OverviewAll product unitsProduct unitPassive ComponentsProduct groupEMC ComponentsProduct familyCommon Mode Chokes for Extra-low Voltage and Data LinesProduct seriesWE-CNSW HF SMT Common Mode Line Filter

WE-CNSW HF SMT Common Mode Line Filter EXTENDED

WE-CNSW HF SMT Common Mode Line Filter
 Size Dimen­sions
EXT. 0504
EXT. 0805

Characteristics

  • Current compensated data line filter
  • High common mode noise suppression at high frequencies
  • Small influence on high speed signals through winding symmetry
  • Climatic category 40/105/21 (Size 0504)
  • Climatic category 40/125/21 (Size 0805)
  • Flammability corresponding to UL 94 V-0

Reference Designs

  • RD022 GB PoE+-Ethernet-USB“ adapter for industrial use with an EMC perspective

Applications

  • USB 3.0
  • USB 2.0
  • HDMI
  • LVDS
  • High-Speed data lines
  • IEEE 1394 (Firewire)

USB Type-C. 24 reasons to connect with us.

Würth Elektronik offers the complete product range from connectors, components for filtering of EMI noise, ESD surge protection as well as AC/DC to DC/DC power conversion for USB 3.1. All information here.

All Information here

Products

All
0504
0805
Order Code Data­sheet Simu­lation DownloadsL
(nH)
Z @ 100 MHz
(Ω)
IR
(mA)
VR
(V)
VT
(V (AC))
Filter BagFilter StickDesign Kit Samples
NEW7442335600SPEC
9 files 100 60 600 20 12582931061
82931101
82931060
82931100
744230
NEW7442335900SPEC
8 files 170 90 500 20 125744230
NEW744233670SPEC
8 files 92 67 320 50 125829993BAG
744230
NEW744233900SPEC
8 files 131 90 280 50 125744230
NEW744233121SPEC
8 files 167 120 280 50 125744230
Order Code Data­sheet Simu­lation
NEW7442335600SPEC
NEW7442335900SPEC
NEW744233670SPEC
NEW744233900SPEC
NEW744233121SPEC
Samples
Order Code Data­sheet Simu­lation DownloadsL
(nH)
Z @ 100 MHz
(Ω)
IR
(mA)
VR
(V)
VT
(V (AC))
Filter BagFilter StickDesign Kit Samples

Compliance with AEC-Q200

Highest reliability in terms of

  • EMC compatibility
  • Solderability
  • Humidity
  • Temperature influences

HF version for high data rates

While the WE-CNSW series can work up to USB 2.0 interfaces, the WE-CNSW HF was designed to have wider frequency band to be able to work with the newest high-speed interfaces.

Fully automated production

Thanks to the fully automated process, a high degree of winding symmetry and constantly high quality can be achieved. The winding symmetry ensures low parasitic effects and therefore high signal integrity.

Common and Differential Mode Behavior

When the common mode component of a signal tries to pass through the choke, it encounters a high impedance. This is caused by the magnetization of the core and the resulting mutual inductance in the coil.

In contrast to the common mode behavior, the differential mode signal will see almost no impedance, which can be explained by the magnetic field compensation in the core. If the core is not magnetized, there is no mutual inductance so that the useful signal can pass through.

Speed up your design-in process!

The following tools and libraries make component search and selection easier for you

REDEXPERT

The online platform for easy component selection, simulation and design-in with high-precision component and circuit models.

  • Common Mode Attenuation and Impedance
  • Differential Mode Attenuation and Impedance
  • Temperature Derating

Component Libraries

  • EDA models: Altium, Cadstar, Cadence and Eagle
  • CAD files: IGS and STP

Electric models

  • S-Parameter, measured with 4 ports and high accuracy equipment
  • Pspice
  • LTspice

More Tools and Support

Design-in Support

With the Würth Elektronik Application Guide, you can find useful information about interfaces like USB, Ethernet, LVDS and a few more.

Or use one of the various ways to get in touch with us. Feel free to contact us with your questions. Our technical specialists will be happy to help and advise you.

Temperature Derating

How to interpret the temperature derating curve?

Check the data sheets for operating temperature. All derating curves for our CMC can be found in REDEXPERT.

TR = Rated Temperature
Tmax = Upper limit of the operating temperature and max. temperature allowed
ΔT = Tmax – TR

Example of use:
The maximum abient temperature with maximum current capability is 85 °C over this temperature the current capabilities sink. For a higher ambient temperature the maximum current can be read easily from the derating curve with the help of the chart marker.

Bifilar vs. Sectional Winding

Bifilar winding shows the lowest attenuation in differential mode. These chokes are recommended for data lines, where a high isolation is not needed and some high speed signals are involved.

Sectional winding shows the highest attenuation in differential mode. This chokes are recommended for power lines, where a high isolation is mandatory, and the power delivery is happening at low frequency.

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