Noise suppression sheet Vol. 14

Transcription

1 Noise suppression sheet Vol. 4

2 An EMI suppressor sheet that insures clean electromagnetic environments. The secret of FLEX-SUPPRESSOR an EMI suppressor-lies in its structure, where ultra-thin magnetic metal foils on the micron order overlap each other in the same direction. Because of this unique configuration, FLEX-SUPPRESSOR can suppress noise at a level surpassing that of ferrite-based devices. FLEX-SUPPRESSOR absorbs harmful noises and converts them into heat to create clean electromagnetic environments.

3 Outline This product is a sheet type noise suppressor effectively suppressing high frequency noise generated from electronic devices. It is particularly effective for preventing wide-band, highfrequency EMC that has not been successfully eliminated with conventional ferrite and ceramic parts. Usable in quasi microwave ranges can be used in highspeed clocks ( MHz to GHz) Thin, flexible material can be used in portable equipment Virtually no limitation in where it can be used less time required for installation Can be manufactured in a variety of shapes/sizes usable in a wide variety of applications Resonance suppression Controls the high frequency current and suppresses unwanted electromagnetic resonance by creating impedance. Electromagnetic wave suppression Suppresses the electromagnetic wave intruding the sheet by the magnetic loss of its composition. Applications Radiation noise suppression in all kinds of electronic equipment Quasi microwave range interference prevention inside and in between electronics. Mobile communications equipment, wireless equipment (BS,CS tuners), office automation equipment (personal computers,tft LCDs,etc.), communication terminals in audio/video equipment, digital exchanges, etc. Intellectual Property Right FLEX-SUPPRESSOR is a registered trademark of NEC TOKIN. FILM IMPEDOR is a registered trademark of NEC TOKIN. The FLEX-SUPPRESSOR and the FILM IMPEDOR hold patent number and other intellectual property regarding its structure, manufacturing process and usages. 2

4 F L E X - S U P P R E S S O R Outline A composite magnetic body in the form of sheet made by blending and dispersing micron sized magnetic material powders in a polymer base High permeability type FK2 has =. times greater than K4E and superior to R4N type. Nearly half the thickness maintaining equal effect ideal for small devices. In open space Acts as EMI suppressor to radiated noise waves. Affixing on boards and cables Attenuation of noise current in the signal line. Suppression of noise radiation from cables. Structural Diagram Single layer Magnetic material layer Specifications * Structure Frequency range Operating temperature Thickness Dimensions Standard Maximum Specific gravity *2 Tensile strength Surface resistance Thermal conductivity Approved standard Environment Relative magnetic permeability (atmhz) Remarks Classification *3 RoHS Others ( C) (Mpa) ( ) (W/m K) 2 (typ.) * Above specifications are for Flex-suppressor alone. (adhesives and etc. not included) *2 Value in 23 C atmosphere K4E () T S Standard specifications Heat resistance specifications Low frequency specifications Low frequency specifications K4E TS7 R4N FK2 Single layer MHz to GHz MHz to 3GHz -2 to +8-4 to + -2 to +8.3,.,..,..,.2,.3,.,..,.2,.3, (typ.) 3.3 (typ.) 3. (typ.) 3.4 (min.) 3.9 (min.) 3.8 (min.) 4. (min.). 6 ( min.). ( min.). 6 ( min.).22 (typ.).47 (typ.).4 (typ.).3 (typ.) UL94 V- UL94 V- Standard model Heat resistant model of K4E precut type *4 Adhesive tape (With thin-type adhesive tape T8) Size Thickness(3:.3mm,:.mm,:.mm) UL File No.E7624 Compliant PVC Free, Lead Free 6 (typ.) 6 high permeability. Low frequency applicable. Various thickness. (typ.) Higest market standard permeability of 3 *3 Please contact local sales representative for detailed specification. *4 Flex-suppressor and adhesive layer are being cut into designeted form but the release paper below is left uncut for handling convenience.

5 F L E X - S U P P R E S S O R Halogen free type EFR HALOGEN FREE Outline Lowered impact to the environment. Halogen free Highest level permeability in the market among halogen free type. ( =6) Equivalent permeability as conventional R4N type Flame resistant UL94V- Structural Diagram Single layer Magnetic material layer Specifications * Structure Frequency range Operating temperature Thickness Dimensions Standard Maximum Specific gravity *2 Tensile strength Surface resistance ( C) (Mpa) ( ) Thermal conductivity (W/m K) Approved standard Environment RoHS Others Relative magnetic permeability (atmhz) Remarks Standard specifications EFR Single layer MHz to 3GHz -4 to +.,.,.2,.3,., (typ.) 3.6 (min.). 6 ( min.).22 (typ.) UL94 V- UL File No.E7624 Compliant Halogen free, PVC free, Lead free 6 (typ.) Flame resistant UL94 V- and highest level permeability in the market =6 plus it is halogen free. * Above specifications are for Flex-suppressor alone. (adhesives and etc. not included) *2 Value in 23 C atmosphere Classification *3 EFR () T S precut type *4 Adhesive tape ( With thin-type adhesive tape T8) Size Thickness(:.mm) *3 Please contact local sales representative for detailed specification. *4 Flex-suppressor and adhesive layer are being cut into designeted form but the release paper below is left uncut for handling convenience. 4

