Materials-Ferroxcube

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.

High Perm
Low Perm

Material	µi at 25 ° C	Bsat (mT) at 25 ° C (1200 A/m)	Tc(° C)	p (Ωm)	Ferrite type	Remark
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
3B1	900	≈ 380	≥ 150	≈ 0.2	MnZn
3S1	4000	≈ 400	≥ 125	≈ 1	MnZn	freq. < 30 MHz
3S3	350	≈ 320	≥ 225	≈ 10^4	MnZn	freq. < 200 MHz
3S4	1700	≈ 320	≥ 110	≈ 1000	MnZn	freq. < 100 MHz
3S5	3800	≈ 545	≥ 255	≈ 10	MnZn	freq. < 30 MHz,
4B1	250	≈ 360	≥ 250	≈ 10^5	NiZn	freq. < 300 MHz
4S2	850	≈ 340	≥ 150	≈ 10^5	NiZn	freq. < 100 MHz
4S2F	700	≈ 290	≥ 120	≈ 104	NiZn	freq. < 100 MHz
4S3	250	≈ 360	≥ 250	≈ 10^5	NiZn	freq. < 300 MHz
4S60	2000	≈ 260	≥ 100	≈ 10^5	NiZn	freq. < 50 MHz

EMI Suppression

High Perm

Low Perm