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 convenience • Consumer electronics • Split construction Tips on EMI Core Usages • EMI Temperature Index of 65°C Cores • Ring Meets the requirements of UL94V-0 Type Characteristics and how to count turns • CTI: Rank 0 Tips on EMI Core Usagesadding turns Number of turns are counted by how many times the lead wire • Broad range by simply EMI Cores Ring Type 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 Tips on EMI Core Usages value can be raised b y increasing th y 1 turn, impedance characteristics e frequency band should （Rep e turn. In this case, the Figure 1range – How count turns turns resu be checked that it is in the desired asto adding When the desired performance of an EMI core cannot be obtained with a single pass through the core, the impedance Characteristics and how to count turns characteristics can be changed with multiple Number turns. of turns are counted by how many times the lead wire pa （Represe ntative Example：ESD-R-16C） 1000 10000 hole of the core. Do not count the number of lead wire winding 10000 lts in lowering down the sses through the inner outside the core, as it results 1000 3T Resonance point changes to lower Impedance Increase Impedance (Ω) A turn is counted by the number of lead-wire windings which When desired y 1 turn, impedance characteristics 2T pass through the inner hole of the core. Windings on theperformance can not be obtained just b 1T 2T 3T 100 e frequency band should value can be raised b y increasing th e turn. In this case, the 1T outside of the core do not count. See Figurebe1checked for examples that it is in the desired range as adding turns resu lts in lowering down the 1T 2T Figure 23T– Relationship between impedance and turn count. 10 *Number of lead wire wound outside the core + 1 of one, two, and three turns. = Number of read wire passes through the inner = Number of read wire passes through the inner hole of the core = Turn count Fig.1 Fig.1 How to count turns 100 10 1 ntative Example：ESD-R-16C） 1 1 10 changes to lower band100 Resonance point Fig.2 1000 Frequency (MHz) Fig.2 Relationship b How to count turns 3T Impedance Increase 1000 Impedance (Ω) Adding turns will result in higher impedance while also lowering the effective frequency range. See Figure 2 for an example. 100 1 (Representative example: ESD-R-16C) hole of the core （Represe *Number of lead wire wound outside the core + 1 10000 = Turn count Impedance Increase Turns and Impedance Characteristics When desired performance can not be obtained just b Impedance (Ω) Ring Type Relationship between impedance an d turn count 2T There are two materials of ferrite, Ni-Zn series and Mn-Zn ser 1T of ferrite, Ni-Zn series and Mn-Zn ser Core Material and Effective Frequency Range2TThere are two materials 1T 3T 10 Note that above ies. Ni-Zn series is e ive for kHz band range. e band range i s a reference Notethethat e band range i s a reference only. Examination of s *Number of lead wire wound outside core +above 1 There are two ferrite material options for KEMET = 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 EMI Cores: Nickel Zinc (NiZn) and Manganese = 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 Zinc (MnZn). Each core material has a different Fig.1 How to adequate insulation before count turns insulation before use. Fig.2 adequate Relationship between impedance an use. d turn counts Figure 3 – Effective band range of MnZn and NiZn ferrite core material. resistance and effective frequency range. The MnZn Mn-Zn series vs Ni-Zn series ｜Z｜-f Characteristics (representative example) Mn-Zn series vs Ni-Zn series ring core) ｜Z｜-f Characteristics (r (Representative example, measured with same-dimension core material has a lower resistance compared to condition: ring core) There are two materials of ferrite, Ni-Zn(measurement series and Mn-Zn sermeasured with same-dimension ies. Ni-Zn series is e (measurement condition: measured with same-dimensi 1000 ive for kHz band range. the NiZn; therefore, adequate insulation is required 1000 e band range i s a reference only. Examination of s Note that above before use. with actual instrument is necessary. AM band range FM band range Impedance (Ω) It is recommended to measure the actual frequency 100 range effectiveness in the target application. AM band range 10 FM band range 1 0.01 0.1 Fig.3 1 10 100 1000 Frequency (MHz) 1 0.1 One te 1KEMET 10 world. One Frequency1 (MHz) E5005_ESD-SR • 3/25/2015 0.01 © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com Fig.3 1 NiZn ser NiZn series core MnZn series core 10 Impedance (Ω) Impedance (Ω) As Mn-Zn series has lower resistance compared to Ni-Zn series, make AM bandsure rangeto provide The NiZn core material is typically effective for NiZn series core adequate insulation before use. 