EMI Cores ESD-SR Series Snap-on Cores for Round Cables Overview Benefits Applications KEMET ESD-SR Series snap-on cores are designed for use on round cable and are available in a variety of sizes. EMI cores are part of a family of passive components which address the issues of noise or electromagnetic interference (EMI) in circuits or systems. * Snap-on convenienceRing Type * Consumer electronics * Split construction Tips on EMI Core Usages * Temperature Index of 65C EMI Cores * Meets the requirements of UL94V-0 Ring Type Characteristics and how to count turns * CTI: Rank 0 Tips on EMI Core Usages adding turnsNumber of turns are counted by how many times the lead wire * Broad range by simply EMI Cores hole of the core. Do not count the number of lead wire winding Characteristics and how to count turns When desired performance can not be obtained just b Number of turns are counted by how many times the lead wire pa sses through the inner canofbe raised b y increasing th e the turn. In as this case, the hole of the core. Do not count thevalue number lead wire winding outside core, it results EMI Cores be checked that it is in the desired range as adding turns resu y increasing th y 1 turn, impedance characteristics e frequency band should Rep e turn. In this case, the Figure range 1 - How to countturns turns be checked that it is in the desired as adding resu When the desired performance of an EMI core cannot be obtained with a single pass throughCharacteristics the core, theand how to count turns impedance characteristics can be changed withofmultiple Number turns are counted by how many times the lead wire pa turns. hole of the core. Do not count the number of lead wire winding Represe ntative ExampleESD-R-16C 1000 10000 Impedance () 10000 lts in lowering down the sses through the inner outside the core, as it results 1000 3T Resonance point changes to lower A turn is counted by the number of lead-wire Whenwindings desired performance can not be obtained just b y 1 turn, impedance characteristics 2T 1T 2T 3T 100 e frequency band should can be raised b y increasing th e turn. In this case, the which pass through the inner hole of thevalue core. Windings 1T checked that1it for is in the desired range as adding turns resu lts in lowering down the on the outside of the core do not count.beSee Figure 1T 2T Figure 23T- Relationship and turn count. 10 *Number of lead wire woundbetween outside theimpedance core + 1 = Number of read wire passes through the inner examples of one, two, and three turns. (Representative example: ESD-R-16C) hole of the core Represe ntative ExampleESD-R-16C *Number of lead wire wound outside the core + 1 10000 = Turn count = Number of read wire passes through the inner hole of the core = Turn count Fig.1 Fig.1 How to count turns 100 1 10 changes to lower band100 Resonance point How to count turns 3T Core Material and Effective Frequency Range Note that above 10 1 1 Fig.2 1000 Frequency (MHz) Fig.2 Relationship b Relationship between impedance an d turn count 2T There are two materials of ferrite, Ni-Zn series and Mn-Zn ser 1T There are two materials of ferrite, Ni-Zn series and Mn-Zn ser 2T 3T 10 1T 100 1 Impedance Increase 1000 Impedance () Adding turns will result in higher impedance while also lowering the effective frequency range. See Figure 2 for an example. Impedance Increase Tips on EMI Core Usages value can be raised b Impedance () Turns and Impedance Characteristics When desired performance can not be obtained just b Impedance Increase Ring Type Note that above e band range i ies. Ni-Zn series is e ive for kHz band range. e band range i s a reference only. Examination of s a reference s of lead wire wound outside the core + 1 There are two ferrite material options for*Number = Number of read wire passes through the inner with1 actual instrument is necessary. 