6 F L E X - S U P P R E S S O R Multi-Layer Outline A uniquely developed conductive layer is inserted in this model. Effective in preventing interference between substrates. Now available in thin types. Structural Diagram Double layer Conductive layer Magnetic material layer Triple layer Magnetic material layer Conductive layer Magnetic material layer Specifications * Structure Frequency range Operating temperature Thickness ( C) Dimensions Standard Maximum Specific gravity *2 Tensile strength (Mpa) Surface resistance ( ) Thermal conductivity (W/m K) Approved standard Environment RoHS Others Relative magnetic permeability (atmhz) *4 Remarks Standard specifications 3GF Triple layer, Thin type 3GT Double layer, Thin type 2GT Triple layer Double layer MHz to GHz -2 to +8..2,.3, (typ.) 2.4 (typ.) 4.4 (min.). 4 ( min.).4 (typ.) UL94 V- MHz to 3GHz.2, (typ.) 4. (min.). (min.) *3.3 (typ.) UL File No.E7624 Compliant PVC Free, Lead Free 2(typ.) (typ.) A composite model made of magnetic layers combined with shields. * Above specifications are for Flex-suppressor alone. (adhesives and etc. not included) *2 Value in 23 C atmosphere *3 3GT(2) and 2GT(2)=. 2 (min.) *4 Magnetic layer only Classification * 3GF () T S precut type *6 Adhesive tape (With thin-type adhesive tape T8) Size Thickness 3GF, 2GT(2:.2mm, 3:.3mm, :.mm) 3GT(2:.2mm, 3:.3mm, 4:.4mm) * Please contact local sales representative for detailed specification. *6 Flex-suppressor and adhesive layer are being cut into designeted form but the release paper below is left uncut for handling convenience. Caution Multi-Layer type Flex-suppressor sheets have conductive layer. Avoid contact of conductive parts of boards and etc. to the surface and the edge of the sheets.

7 F L E X - S U P P R E S S O R High Thermal Conductivity HALOGEN FREE Outline With times greater thermal conductivity, compared to conventional K4E type, this model can cunteract to the noise and the heat at the same time. Heat resistant up to 3 C. Flame resistant. Halogen free. Structural Diagram Single layer Magnetic material layer Specifications * Structure Frequency range Operating temperature Thickness ( C) Standard specifications HF2 Single layer MHz to GHz -4 to +3.3,.,. Dimensions Specific gravity *2 Tensile strength Standard Maximum (Mpa) (typ.). (min.) Surface resistance ( ). 6 ( min.) Thermal conductivity Approved standard (W/m K) 2. (typ.) UL94 V- UL File No.E7624 Environment Remarks RoHS Others Compliant PVC Free, Lead Free Thermal conductivity improved model. * Above specifications are for Flex-suppressor alone. Adhesive layer not included (For thermal cordnctivity, the value includes adhesive layer.) *2 Value in 23 C atmosphere Classification *3 HF2 () T26 S precut type *4 Adhesive on one side Size Thickness(3=.3mm, =.mm, =.mm) *3 Please contact local sales representative for detailed specification. *4 Flex-suppressor and adhesive layer are being cut into designeted form but the release paper below is left uncut for handling convenience. Thermal resistance * Specification Sheet Size HF2 (3) HF2 () HF2 () mm mm 2mm 2mm 3mm 3mm * Above values are calculated from the formula below. Formala R R:Thermal resistance( ) :Thermal conductivity(w/m K) L:Specimen's thickness(m) A:Specimen's area(m 2 ) 6

8 F I L M I M P E D O R Outline Achieved high permeability while maintaining thickness at 2 and m. By affixing on signal line such as printed board and flat cable, this model reduces high frequency noise coupling between lines or between line and the ground, thereby suppressing high frequency noise. Best suits for application in thin devices. Structual Diagram.2 to.mm Magnetic material layer Specifications * Ultra-thin E2 Structure Single layer Frequency range MHz to 3GHz Operating temperature ( C) -2 to +8 Thickness.2 Dimensions Standard 8 8 Maximum 24 Specific gravity *2 2.9 (typ.) Tensile strength (Mpa) 2. (min.) Surface resistance ( ). 6 ( min.) Approved standard UL94 V- UL File No.E7624 Environment RoHS Compliant Others PVC Free, Lead Free Relative magnetic permeability (atmhz) (typ.) Remarks Super thin type * Above specifications are for Film Impedor alone. (adhesives and etc. not included) *2 Value in 23 C atmosphere E. When & Where Film Impedor is used. Classification *3 Apply on signal lines or ground line (frame grounding) Lowers the high frequency noise on the line. Case : Loosen the magnetical coupling between lines. Case 2 : Lower the noise radiation from cables and casing (Lowers the Q factor) E T8 S precut type*4 Adhesive tape(t8:with thin-type adhesive tape) Size Thickness(2:2 m, : m) *3 Please contact local sales representative for detailed specification. *4 Flex-suppressor and adhesive layer are being cut into designeted form but the release paper below is left uncut for handling convenience. Case Coupled lines Loosen the coupling Case 2 Radiation noise Lower the Q factor PCB Flat ribbon cables 7

