Cable Ferrites

Part Number	Description / PDF	Quantity
ESD-SR-250H KEMET	FERRITE CORE HINGED 13MM	489
ESD-R-57D KEMET	NI-ZN TOROIDAL, BARE 36MM	58
ESD-R-25B KEMET	FERRITE CORE CLAMP 13.9MM	169
ESD-R-47H KEMET	MN-ZN TOROIDAL, WITH CASE 22.7MM	58
ESD-FPL-14.5-5 KEMET	NI-ZN FOR FLAT CABLE, BARE 11.0	1632
ESD-R-57M-H KEMET	MN-ZN FERRITE TROIDS CASED 33.2M	10
ESD-FPD-16-1 KEMET	FERRITE CORE CLIP 25.4MM X 2.6MM	263
ESD-R-16C KEMET	FERRITE CORE SOLID 9MM	0
ESD-R-57A-1 KEMET	MN-ZN TOROIDAL, WITH CASE AND TA	27
ESD-R-1317426H-NC21-BT KEMET	NANOCRYSTAL TROIDS WITH BASE 74M	1
ESD-FPL-38.5-8 KEMET	NI-ZN FOR FLAT CABLE, BARE 35.0	709
ESD-FPD-40 KEMET	FERRITE CORE CLIP 56MM X 2MM	0
ESD-FPL-20-12 KEMET	FERRITE CORE SOLID 27MM X 1.5MM	450
ESD-FPL-26 KEMET	NI-ZN FOR FLAT CABLE, BARE 35.0	353
ESD-SR-S57M KEMET	MN-ZN FERRITE SNAP ON 35MM UL94	40
ESD-FPL-49.6-12 KEMET	NI-ZN FOR FLAT CABLE, BARE 44.5	300
ESD-R-47-1 KEMET	MN-ZN TOROIDAL, WITH CASE AND TA	51
ESD-FPL-38.5-12 KEMET	NI-ZN FOR FLAT CABLE, BARE 35.0	490
ESD-R-38D KEMET	FERRITE CORE SOLID 19MM	699
ESD-FPL-21-8 KEMET	FERRITE CORE SOLID 17MM X 0.8MM	3180

Cable Ferrites

1. Overview

Cable Ferrites are passive electronic components designed to suppress high-frequency noise in cables, reducing electromagnetic interference (EMI) and radio-frequency interference (RFI). Constructed from ferrite materials, these components absorb electromagnetic energy and convert it into heat. With the rapid development of high-speed electronics and wireless communication systems, cable ferrites play a critical role in ensuring electromagnetic compatibility (EMC) across industries.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Split Core (Snap-on)	Easy installation without cable disassembly; moderate noise suppression	Consumer electronics power cables
Wound Type	Higher inductance through multiple turns; superior EMI filtering	Industrial motor drives
Flat Cable Ferrite	Low-profile design; optimized for ribbon cables	Computer peripheral cables
High-Frequency Ferrite	Effective at GHz frequencies; specialized material formulation	5G base station cables

3. Structure and Composition

Typical cable ferrites consist of a manganese-zinc (MnZn) or nickel-zinc (NiZn) ferrite core with polymer coating. Split-core designs use two interlocking halves with snap mechanisms, while wound types feature pre-molded toroidal cores. Advanced models integrate conductive elastomers for improved EMI absorption. The core material's permeability determines the operating frequency range and noise suppression efficiency.

4. Key Technical Specifications

Parameter	Description	Importance
Impedance (100MHz)	100 - 2500	Determines noise attenuation performance
Frequency Range	1MHz - 3GHz	Defines effective operation bandwidth
Temperature Stability	-40 C to +125 C	Ensures reliability in harsh environments
Cable Compatibility	2-15mm diameter	Installation flexibility

5. Application Fields

Consumer Electronics: Notebook chargers, HDMI cables, USB hubs
Industrial Equipment: PLC systems, CNC machine cabling
Telecommunications: Fiber optic transceivers, 5G small cells
Automotive: CAN bus systems, EV charging cables

6. Leading Manufacturers and Products

Manufacturer	Key Product	Features
TDK Corporation	DFE3D25E102MA2D	2500 @100MHz, 3GHz high-frequency performance
Murata Manufacturing	BLE21HG102MN1D	Compact 10.5 6.5mm size for automotive applications
Steward Components	28B2043-0A0	High-vibration resistance for industrial motors

7. Selection Guidelines

Key considerations include:

Match impedance to target noise frequency range
Verify mechanical compatibility with cable diameter
Select material type (MnZn for low frequencies, NiZn for high frequencies)
Assess environmental requirements (temperature, vibration)
Balance performance with cost constraints

8. Industry Trends

Current trends show: - Increasing demand for high-frequency (>6GHz) ferrites driven by 5G and IoT - Miniaturization for wearable device applications - Development of wideband ferrites with multi-octave frequency coverage - Growing adoption in EV charging systems (SAE J1772 compliance) - Integration with cable connectors for space-constrained designs