EMI Suppression Ferrite Beads

Würth Elektronik EMI Suppression Ferrite Bead product families include the WE-AFB, WE-AFB LFS, WE-SAFB, and WE-TOF series. The WE-AFB, WE-SAFB, and WE-TOF series all feature a ferrite core made of NiZn. This NiZn core allows for the best possible interference suppression and works in a broadband frequency range. The NiZn core ferrites are available in axial (WE-AFB) and toroidal (WE-SAFB) types. Würth WE-SAFB ferrite beads are smaller in size and used for cables with a diameter of 0.55mm up to 4mm. The WE-AFB LFS axial ferrite beads have an MnZn core. The MnZn core material is used for low-frequency applications from 150kHz and 30MHz.

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Qty. RoHS ECAD Model Series
Product
Impedance
Inside Diameter
Outside Diameter
Inside Length
Outside Length
Outside Width
Inside Height
Outside Height
Qualification
Packaging
Core Material
Wurth Elektronik Ferrite Cable Cores WE-AEFA AEC-Q200 220Ohm Ferrite Core
Datasheet
283In Stock
Min.: 1
Mult.: 1

WE-AEFA Round Cable Cores Solid 220 Ohms 9.5 mm 17.5 mm 28.5 mm AEC-Q200 Tray 1E04 620
Wurth Elektronik Ferrite Cable Cores WE-AEFA AEC-Q200 150Ohm Ferrite Core
Datasheet
117In Stock
Min.: 1
Mult.: 1

WE-AEFA Round Cable Cores Solid 150 Ohms 10.5 mm 15.5 mm 28 mm AEC-Q200 Tray 1E04 620
Wurth Elektronik Ferrite Cable Cores WE-AEFA AEC-Q200 190Ohm Ferrite Core
Datasheet
122In Stock
Min.: 1
Mult.: 1

WE-AEFA Round Cable Cores Solid 190 Ohms 15.5 mm 26 mm 28.5 mm AEC-Q200 Tray 1E04 620
Wurth Elektronik Ferrite Cable Cores WE-SAFB 1.4mm 28Ohm @ 25MHz
Datasheet
619In Stock
Min.: 1
Mult.: 1

WE-SAFB Round Cable Cores Solid 28 Ohms 1.6 mm 4.1 mm 3.2 mm Bulk 3 W 800
Wurth Elektronik Ferrite Cable Cores WE-SAFB 1.65mm 50Ohm @ 25MHz
Datasheet
2.253In Stock
Min.: 1
Mult.: 1

WE-SAFB Round Cable Cores Solid 79 Ohms 2 mm 4 mm 10 mm Bulk 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-SAFB 3.45mm 35Ohms @ 25MHz 1Turn
Datasheet
1.270In Stock
Min.: 1
Mult.: 1

WE-SAFB Round Cable Cores Solid 54 Ohms 4 mm 6 mm 10 mm Bulk 4 W 1500
Wurth Elektronik Ferrite Cable Cores WE-SAFB 3.7mm 90Ohm @ 25MHz
Datasheet
837In Stock
Min.: 1
Mult.: 1

WE-SAFB Round Cable Cores Solid 148 Ohms 4 mm 7.7 mm 20 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-AFB Axial 25MHz 163Ohm
Datasheet
434In Stock
7.808Expected 06/03/2026
Min.: 1
Mult.: 1

WE-AFB Round Cable Cores Solid 198 Ohms 5 mm 11.5 mm 20.5 mm Tray 4 W 1500
Wurth Elektronik Ferrite Cable Cores WE-AFB 1 Turn Axial 25MHz @ 119Ohms
Datasheet
1.110In Stock
768Expected 19/02/2026
Min.: 1
Mult.: 1

WE-AFB Round Cable Cores Solid 199 Ohms 5.6 mm 12 mm 20 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-AFB Axial 25MHz 133Ohm
Datasheet
1.985In Stock
Min.: 1
Mult.: 1

WE-AFB Round Cable Cores Solid 217 Ohms 9 mm 16 mm 28 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-AFB Axial 25MHz 83Ohm
Datasheet
583In Stock
Min.: 1
Mult.: 1

