KEMET EMI Cores
KEMET EMI Cores provide high-frequency noise suppression in electronic circuits. There are two ferrite material options for KEMET EMI Cores, namely Nickel-Zinc (NiZn) and Manganese Zinc (MnZn). The NiZn core material is typically effective for theMHz band range (FM-band frequencies), whereas the MnZn core material is typically effective for the kHz band range (AM-band frequencies). The MnZn core material offers a lower resistance compared to the NiZn and hence adequate insulation is required before use (recommended to measure the actual frequency-range effectiveness in the target application). The effective frequency range varies depending on core shape, size, and the number of turns.
Effective Band Range & Magnetic Permeability of Ferrite Material
Efficient noise reduction is achieved through the proper selection of the material according to the target frequency band. A particular ferrite material will be effective in a certain frequency band depending on its magnetic permeability. Materials with higher magnetic permeability are effective in the lower frequency range, while those with lower magnetic permeability are effective in the higher frequency range. The S18H, S15H, 10H, 7H, 5H, 1400L, and 700L are KEMET's proprietary ferrite material names. The series meets IEC, CISPR, and ECE EMI standards, as well as regional FCC, EN, and VCCI standards. Typical applications include consumer electronics, medical equipment, white goods, home appliances, telecommunication, test and measurement equipment, air/power conditioners, and inverters.
Features
- Bare, coated, case types, snail versions, and fixing base types
- Split versions for post-production attachment
- Broad range by simply adding turns
Applications
- Medical equipment
- Consumer electronics
- White goods
- Home appliances
- Computers
- Audio-visual equipment
- Telecommunications
- Adapters
- Test and measurement equipment
- Industrial equipment
- General purpose inverters
- Air or Power conditioners
- Automotive inverters, chargers, and DC/DC converters
ROUND CABLE EMI CORES - Toroidal
ESD-R - Toroidal cores (Datasheet)
ESD-R-B - Toroidal cores with snail-shaped case (Datasheet)
ESD-R-H - Toroidal cores for round cables with high heat resistance and cable-holding mechanism (Datasheet)
ESD-R-SR - Toroidal cores for round cables for low frequency at 150kHz (bare, coated, and with case) (Datasheet)
ESD-R-NC - Toroidal nanocrystal cores for low and high frequency (Datasheet)
ROUND CABLE EMI CORES - Snap-On
ESD-SR - Snap-on cores for low and high frequency (Datasheet)
ESD-SR-H - Snap-on cores with high heat resistance and cable-holding mechanism for high frequency (Datasheet)
ESD-SR-HL - AEC-Q200 snap-on cores with high heat resistance and cable-holding mechanism for high frequency (Datasheet)
ESD-SR-XVE - AEC-Q200 snap-on cores with high heat resistance and structure that minimizes characteristic fluctuations (Datasheet)
ROUND CABLE EMI CORES - Bead
FLAT CABLE EMI CORES - Solid
FLAT CABLE EMI CORES - Split
Videos
EMI Cores Selection Guide
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