100 frequencies in the MHz band range such as the 100 vs Ni-Zn series ｜Z｜-fMnZn Characteristics (representative example) series core FM-band, while the MnZn core material is typicallyMn-Zn series(measurement condition: measured with same-dimension ring core) MnZn series core effective for the kHz band range such as the AM- 1000 10 band. See Figure 3. EMI SD-SR Series Temperature Index : 65˚C CTI : Rank 0 EMI Cores – ESD-SR Series Snap-on Cores for Round Cables Dimensions – Millimeters Shape and Dimensions 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-□□□ （blank）Black 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. ESD-SR-100 1000 Impedance () Table 1 – Ratings & Part Number1TReference 100 10 1 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 Impedance () 1000 MI Core 8 Flame Class : UL94V-0 ESD-SR-110 1T 100 Dimensions (mm) 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 10 C Maximum 21.0 28.0 18.51 1 33.0 37.4 39.0 38.0 20.5 15.5 øD Weight (g) Case Color1 ≤ 6.0 7.2 ≤ 5.0 6.9 ≤ 6.010 4.1100 ≤ 6.0 13.3 Frequency (MHz) ≤ 7.0 23.4 ≤ 9.0 22.7 ≤ 13.0 59.5 ≤ 8.0 12.9 ≤ 14.5 21.3 Black, Gray, Violet Black, Gray, Violet Black 1000 Black, Gray, Violet Black, Gray, Violet Black, Gray, Violet Black, Gray, Violet Black Black 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. © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com E5005_ESD-SR • 3/25/2015 2 D D A C A C ESD-SR-□□□ （blank）Black 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 © KEMET Electronics Corporation • P.O. Box Frequency 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com 100 (MHz) 2T 1 10 1 1T Frequency (MHz) E5005_ESD-SR • 3/25/2015 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 © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com E5005_ESD-SR • 3/25/2015 4 EMI Cores – ESD-SR Series Snap-on Cores for Round Cables KEMET Corporation World Headquarters Europe Asia Southern Europe Sasso Marconi, Italy Tel: 39-051-939111 Northeast Asia Hong Kong Tel: 852-2305-1168 Mailing Address: P.O. Box 5928 Greenville, SC 29606 Skopje, Macedonia Tel: 389-2-55-14-623 Shenzhen, China Tel: 86-755-2518-1306 www.kemet.com Tel: 864-963-6300 Fax: 864-963-6521 Central Europe Landsberg, Germany Tel: 49-8191-3350800 Corporate Offices Fort Lauderdale, FL Tel: 954-766-2800 Kamen, Germany Tel: 49-2307-438110 North America Northern Europe Harlow, United Kingdom Tel: 44-1279-460122 Taipei, Taiwan Tel: 886-2-27528585 Espoo, Finland Tel: 358-9-5406-5000 Southeast Asia Singapore Tel: 65-6701-8033 2835 KEMET Way Simpsonville, SC 29681 Southeast Lake Mary, FL Tel: 407-855-8886 Northeast Wilmington, MA Tel: 978-658-1663 Central Novi, MI Tel: 248-306-9353 Beijing, China Tel: 86-10-5877-1075 Shanghai, China Tel: 86-21-6447-0707 Seoul, South Korea Tel: 82-2-6294-0550 Penang, Malaysia Tel: 60-4-6430200 Bangalore, India Tel: 91-806-53-76817 West Milpitas, CA Tel: 408-433-9950 Mexico Guadalajara, Jalisco Tel: 52-33-3123-2141 Note: KEMET reserves the right to modify minor details of internal and external construction at any time in the interest of product improvement. KEMET does not assume any responsibility for infringement that might result from the use of KEMET Capacitors in potential circuit designs. KEMET is a registered trademark of KEMET Electronics Corporation. © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com E5005_ESD-SR • 3/25/2015 5 EMI Cores – ESD-SR Series Snap-on Cores for Round Cables Disclaimer This product has been made available through a Private Label Agreement and a Development and Cross-Licensing Agreement between KEMET and NEC TOKIN to expand market and product offerings for both companies and their respective customers. For more information, please visit http://www.kemet.com/nectokin. 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. Any technical advice inferred from this Information or otherwise provided by KEMET with reference to the use of KEMET’s products is given gratis, and KEMET assumes no obligation or liability for the advice given or results obtained. Although KEMET designs and manufactures its products to the most stringent quality and safety standards, given the current state of the art, isolated component failures may still occur. Accordingly, customer applications which require a high degree of reliability or safety should employ suitable designs or other safeguards (such as installation of protective circuitry or redundancies) in order to ensure that the failure of an electrical component does not result in a risk of personal injury or property damage. Although all product–related warnings, cautions and notes must be observed, the customer should not assume that all safety measures are indicted or that other measures may not be required. © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com E5005_ESD-SR • 3/25/2015 6