OverviewAll product unitsProduct unitPassive ComponentsProduct groupEMC ComponentsProduct familyFerrites for PCB AssemblyProduct seriesWE-RFI SMT Wirewound Ferrite Bead

WE-RFI SMT Wirewound Ferrite Bead EXTENDED

WE-RFI SMT Wirewound Ferrite Bead
 Size Dimen­sionsL
(mm)
W
(mm)
H
(mm)
Mount
NEW 0402 1 0.55 0.55 SMT
NEW 0603 1.65 1.1 0.9 SMT
0805 2 1.25 1.2 SMT
1008 2.5 2 1.6 SMT

Characteristics

  • High performance ferrite beads
  • High impedance over a broad bandwidth
  • High current ratings
  • No core saturation
  • Very low RDC
  • Recommended soldering: Reflow
  • Custom designs on request
  • AEC-Q200 Grade 3 (−40°C to +85°C)
  • Operating temperature: –40 °C to +85 °C

Applications

  • Low pass filters to eliminate high frequency noise
  • Perfect as data line filter and for uncoupling of distribution voltage

Products

All
0402
0603
0805
1008
Order Code Data­sheet Simu­lation Downloads StatusZ @ 10 MHz
(Ω)
Z @ 25 MHz
(Ω)
Z @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Design Kit Samples
744760247ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 280 4725 700 MHz 650 0.5744762ARFI
744760256ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 350 5570 600 MHz 620 0.55744762ARFI
744760268ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 420 6860 550 MHz 560 0.85744762ARFI
744760282ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 520 8500 500 MHz 450 1.05744762ARFI
744760310ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 620 9665 450 MHz 430 1.05744762ARFI
744760312ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 730 12500 440 MHz 380 1.2744762ARFI
744760315ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 950 15100 390 MHz 330 1.45744762ARFI
744760318ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1160 19700 340 MHz 310 2744762ARFI
744760322ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1300 11600 300 MHz 300 1.75744762ARFI
744760327ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1650 14870 290 MHz 275 1.75744762ARFI
744760333ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1980 18140 250 MHz 285 2744762ARFI
744760339ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 2300 20360 250 MHz 265 2.15744762ARFI
744760347ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 730 16780 140 MHz 260 1.9
744760356ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 830 17920 110 MHz 260 2.2744762ARFI
744760382ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1180 25220 105 MHz 250 2.4744762ARFI
744760410ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1490 31920 105 MHz 190 3.6744762ARFI
744762312ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 780 32000 385 MHz 350 1.3744762ARFI
744762315ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1000 65000 350 MHz 285 1.65744762ARFI
744762318ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1200 95000 310 MHz 265 2.2744762ARFI
744762322ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1550 105000 270 MHz 260 2.35744762ARFI
744762327ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 450 40000 150 MHz 250 2.6744762ARFI
744762333ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 550 38000 120 MHz 210 2.85744762ARFI
744762339ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 650 35000 95 MHz 200 4744762ARFI
744762347ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 800 38000 85 MHz 190 4.3744762ARFI
744762356ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1000 38000 110 MHz 260 2.6
744762368ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1200 37000 85 MHz 240 2.8
744762382ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1600 35000 65 MHz 230 3.05
744762415ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 950 70000 70 MHz 200 4744762ARFI
744762418ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1300 35000 30 MHz 195 4.5744762ARFI
744762422ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1400 70000 50 MHz 200 5744762ARFI
744762447ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 3400 125000 30 MHz 110 14744762ARFI
744762427ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 1900 86000 45 MHz 165 6744762ARFI
744762433ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 2500 75000 30 MHz 160 6.5744762ARFI
744762439ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 2900 90000 30 MHz 145 8.5744762ARFI
744762410ASPEC
10 files Active i| Production is active. Expected lifetime: >10 years. 670 32000 55 MHz 230 3.5
7447610139SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 20 160 2320 MHz 1910 0.042
7447610168SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 35 265 1925 MHz 1650 0.05
7447610211SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 60 540 1925 MHz 1230 0.078
7447610215SPEC
9 files Active i| Production is active. Expected lifetime: >10 years. 80 705 1885 MHz 1170 0.09
7447610220SPEC
9 files Active i| Production is active. Expected lifetime: >10 years. 105 860 1730 MHz 1100 0.105
7447610224SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 125 1215 1345 MHz 810 0.18
7447610227SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 140 1255 1540 MHz 790 0.165
7447610236SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 190 1840 1040 MHz 770 0.185
7447610242SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 220 2000 1110 MHz 670 0.255
7447610256SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 320 2820 915 MHz 640 0.27
7447610260SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 320 2700 1000 MHz 545 0.38
7447610282SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 440 3590 830 MHz 470 0.45
7447610310SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 535 4670 680 MHz 375 0.7
7447610315SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 830 6910 605 MHz 240 1.07
7447610322SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 130 6380 110 MHz 575 0.4
7447610333SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 190 10250 110 MHz 350 0.95
7447610347SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 280 11100 67 MHz 300 1.125
7447610356SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 325 12080 62 MHz 315 1.055
7447610368SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 400 13300 52 MHz 280 1.38
7447610382SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 490 14390 46 MHz 250 1.55
7447610410SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 580 15450 40 MHz 260 1.7
7447610415SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 950 22410 30 MHz 155 3.9
7447650120SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 11 187 7720 MHz 1770 0.025
7447650130SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 16 261 3800 MHz 1470 0.035
7447650133SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 18 327 3875 MHz 1470 0.035
7447650136SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 20 380 3875 MHz 1380 0.04
7447650177SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 42 802 2980 MHz 1030 0.09
7447650210SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 55 1184 2955 MHz 890 0.13
7447650212SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 65 1160 2955 MHz 940 0.11
7447650215SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 84 2063 2590 MHz 885 0.13
7447650218SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 100 1836 2955 MHz 765 0.16
7447650222SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 120 2318 2170 MHz 640 0.22
7447650227SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 150 2883 2015 MHz 600 0.26
7447650236SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 200 4418 1565 MHz 515 0.375
7447650242SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 235 4888 1810 MHz 440 0.46
7447650247SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 260 4790 1600 MHz 430 0.51
7447650253SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 300 6050 1600 MHz 370 0.615
7447650259SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 330 6260 1370 MHz 360 0.67
7447650270SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 400 7130 1565 MHz 260 1.125
7447650277SPEC
9 files New i| Product is new in our portfolio and production is active. Expected lifetime: >10 years. 430 8900 1240 MHz 240 1.25
Order Code Data­sheet Simu­lation
744760247ASPEC
744760256ASPEC
744760268ASPEC
744760282ASPEC
744760310ASPEC
744760312ASPEC
744760315ASPEC
744760318ASPEC
744760322ASPEC
744760327ASPEC
744760333ASPEC
744760339ASPEC
744760347ASPEC
744760356ASPEC
744760382ASPEC
744760410ASPEC
744762312ASPEC
744762315ASPEC
744762318ASPEC
744762322ASPEC
744762327ASPEC
744762333ASPEC
744762339ASPEC
744762347ASPEC
744762356ASPEC
744762368ASPEC
744762382ASPEC
744762415ASPEC
744762418ASPEC
744762422ASPEC
744762447ASPEC
744762427ASPEC
744762433ASPEC
744762439ASPEC
744762410ASPEC
7447610139SPEC
7447610168SPEC
7447610211SPEC
7447610215SPEC
7447610220SPEC
7447610224SPEC
7447610227SPEC
7447610236SPEC
7447610242SPEC
7447610256SPEC
7447610260SPEC
7447610282SPEC
7447610310SPEC
7447610315SPEC
7447610322SPEC
7447610333SPEC
7447610347SPEC
7447610356SPEC
7447610368SPEC
7447610382SPEC
7447610410SPEC
7447610415SPEC
7447650120SPEC
7447650130SPEC
7447650133SPEC
7447650136SPEC
7447650177SPEC
7447650210SPEC
7447650212SPEC
7447650215SPEC
7447650218SPEC
7447650222SPEC
7447650227SPEC
7447650236SPEC
7447650242SPEC
7447650247SPEC
7447650253SPEC
7447650259SPEC
7447650270SPEC
7447650277SPEC
Samples
Order Code Data­sheet Simu­lation Downloads StatusZ @ 10 MHz
(Ω)
Z @ 25 MHz
(Ω)
Z @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Design Kit Samples

Impedance behavior

In the range of the highest impedance, i.e. the resonance range, the gray curve, which corresponds to the resistive ("ohmic") component of the impedance, has its maximum. The resistive component is only found in inductors with a ferrite core and represents the losses of the ferrite material over the frequency.

In case of choke applications in which inductors (with and without ferrite) are used, the best signal blocking occurs shortly below the self resonance frequency (SRF), where the impedance is very high and thus the attenuation reaches its maximum.

For filter or impedance-matching applications, it is more important to have constant inductance in the relevant frequency range, which means the SRF of the inductor should be well above the operating frequency of the circuit.

DC-Bias

For inductors, factors like DC bias current have less impact on the preservation of impedance until the inductors are used beyond the saturation current.

In contrast, DC bias has a prominent influence on multilayer ferrite (e.g. WE-CBF) and the current flowing through the component changes the impedance over a specific frequency range.

Multilayer ferrite saturate as a function of the flowing bias current, changing the impedance curve in the lower frequency (<100 MHz) at the same time, shifting the self resonant frequency higher in frequency.

Assortments

Articles from this product series can be found in the following assortments:

Videos

Würth Elektronik Webinar: Signal interface filters - effectiveness under real conditions