WE-LAN LAN Transformer
LTSpice files
Characteristics
- Suitable for industrial temperatures from –40 °C up to +125 °C
- Different version available from 1.5 kV isolation to 6 kV.
- HPLE version
- Additional CMC for higher attenuation
- Non PoE, PoE and PoE++ up to 2 A
- PoE up to 150 W and speeds up to 1 Gbit/s
- Available in SMT
- Compliant with standards: IEEE 802.3u, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3at and IEEE 802.3bt
- UL Recognized
- Reference Designs
- RD016 Reference Design Gigabit Ethernet Front End
- RD022 GB PoE+-Ethernet-USB“ adapter for industrial use with an EMC perspective
- RD041 Design of a Single Pair Ethernet System with Power over Data Lines (SPoE)
Applications
- Compatible to Industrial Ethernet systems like EtherCAT or Profinet
- Compliant with most IC’s for Ethernet applications such as Microchip, Texas Instruments, Broadcom, Linear Technology
- Router, switches, sensors, robotics, automation, IP cameras, IoT applications
Products
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Reset allOrder Code | Datasheet | Simulation | Downloads | Status | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | VT(V (RMS)) | Mount | L(µH) | Design Kit | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 749080010 | SPEC2.5/5G Base-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate2.5/5G Base-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance200 µH | Design Kit – | –Check availability | ||
749082010 | SPEC2.5/5G Base-T, 1, 4PPoE (up to 1500 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate2.5/5G Base-T | Ports1 | PoE4PPoE (up to 1500 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance120 µH | Design Kit – | –Check availability | |||
 | 7490100110A | SPEC10/100BASE-TX, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-TX | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature 0 °C up to +70 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490100111A | SPEC10/100BASE-TX, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-TX | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit | –Check availability | ||
 | 749013011A | SPEC10/100BASE-TX, 1, PoE (up to 350 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-TX | Ports1 | PoEPoE (up to 350 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490100161A | SPEC10/100BASE-TX, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-TX | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +125 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit | –Check availability | ||
 | 7490120110 | SPEC10/100BASE-TX, 1, PoE+ (up to 720 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-TX | Ports1 | PoEPoE+ (up to 720 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance120 µH | –Check availability | |||
 | 7490220120 | SPEC10/100/1000BASE-T, 1, 4PPoE (up to 350 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100/1000BASE-T | Ports1 | PoE4PPoE (up to 350 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490220121 | SPEC10/100/1000BASE-T, 1, 4PPoE (up to 600 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100/1000BASE-T | Ports1 | PoE4PPoE (up to 600 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490220122 | SPEC10/100/1000BASE-T, 1, 4PPoE (up to 1000 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100/1000BASE-T | Ports1 | PoE4PPoE (up to 1000 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 749020100A | SPEC10/100/1000BASE-T, 0.5, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100/1000BASE-T | Ports0.5 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490220115 | SPEC10/100/1000BASE-T, 1, 4PPoE (up to 800 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100/1000BASE-T | Ports1 | PoE4PPoE (up to 800 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 749010012A | SPEC10/100BASE-TX, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-TX | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature 0 °C up to +70 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490140122B | SPEC10/100BASE-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage4500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490140123B | SPEC10/100BASE-T, 1, PoE (up to 350 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-T | Ports1 | PoEPoE (up to 350 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage4500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 749024015C | SPEC10/100/1000BASE-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100/1000BASE-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490140117C | SPEC10/100BASE-TX, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-TX | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage2500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490140142 | SPEC10/100BASE-T, 1, PoE (up to 350 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-T | Ports1 | PoEPoE (up to 350 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage4000 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490140125 | SPEC10/100BASE-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490140124 | SPEC10/100BASE-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490140141 | SPEC10/100BASE-T, 1, PoE (up to 350 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-T | Ports1 | PoEPoE (up to 350 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage4000 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490140123 | SPEC10/100BASE-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490140140 | SPEC10/100BASE-T, 1, PoE (up to 350 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100BASE-T | Ports1 | PoEPoE (up to 350 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage4000 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 749023113C | SPEC10/100/1000BASE-T, 1, PoE (up to 350 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100/1000BASE-T | Ports1 | PoEPoE (up to 350 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 749020112B | SPEC10/100/1000BASE-T, 1, non-PoE PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate10/100/1000BASE-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 749020010A | SPEC1000 Base-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000 Base-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit | –Check availability | ||
 | 749020011A | SPEC1000 Base-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000 Base-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionYes | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit | –Check availability | ||
 | 749020111A | SPEC1000 Base-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000 Base-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature 0 °C up to +70 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit | –Check availability | ||
 | 749023010A | SPEC1000 Base-T, 1, PoE (up to 350 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000 Base-T | Ports1 | PoEPoE (up to 350 mA) | Improved Common Mode RejectionNo | Operating Temperature 0 °C up to +70 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit | –Check availability | ||
 | 7490220123 | SPEC1000 Base-T, 1, 4PPoE (up to 1500 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000 Base-T | Ports1 | PoE4PPoE (up to 1500 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance180 µH | Design Kit – | –Check availability | ||
 | 749020022A | SPEC1000 Base-T, 2, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000 Base-T | Ports2 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490240120 | SPEC1000 Base-T, 1, 4PPoE (up to 350 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000 Base-T | Ports1 | PoE4PPoE (up to 350 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage4000 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 749020023A | SPEC1000BASE-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000BASE-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490240121 | SPEC1000 Base-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000 Base-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490240141 | SPEC1000 Base-T, 1, 4PPoE (up to 350 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000 Base-T | Ports1 | PoE4PPoE (up to 350 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage4000 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490240140 | SPEC1000 Base-T, 1, 4PPoE (up to 350 mA) | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000 Base-T | Ports1 | PoE4PPoE (up to 350 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage4000 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability | ||
 | 7490240142 | SPEC1000 Base-T, 1, non-PoE | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Data rate1000 Base-T | Ports1 | PoEnon-PoE | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +85 °C | Insulation Test Voltage4000 V (RMS) | MountSMT | Inductance350 µH | Design Kit – | –Check availability |
Availability Forecast
WE item number: –
VPELead time
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| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
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Reference Designs
GB-Ethernet Front End
Reference Designs
GB-Ethernet Front End
- Based on Microchip's EVB-LAN7800LC evaluation board.