10 100 1000 with actual instrument is necessary. 1 hole of the core KEMET EMI Cores: Nickel Zinc (NiZn) and= Turn count As Mn-Zn series lower resistance compared to Ni-Zn seri Frequency (MHz) As Mn-Zn series has lower resistance compared tohas Ni-Zn series, make sure to provide Manganese Zinc (MnZn). Each core material Fig.1 How to adequate insulation before count turns insulation before use. Fig.2 adequate Relationship between impedance an use. d turn counts has a different resistance and effective Figure 3 - Effective band range of MnZn and NiZn ferrite core material. Mn-Zn series vs Ni-Zn series Z-f Characteristics (representative example) Mn-Zn series vssame-dimension Ni-Zn series Z-f Characteristics (r example, measured with ring core) frequency range. The MnZn core materialThere are two materials of ferrite,(Representative condition: ring core) Ni-Zn(measurement series and Mn-Zn sermeasured with same-dimension ies. Ni-Zn series is e (measurement condition: measured with same-dimensi 1000 has a lower resistance compared to the NiZn; ive for kHz band range. 1000 therefore, adequate insulation is requiredNote that above e band range i s a reference only. Examination of s with actual instrument is necessary. before use. AM band range FM band range make AM bandsure rangeto provide NiZn series core As Mn-Zn series has lower resistance compared to Ni-Zn series, Impedance () It is recommended to measure the actual frequency range effectiveness in the target application. Impedance () Impedance () adequate insulation before use. 100 The NiZn core material is typically effective 100 for frequencies in the MHz band range such as Mn-Zn series vs Ni-Zn series Z-fMnZn Characteristics (representative example) series core (measurement condition: measured with same-dimension ring core) the FM-band, while the MnZn core material is MnZn series core 1000 typically effective for the kHz band range such 10 as the AM-band. See Figure 3. AM band range 10 NiZn ser FM band range NiZn series core 100 1 0.01 MnZn series core 10 Fig.3 0.1 1 10 1 1000 te KEMET One world. One 0.1 1 10 Frequency1 (MHz) E5005_ESD-SR * 3/28/2017 0.01 (c) KEMET Electronics Corporation * P.O. Box 5928 * Greenville, SC 29606 (864) 963-6300 * www.kemet.com Fig.3 1 100 Frequency (MHz) EMI SD-SR Series Temperature Index : 65C CTI : Rank 0 EMI Cores - ESD-SR Series Snap-on Cores for Round Cables Dimensions - Shape and Dimensions Millimeters ESD-SR-S ESD-SR-S B B ESD-SR- ESD-SR D D A C A C See Table 1 for dimensions ESD-SR- blankBlack ESD-SR-G Gray ESD-SR- V Violet Black only for ESD-SR-S Case Color Environmental Compliance Impedance vs. Frequency All KEMET EMI cores are RoHS Compliant. MI Core 8 Flame Class : UL94V-0 ESD-SR-100 1000 Impedance () Table 1 - Ratings & Part Number1T Reference 1 100 Impedance () 1000 ESD-SR-110 1T 100 Case color code added to end of ESD-SR part number: Blank = black, G = gray, V = violet. ESD-SR-S series only available in black. 10 1 Part Number 1 ESD-SR-100 ESD-SR-110 ESD-SR-S10 ESD-SR-120 ESD-SR-150 ESD-SR-160 ESD-SR-250 ESD-SR-S16 ESD-SR-S25 Dimensions (mm) 10 A Maximum 16.5 14.4 15.5 10 100 16.0 Frequency (MHz) 19.6 20.2 31.5 23.0 33.0 B Maximum 16.5 14.2 14.0 1000 16.4 20.3 20.0 31.6 20.0 29.0 C Maximum 21.0 28.01 18.5 1 33.0 37.4 39.0 38.0 20.5 15.5 oD Weight (g) 6.0 7.2 5.0 6.9 6.010 4.1100 6.0 Frequency (MHz) 13.3 7.0 23.4 9.0 22.7 13.0 59.5 8.0 12.9 14.5 21.3 (c) KEMET Electronics Corporation * P.O. Box 5928 * Greenville, SC 29606 (864) 963-6300 * www.kemet.com Case Color1 Black, Gray, Violet Black, Gray, Violet 1000 Black Black, Gray, Violet Black, Gray, Violet Black, Gray, Violet Black, Gray, Violet Black Black E5005_ESD-SR * 3/28/2017 2 D D A C A C ESD-SR- blankBlack ESD-SR-G Gray ESD-SR- V Violet Black only for ESD-SR-S Case Color EMI Cores - ESD-SR Series Snap-on Cores for Round