802.3bt, 802.3an
  • SMT
  • Inductance of 120 µH up to 350 µH
  • 1:1 ±2% turns ratio
  • -1.1 dB typ. insertion loss at 1 MHz to 100 MHz
  • -38 dB typ. crosstalk at 1MHz to 100MHz
  • -38 dB typ. differential to common-mode rejection at 1 MHz to 100 MHz
  • Return loss:
    • -18 dB min. 30 MHz
    • -14 dB min. 60 MHz
    • -12 dB min. 80 MHz
    • -10 dB min. 100 MHz
WR-MJ Modular Jack Connector Features
  • Jack design in accordance with FCC regulation
    • Mates all FCC plugs
  • 4P4C, 6P2C, 6P4C and 8P8C configurations
  • Stacking up to 2 x 6
  • Ethernet, Cat 3, Cat 5, Cat 6, and Cat 6a
  • Discreet solution for Ethernet protocol (8P8C RJ45)
    • Smaller footprint
    • High flexibility in PCB design
    • THR compatibility
    • Potentially better crosstalk performances
WE-RJ45 LAN Features
  • RJ45 connector with integrated transformer/common mode choke
  • PoE up to 50 W and speeds up to 10 Gbit/s
  • Available in SMT and THT 
  • Compliant with standards: IEEE 802.3u, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3at, and IEE 802.3bt
  • Improved common mode rejection (CMRR) due to additional NiZn cores 

Modular Connector Jacks With Magnetics

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
CONN JACK 1PORT PCB7499611420CONN JACK 1PORT PCB0 - Immediate$16.64View Details
CONN JACK 1PORT PCB7499711421CONN JACK 1PORT PCB0 - Immediate$19.08View Details
CONN JACK 1PORT PCB7499811420CONN JACK 1PORT PCB0 - Immediate$19.08View Details
CONN JACK 1PORT PCB7499611422CONN JACK 1PORT PCB0 - Immediate$23.94View Details
CONN JACK 1PORT PCB7499611423CONN JACK 1PORT PCB0 - Immediate$25.37View Details
CONN JACK 1PORT PCB7499611424CONN JACK 1PORT PCB0 - Immediate$25.37View Details
CONN JACK 1PORT PCB7499811120CONN JACK 1PORT PCB0 - Immediate$22.84View Details

Modular Jacks

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
CONN MOD JACK 6P6C VERT UNSHLD615006138521CONN MOD JACK 6P6C VERT UNSHLD0 - Immediate$0.71View Details
CONN MOD JACK 8P8C R/A SHIELDED615008140621CONN MOD JACK 8P8C R/A SHIELDED0 - Immediate$2.42View Details
CONN MOD JACK 8P8C VERT SHIELDED615008138221CONN MOD JACK 8P8C VERT SHIELDED0 - Immediate$2.42View Details
CONN MOD JACK 8P8C VERT SHIELDED615008140421CONN MOD JACK 8P8C VERT SHIELDED0 - Immediate$2.57View Details
CONN MOD JACK 8P8C R/A SHIELDED615008137421CONN MOD JACK 8P8C R/A SHIELDED0 - Immediate$2.57View Details
CONN MOD JACK 8P8C ANGLED SHLD615008145121CONN MOD JACK 8P8C ANGLED SHLD0 - Immediate$3.21View Details
CONN MOD JACK 8P8C ANGLED SHLD615008145221CONN MOD JACK 8P8C ANGLED SHLD0 - Immediate$3.98View Details
MODULAR COMM JACK DUAL 8P8C615016137721MODULAR COMM JACK DUAL 8P8C0 - Immediate$4.31View Details
CONN MOD JACK 8P8C VERT SHIELDED615008138321CONN MOD JACK 8P8C VERT SHIELDED0 - Immediate$4.59View Details
CONN MOD JACK 8P8C VERT UNSHLD615008144221CONN MOD JACK 8P8C VERT UNSHLD0 - Immediate$1.12View Details
CONN MOD JACK 4P4C R/A UNSHLD615004143821CONN MOD JACK 4P4C R/A UNSHLD0 - Immediate$1.16View Details
CONN MOD JACK 6P6C R/A SHIELDED615006141121CONN MOD JACK 6P6C R/A SHIELDED0 - Immediate$1.16View Details
CONN MOD JACK 8P8C VERT UNSHLD615008138021CONN MOD JACK 8P8C VERT UNSHLD0 - Immediate$1.71View Details
WR-MJ_MODULAR JACKS_MID-MOUNT_SM634108150321WR-MJ_MODULAR JACKS_MID-MOUNT_SM0 - Immediate$3.31View Details
WR-MJ_MODULAR JACKS_MID-MOUNT_TH615108150221RWR-MJ_MODULAR JACKS_MID-MOUNT_TH0 - Immediate$3.89View Details
CONN MOD JACK 8P8C R/A SHIELDED634008137521CONN MOD JACK 8P8C R/A SHIELDED0 - Immediate$3.07View Details
CONN MOD JACK 8P8C R/A SHIELDED61500814221CONN MOD JACK 8P8C R/A SHIELDED0 - Immediate$2.28View Details
CONN MOD JACK 8P8C R/A SHIELDED615008142621CONN MOD JACK 8P8C R/A SHIELDED0 - Immediate$2.45View Details
CONN MOD JACK 8P8C R/A SHIELDED615016137621CONN MOD JACK 8P8C R/A SHIELDED0 - Immediate$3.70View Details
CONN MOD JACK 8P8C R/A SHIELDED634008149821CONN MOD JACK 8P8C R/A SHIELDED0 - Immediate$8.22View Details

Pulse Transformers

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
TRANSFORMER LAN 10/100 POE SMD749013011TRANSFORMER LAN 10/100 POE SMD303 - Immediate$2.45View Details
TRANS WE-LAN 10/100 POE SMD749013011ATRANS WE-LAN 10/100 POE SMD0 - Immediate$3.92View Details
TRANSFORMER LAN 10/100 SMD7490100111ATRANSFORMER LAN 10/100 SMD0 - Immediate$3.98View Details
WE-LAN 10/100/1000 BASE-T SMT TR749020111AWE-LAN 10/100/1000 BASE-T SMT TR0 - Immediate$3.96View Details
XFRMR LAN 1000 BASE-T 1:1 350UH749020023AXFRMR LAN 1000 BASE-T 1:1 350UH0 - Immediate$5.97View Details
10/100 BASE-T SMD TRANSFORMER 1749012011010/100 BASE-T SMD TRANSFORMER 10 - Immediate$5.12View Details
TRANSFORMER LAN 10/100/1000 SMD749020100TRANSFORMER LAN 10/100/1000 SMD0 - Immediate$3.57View Details
PULSE XFMR 1CT:1CT TX 1CT:1CT RX7490220120PULSE XFMR 1CT:1CT TX 1CT:1CT RX0 - Immediate$5.94View Details
TRANSFORMER LAN 10/100/1000 POE749022011TRANSFORMER LAN 10/100/1000 POE94 - Immediate$6.46View Details
PULSE XFMR 1CT:1CT TX 1CT:1CT RX7490220123PULSE XFMR 1CT:1CT TX 1CT:1CT RX0 - Immediate$6.47View Details

Kits

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
DESIGN KIT WE-RJ45LAN LAN TRANSF749945DESIGN KIT WE-RJ45LAN LAN TRANSF0 - Immediate$239.33View Details
Published: 2023-05-22