- Circuit built on a 4-layer PCB.
- Powered via the USB interface.
- Firmware enables real-time measurements of data rate and bit error rate.
- The electronics board offers two interfaces:
- USB Type C™ (USB 3.1)
- 1 Gigabit RJ45/Ethernet interface
GB PoE+ Ethernet-USB Adapter
GB PoE+ Ethernet-USB Adapter
- Based on the reference design of a 1 Gbit/s Ethernet USB adapter.
- Original design lacked PoE functionality.
- Incorporates Power over Ethernet Plus (PoE+) capability.
- GB PoE+ Ethernet USB Adapter offers three interfaces:
- USB Type-C (USB 3.1)
- RJ45 1 Gbit/s Ethernet interface with integrated PoE function
- Connector for a DC/DC converter with an adjustable output voltage of 6 to 18 V and a maximum output power of 25 W.
Basics of GB-Ethernet interface
Basics of GB-Ethernet interface
- Magnetics module (E.g., WE-LAN): This consists of a transformer and common mode choke (CMC). It reduces common-mode currents, which are unwanted electrical currents that flow in the same direction on both conductors of a twisted-pair cable. Common-mode currents can interfere with the differential signal carrying the data.
- Bob Smith termination: This termination circuit, which includes a capacitor and four resistors, is connected between the differential signal pairs and ground. It reduces susceptibility to interference from unused wires on the RJ45 connector by providing a path for common-mode currents to flow to ground.
Design structure of GB-Ethernet interface
Design structure of GB-Ethernet interface
The GB-Ethernet USB adapter was developed based on the EVBLAN7800LC Evaluation Board from Microchip. The board is available in two different variants: discrete and integrated. The integrated design combines the functionality of the discrete components into fewer, more streamlined modules. This integration results in a potentially more reliable design, reducing PCB space and simplifying assembly.
Discrete Solution Components
WE-LAN
A separate local area network transformer module.
WR-MJ
A discrete RJ45 Ethernet connector.
WE-TVS
Transient voltage suppressor.
Integrated Solution Components
WE-RJ45LAN
Integrates the RJ45 connector and the transformer (which includes the functions of WE-LAN and the WR-MJ).
WCAP-CSMH
Capacitors for additional filtering and stabilization.
WE-PoE, WE-PoEH, WE-PoE+
Integrate the functionalities of the discrete components like transformers, common mode chokes, and possibly other filtering/protective elements.
WE-SL5
Common mode chokes.
Discrete LAN
WE-LAN LAN Transformer
10/100/1000Base-T
WE-LAN 10G Transformer
10Gbit Base-T
WE-LAN AQ Transformer
10/100/1000Base-T
WE-STST Super Tiny Signal Transformer
10/100/1G/10G Base-T
WE-BMS Transformer
for Battery Management Systems
WE-PLC Transformer
Integrated LAN
WE-RJ45LAN
WE-RJ4510G
WE-RJ45LAN (THR)
Through Hole Reflow
WE-LANMX
IP67 10/100Base-T
Frequently asked questions
![Circuit, powered device and powered source]( "powered-device-powered-source-equipment")
- PSE (Power Source Equipment): This is the device that supplies power over the Ethernet cable. In a PoE system, a switch or injector acts as the PSE.
- PD (Powered Device): This is the device that receives power and data over the Ethernet cable. Examples of PoE-powered devices include IP cameras, VoIP phones and wireless access points.
Assortments
Articles from this product series can be found in the following assortments:
