EMI

ferroxcube_material_img01

Electro-magnetic interference (EMI) severely affects the operation of electronic equipment, either if the noise is generated by the device itself or it is received from the environment. Ferrites exhibit excellent EMI protection against common mode and differential conducted noise , since their insertion loss is proportional to frequency thus showing no attenuation to signals, but high impedance to high frequency noise.

Ferroxcube offers a wide range of materials for different frequency bands, thermal conditions and type of noise to be suppressed, with complete data and characterization to ease the design process. Materials can be found in most appropriate shapes for its use: toroids for common mode chokes, cable shields, beads, rods and several ready to mount solutions like SMD beads, through hole wideband chokes and encapsulated cable shields.

Material µi at 25 ° C Bsat (mT) at
25 ° C (1200 A/m)
Tc(° C) p (Ωm) Ferrite type Remark Datasheet
3C11
4300
≈ 390
≥ 125
≈ 1
MnZn
Frequency < 30 MHz
3E65
5200
≈ 480
≥ 165
≈ 0.5
MnZn
Frequency < 20 MHz
-
3E25
6000
≈ 390
≥ 125
≈ 0.5
MnZn
Frequency < 20 MHz
3E27
6000
≈ 430
≥ 150
≈ 0.5
MnZn
Frequency < 20 MHz
3E26
7000
≈ 430
≥ 155
≈ 0.5
MnZn
Frequency < 20 MHz
3E10
10000
≈ 460
≥ 130
≈ 0.5
MnZn
Frequency < 20 MHz
3E6
10000
≈ 460
≥ 130
≈ 0.1
MnZn
Frequency < 15 MHz
3E12
12000
≈ 470
≥ 130
≈ 0.5
MnZn
Frequency < 15 MHz
3E15
15000
≈ 470
≥ 130
≈ 0.5
MnZn
Frequency < 15 MHz
-
Material µi at 25 ° C Bsat (mT) at
25 ° C (1200 A/m)
Tc(° C) p (Ωm) Ferrite type Remark Datasheet
3B1
900
≈ 380
≥ 150
≈ 0.2
MnZn
3S1
4000
≈ 400
≥ 125
≈ 1
MnZn
freq. < 30 MHz
3S3
350
≈ 320
≥ 225
≈ 104
MnZn
freq. < 200 MHz
3S4
1700
≈ 320
≥ 110
≈ 103
MnZn
freq. < 100 MHz
3S5
3800
≈ 545
≥ 255
≈ 10
MnZn
freq. < 30 MHz,
4B1
250
≈ 360
≥ 250
≈ 105
NiZn
freq. < 300 MHz
4S2
850
≈ 340
≥ 150
≈ 105
NiZn
freq. < 100 MHz
4S2F
700
≈ 290
≥ 120
≈ 104
NiZn
freq. < 100 MHz
4S3
250
≈ 360
≥ 250
≈ 105
NiZn
freq. < 300 MHz
4S60
2000
≈ 260
≥ 100
≈ 105
NiZn
freq. < 50 MHz
No Result