WE-AFB Round Cable Cores Solid 143 Ohms 9 mm 16 mm 17 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-AFB Axial 25MHz 46Ohm
Datasheet
771In Stock
Min.: 1
Mult.: 1

WE-AFB Round Cable Cores Solid 70 Ohms 8.5 mm 12 mm 15 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-AFB Axial 25MHz 120Ohm
Datasheet
770In Stock
Min.: 1
Mult.: 1

WE-AFB Round Cable Cores Solid 220 Ohms 8.2 mm 14.2 mm 28.5 mm Bulk 7 W 700
Wurth Elektronik Ferrite Cable Cores WE-AFB 1 Turn Axial 25MHz @ 59Ohms
Datasheet
613In Stock
Min.: 1
Mult.: 1

WE-AFB EMI Suppression Ferrite Beads 94 Ohms Tray
Wurth Elektronik Ferrite Cable Cores WE-FLAT 21 Poles Round 100MHz @55Ohms
Datasheet
68In Stock
1.400On Order
Min.: 1
Mult.: 1

WE-FLAT Flat Ribbon Cable Cores Solid 55 Ohms 28 mm 33.5 mm 10 mm 1.3 mm 6.5 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-FLAT Core 25MHz 27Ohm
Datasheet
1.235In Stock
1.000On Order
Min.: 1
Mult.: 1

WE-FLAT Flat Ribbon Cable Cores Solid 67 Ohms 34.8 mm 12 mm 40 mm 1.3 mm 6.5 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-FLAT 26 Poles Round 100MHz @52Ohms
Datasheet
235In Stock
Min.: 1
Mult.: 1

WE-FLAT Flat Ribbon Cable Cores Solid 48 Ohms 34.8 mm 1 mm 40 mm 1.3 mm 6.5 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-FLAT Core 100MHz 90Ohm
Datasheet
152In Stock
Min.: 1
Mult.: 1

WE-FLAT Flat Ribbon Cable Cores Solid 90 Ohms 28 mm 2 mm 33.5 mm 1.3 mm 6.5 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-FLAT 42Ohms 23Pol
Datasheet
31In Stock
Min.: 1
Mult.: 1

WE-FLAT Flat Ribbon Cable Cores Solid 42 Ohms 31.6 mm 35.5 mm 5 mm 1 mm 8 mm Tray 3 W 800
Wurth Elektronik Ferrite Cable Cores WE-FLAT Round 100MHz @ 58Ohms
Datasheet
142In Stock
Min.: 1
Mult.: 1

WE-FLAT Flat Ribbon Cable Cores Solid 58 Ohms 20 mm 23 mm 12 mm 0.7 mm 3 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-FLAT Hanging Ferr Core 100MHz 80Ohms
Datasheet
822In Stock
Min.: 1
Mult.: 1

WE-FLAT Flat Ribbon Cable Cores Solid 80 Ohms 27 mm 31 mm 12 mm 0.7 mm 3 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-FLAT Ferrite for Flexible Printed Circuit Board
Datasheet
135In Stock
Min.: 1
Mult.: 1

WE-FLAT Flat Ribbon Cable Cores Solid 20 Ohms 13 mm 15.5 mm 4 mm 0.5 mm 2 mm Tray 4 W 810
Wurth Elektronik Ferrite Cable Cores WE-FLAT Ferrite for Flexible Printed Circuit Board
Datasheet
529In Stock
Min.: 1
Mult.: 1

WE-FLAT Flat Ribbon Cable Cores Solid 103 Ohms 20 mm 24.5 mm 2 mm 0.5 mm 5 mm Tray 4 W 620
Wurth Elektronik Ferrite Cable Cores WE-FLAT Ferrite for Flexible Printed Circuit Board
Datasheet
228In Stock
Min.: 1
Mult.: 1

WE-FLAT Flat Ribbon Cable Cores Solid 20 Ohms 5 mm 7 mm 3 mm 0.7 mm 2.3 mm Tray 4 W 810
Wurth Elektronik Ferrite Cable Cores WE-FLAT Ferrite for Flexible Printed Circuit Board
Datasheet
148In Stock
Min.: 1
Mult.: 1

WE-FLAT Flat Ribbon Cable Cores Solid 19 Ohms 11 mm 13.5 mm 4 mm 0.5 mm 2 mm Tray 4 W 810