Datasheet

ManualsBrandsKEMET ManualsFerritesFerrite Core 19Ohm @ 10MHz

1© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard E5002_ESD-R-B • 9/14/2018

Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com

One world. One KEMET

EMI Cores

ESD-R-B Toroidal Cores for Round Cables

for Low & High Frequency (with snail-shaped case)

Benets

• MnZn≤10MHz(AMbandrange)andNiZn≤300MHz

(FMbandrange)optionsavailable

• Solid construction

• Easy to install with one M4 screw

• UL94V–2ameretardantratedcase

Overview

The KEMET ESD-R-B series solid toroidal cores are

designedtouseonroundcables.Thewiderangeof

ManganeseZinc(MnZn)andNickelZinc(NiZn)options

allowsfortargetingofspecicfrequencyranges.The

snail-shapedcaseallowsxingthecoreintheapplication

to avoid contact with other components.

EMIcoresarepartofafamilyofpassivecomponentswhich

addresstheissuesofnoiseorelectromagneticinterference

(EMI)incircuitsorsystems.

Applications

• Consumer electronics

• Air conditioners

• Power conditioners

• Refrigerators

• Washingmachines

• Industrialequipment

• Medicalequipment

Summary of content (9 pages)

PAGE 1
EMI Cores ESD-R-B Toroidal Cores for Round Cables for Low & High Frequency (with snail-shaped case) Overview Applications The KEMET ESD-R-B series solid toroidal cores are designed to use on round cables. The wide range of Manganese Zinc (MnZn) and Nickel Zinc (NiZn) options allows for targeting of specific frequency ranges. The snail-shaped case allows fixing the core in the application to avoid contact with other components.
PAGE 2
EMI Core – ESD-R-B Toroidal Cores for Round Cables for Low & High Frequency (with snail-shaped case) Part Number System ESD- R- 19 B Series Shape Type Core Size Outer Dimension Code (mm) Core Material ESD- Ring See Table 1 Turns and Impedance Characteristics B = Mn-Zn D-B = Ni-Zn Figure 1 – How to count turns When the desired performance of an EMI core cannot be obtained with a single pass through the core, the impedance characteristics can be changed with multiple turns.
PAGE 3
EMI Core – ESD-R-B Toroidal Cores for Round Cables for Low & High Frequency (with snail-shaped case) Magnetic Permeability of Ferrite Material In order to achieve most efficient noise reduction, it is important to select the material according to the target frequency band. Depending on its magnetic permeability, a particular ferrite material will be effective in a certain frequency band.
PAGE 4
EMI Core – ESD-R-B Toroidal Cores for Round Cables for Low & High Frequency (with snail-shaped case) Environmental Compliance All KEMET EMI cores are RoHS compliant. Dimensions – Millimeters C ø5.1 6.5 3.0 D A øB See Table 1 for dimensions Installation Example © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.
PAGE 5
EMI Core – ESD-R-B Toroidal Cores for Round Cables for Low & High Frequency (with snail-shaped case) Performance Characteristics Item Performance Characteristics Operating temperature Frequency range Outer diameter Inner diameter Thickness Type Case flame resistant rating Material −25°C to +60°C Low frequency and high frequency 21.5 – 51.5 mm 8.8 – 21.5 mm 13.0 – 17.
PAGE 6
EMI Core – ESD-R-B Toroidal Cores for Round Cables for Low & High Frequency (with snail-shaped case) Impedance vs. Frequency © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.
PAGE 7
EMI Core – ESD-R-B Toroidal Cores for Round Cables for Low & High Frequency (with snail-shaped case) Impedance vs. Frequency cont. Packaging Part Number ESD-R-19B ESD-R-19D-B ESD-R-25B ESD-R-25D-B ESD-R-38B ESD-R-38D-B ESD-R-47B ESD-R-47D-B Packaging Type Pieces per Box 640 300 Tray © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.
PAGE 8
EMI Core – ESD-R-B Toroidal Cores for Round Cables for Low & High Frequency (with snail-shaped case) Handling Precautions EMI Cores should be stored in normal working environments. While the EMI Cores themselves are quite robust in other environments, avoid exposure to high temperatures, high humidity, corrosive atmospheres and long term storage for case, snap-on and split types. KEMET recommends that maximum storage temperature not exceed 40°C and maximum storage humidity not exceed 75% relative humidity.
PAGE 9
EMI Core – ESD-R-B Toroidal Cores for Round Cables for Low & High Frequency (with snail-shaped case) KEMET Electronics Corporation Sales Oﬃces For a complete list of our global sales offices, please visit www.kemet.com/sales. Disclaimer All product specifications, statements, information and data (collectively, the “Information”) in this datasheet are subject to change.