Cables Impedance vs. Frequency Impedance vs. Frequency ESD-SR-100 1T 100 10 1 Snap-on TypeEMI Cores 1 10 100 1T 100 10 1 1000 Frequency (MHz) Ring Type ESD-SR-110 1000 Impedance () Impedance () 1000 1 10 100 Frequency (MHz) 1000 Snap-on TypeEMI Cores Impedance Ring Type vs. Frequency EMI Core ESD-SR-S10 18 Snap-on TypeEMI Cores 1000 1T Impedance vs. Frequency 1000 100 10 100 10 1 10 1 10000 ImpedanceImpedance () Impedance () () 1000 1 10000 100 1000 10000 ESD-SR-S10 10 Frequency (MHz) 1 10 3T 10 2T Frequency ESD-SR-150 3T 3T 10 2T Frequency (MHz) ImpedanceImpedance () Impedance () () 10 ImpedanceImpedance () Impedance () () 1000 100 1000 100 1000 Frequency (MHz) ESD-SR-250 1 3T 10 2T Frequency ESD-SR-250 1T (MHz) 2T 3T 1T 10 2T 100 Frequency (MHz) 1000 1T ESD-SR-S25 10 100 1000 100 1000 10 100 1000 10 100 1000 Frequency (MHz) ESD-SR-S25 1 10 3T Frequency (MHz) 2T ESD-SR-S25 10 100 1000 1 10 1 3T ESD-SR-120 3T 2T 1T ESD-SR-120 3T 2T 10 3T 1 10 1 100 1000 1 10000 100 1000 1000 100 1000 100 1000 100 1000 100 1000 100 1000 10 100 1000 10 100 1000 Frequency (MHz) 3T 10 2T Frequency (MHz) ESD-SR-160 1T 3T 2T 3T 1T 2T 10 Frequency (MHz) ESD-SR-S16 1T 1 10000 10 1 10 Frequency (MHz) ESD-SR-S16 1 3T 10 Frequency (MHz) 2T ESD-SR-S16 1T 3T 10 2T 100 1000 1 10 1 100 1 10 1 1 100 10 ESD-SR-160 1 1 10 1 100 1000 1000 1T 100 1000 1000 1 10000 100 Frequency (MHz) ESD-SR-160 10 100 1T 10 2T 1 10000 10 1 10000 3T 1 10000 10 1 10000 100 ESD-SR-120 100 1000 10000 ESD-SR-250 1T 1 10 1 100 1000 (MHz) 1T 10 1000 1 10000 1000 2T 100 1000 100 100 1T 1 10000 10 1 10000 1000 ESD-SR-150 1 1 10 1 100 1000 1000 100 Frequency (MHz) 100 1000 1000 1 10000 100 100 1000 10000 ESD-SR-150 10 100 1T 1T 1 1000 10000 ImpedanceImpedance () Impedance () () 1000 100 ImpedanceImpedance () Impedance () () ImpedanceImpedance () Impedance () () Impedance Ring Type vs. Frequency ESD-SR-S10 ImpedanceImpedance () Impedance () () 10000 1 3T 1T 10 2T Frequency (MHz) 1T Frequency (MHz) Frequency (MHz) 1T 2T 1T 3T (c) KEMET Electronics Corporation * P.O. Box 5928 *(MHz) Greenville, SC 29606 (864) 963-6300 * www.kemet.com 100 Frequency 2T 1 10 1 1T Frequency (MHz) E5005_ESD-SR * 3/28/2017 3 10000 1000 Impedance () Impedance () 10000 3T 2T 100 EMI Cores - ESD-SR Series Snap-on Cores for Round Cables 1T 10 Impedance vs. Frequency Cont'd 1 Impedance () 10000 1 10 100 1000 100 1000 Frequency (MHz) ESD-SR-S25 1000 3T 2T 100 1T 10 1 1 10 100 Frequency (MHz) 1000 1000 3T 100 2T 1T 10 1 1 10 Frequency (MHz) EMI Core 19 (c) KEMET Electronics Corporation * P.O. Box 5928 * Greenville, SC 29606 (864) 963-6300 * www.kemet.com E5005_ESD-SR * 3/28/2017 4 EMI Cores - ESD-SR Series Snap-on Cores for Round Cables KEMET Electronic 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. The customer is responsible for checking and verifying the extent to which the Information contained in this publication is applicable to an order at the time the order is placed. All Information given herein is believed to be accurate and reliable, but it is presented without guarantee, warranty, or responsibility of any kind, expressed or implied. Statements of suitability for certain applications are based on KEMET Electronics Corporation's ("KEMET") knowledge of typical operating conditions for such applications, but are not intended to constitute - and KEMET specifically disclaims - any warranty concerning suitability for a specific customer application or use. The Information is intended for use only by customers who have the requisite experience and capability to determine the correct products for their application. 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KEMET is a registered trademark of KEMET Electronics Corporation. (c) KEMET Electronics Corporation * P.O. Box 5928 * Greenville, SC 29606 (864) 963-6300 * www.kemet.com E5005_ESD-SR * 3/28/2017 5