Datasheet

ManualsBrandsKEMET ManualsFerritesFerrite Toroidal Core 27mm 10MHz

1© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard E5010_ESD-R-SR • 9/12/2018

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

One world. One KEMET

EMI Cores

ESD-R-SR Toroidal Cores for Round Cables for

Low Frequency at 150 kHz (Bare, coated & with case)

Benets

• Proprietary high impedance core material for effective

noise suppression at 150kHz

• Solid construction

• Large-size ring type

• Bare, coated and with case types available

Overview

The KEMET ESD-R-SR Series solid toroidal cores are

designed for use on round cables. KEMET’s unique core

material enables high performance in low frequency

range, at 150 kHz. Options are available in bare, coated

and with case types. 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

• Business multifunction printers

• Industrial equipment

• General purpose inverters

Part Number System

ESD- R- 31 SR -P

Series Shape Type

Core Size

Outer Dimension Code (mm)

Core Material Type

ESD- Ring See Table 1 SR = S15H

SRH = S18H

Blank = Bare

P = Coated

Summary of content (9 pages)

PAGE 1
EMI Cores ESD-R-SR Toroidal Cores for Round Cables for Low Frequency at 150 kHz (Bare, coated & with case) Overview Applications The KEMET ESD-R-SR Series solid toroidal cores are designed for use on round cables. KEMET’s unique core material enables high performance in low frequency range, at 150 kHz. Options are available in bare, coated and with case types.
PAGE 2
EMI Core – ESD-R-SR Toroidal Cores for Round Cables for Low Frequency at 150 kHz (Bare, coated & with case) Turns and Impedance Characteristics 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. A turn is counted by the number of lead-wire windings which pass through the inner hole of the core. Windings on the outside of the core do not count.
PAGE 3
EMI Core – ESD-R-SR Toroidal Cores for Round Cables for Low Frequency at 150 kHz (Bare, coated & with 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-SR Toroidal Cores for Round Cables for Low Frequency at 150 kHz (Bare, coated & with case) Environmental Compliance All KEMET EMI cores are RoHS compliant. Dimensions – Millimeters OD ID T 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-SR Toroidal Cores for Round Cables for Low Frequency at 150 kHz (Bare, coated & with case) Performance Characteristics Item Performance Characteristics Operating temperature Frequency range Outer diameter Inner diameter Thickness Type Case flame resistant rating Material −25°C to +85°C Low frequency 31.0 – 59.0 mm 19.0 – 36.0 mm 12.7 – 21.
PAGE 6
EMI Core – ESD-R-SR Toroidal Cores for Round Cables for Low Frequency at 150 kHz (Bare, coated & with case) Impedance vs. Frequency cont. Bare Type Coated Type © 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-SR Toroidal Cores for Round Cables for Low Frequency at 150 kHz (Bare, coated & with case) Impedance vs. Frequency cont. Case Type Packaging Part Number ESD-R-31SR ESD-R-38SR ESD-R-47SR ESD-R-57SR ESD-R-31SR-P ESD-R-38SR-P ESD-R-47SR-P ESD-R-57SR-P ESD-R-47SRH Packaging Type Pieces per Box Tray 300 200 100 60 300 200 100 60 100 © 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-SR Toroidal Cores for Round Cables for Low Frequency at 150 kHz (Bare, coated & with 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.
PAGE 9
EMI Core – ESD-R-SR Toroidal Cores for Round Cables for Low Frequency at 150 kHz (Bare, coated & with 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.