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

WE-CNSW HF SMT Common Mode Line Filter
Size Dimen­sionsL
(mm)
W
(mm)
H
(mm)
Mount
0504 1.2 1 0.9 SMT
0805 2 1.2 1.2 SMT

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 Downloads StatusWinding StyleL
(nH)
Z @ 100 MHz
(Ω)
IR
(mA)
RDC max.
(mΩ)
VR
(V)
VT
(V (AC))
fc
(GHz)
ApplicationFilter BagDesign KitFilter Stick Samples
7442335600SPEC
10 files Active i| Production is active. Expected lifetime: >10 years. bifiliar 100 60 600 220 20 125 10 USB 3.X, HDMI 1.482931061
82931101
744230
82931060
82931100
7442335900SPEC
9 files Active i| Production is active. Expected lifetime: >10 years. bifiliar 170 90 500 270 20 125 8 USB 3.X, HDMI 1.4744230
744233670SPEC
9 files Active i| Production is active. Expected lifetime: >10 years. bifiliar 92 67 320 240 50 125 6.5 USB 3.0829993BAG
744230
744233900SPEC
9 files Active i| Production is active. Expected lifetime: >10 years. bifiliar 131 90 280 300 50 125 4.5 HDMI744230
744233121SPEC
9 files Active i| Production is active. Expected lifetime: >10 years. bifiliar 167 120 280 300 50 125 4.5 LVDS/ USB2.0744230
Order Code Data­sheet Simu­lation
7442335600SPEC
7442335900SPEC
744233670SPEC
744233900SPEC
744233121SPEC
Samples
Order Code Data­sheet Simu­lation Downloads StatusWinding StyleL
(nH)
Z @ 100 MHz
(Ω)
IR
(mA)
RDC max.
(mΩ)
VR
(V)
VT
(V (AC))
fc
(GHz)
ApplicationFilter BagDesign KitFilter Stick 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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