9 Precautions Handling precautions Avoid high-temperature, humidity and direct sunlight. Storage environment should be below 4C and below 7% relative humidity. The surface resistance value listed in this catalog is a reference value of the circuit parameter to indicate noise suppression. The value does not mean the product's insulation characteristics. The value may become lower if an excess pressure is applied to the product. Products in this catalog are not insulators. Please handle them as conductors. When in actual use, please be careful so that conductive material does not contact the surface or the edge of Flex-Suppressor or Film Impedor sheet. Insulation process should be performed when contact to conductive material is probable. Handling of the products The manufacturer's warranty will not cover any disadvantage or damage caused by improper use of the products that deviates from the characteristics, specifications, or conditions for use described in this catalog. The products in this catalog are intended for use in ordinary electronic products. We withhold the selling of the products if any of them are to be used in special applications requiring extremely high reliability where product defects might pose a safety risk and human life. Though the manufacturer has taken all possible precautions to ensure the quality and reliability of its products, improper use of products may result in bodily injury, fire, or similar accident. If you have any questions regarding the use of the products in question, please consult your NEC TOKIN sales representatives. Please be advised that the manufacturer accepts no responsibility for any infraction by users of the manufacturer's products on third party patents or industrial copyrights. The manufacturer is responsible only when such infractions are attributable to the structural design of the product and its manufacturing process. Guarantee of characteristic value Descriptions in this catalog regarding product characteristics and quality are based solely on discrete components. When using these components, be sureto check the specifications with the component in question mounted on the products. Depending upon the processing procedure, powdery substance may drop out from sheet surface or edge if the cutting of the sheet is performed at the customer side. Please be careful as this powder may effect the component's performance depending on the location. Clean away any dust, oil or moisture from the surface of the installing area when attaching the sheet using adhesive tape. Should any of these products come under the category of strategic goods or services (according to Japan's foreign trade and foreign exchange regulations), the sender must obtain an export license from the Japanese Government before said products can be exported outside Japan. Please be advised that manufacturer accepts no responsibility for damages resulted from the misunderstanding of technical information shown in this catalog. Also, information shown in this catalog are subject to change without notice. Please contact local NEC TOKIN sales representative for updated information. No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC TOKIN Corporation. The names of the products and the specifications in this catalog are subject to change without notice for the sake of improvement. The manufacturer also reserves the right to discontinue any of these products. At the time of delivery, please ask for specifications sheets to check the contents in order to use the products properly and safely. Information on environmentally influential substances The Flex-suppressor and the Film Impedor does not contain substances listed below: () Ozone depleting substance CFC (chlorofluorocarbon) Halon Carbon tetrachloride,,-trichloroethane HCFC (hydrochlorofluorocarbon) HBFC (hydrobromfluorcarbon) Methyl bromide (2) Substances regulated by RoHS order Lead and lead compound Mercury and mercury compound Cadmium and cadmium compound (content of plastics are below ppm) Hexavalent chromium and hexavalent chromium compound PBB (polybrominated biphenyl) and its kind PBDE (polybrominated diphenylether) (3) Other environmentally influential substances (examples) PCB (polychlorinated biphenyl) Polychlorinated naphthalene Hexachlorobenzene Organotin compounds (tributyl tin, triphenyl tin) Asbestos Azo compound Chlorinated paraffin and its kind (paraffin chloride, Chlorinated paraffin and chloroparaffin) Radioactive substance PVC *Please contact our sales person for details 8

10 Shielding Shielding materials (metal, electrically conductive material) Shield Radio wave absorbers radio wave absorber While transmitted waves can be minimized, most of the incoming waves are reflected, causing internal interference. High-frequency electric current occurs on the metal surfaces and reflected noise occurs at the shielding joints, metal openings, and other parts when the grounding is poor. Reflected waves Incoming waves Reflected waves To prevent reflection, electromagnetic energy is absorbed and converted into heat. Incoming waves Heat conversion Transmitted waves Metal surface High-frequency electric current Shielding material + radio wave absorber Shielding material + Radio wave absorber Transmitted waves and reflected waves can be minimized by mounting metal plates on the back of radio wave absorbers. Reflected waves radio wave absorber Heat conversion Shield Reference : Other absorbing and reflecting examples Absorbing Radio waves Radio waves absorbers Light Black objects Sound Absorbers, Felt Reflecting Metals White objects, Mirrors Solid bodies (Concrete, etc.) Incoming waves Reflected waves Heat conversion Transmitted waves Applications Case To suppress noise reflected by casing Case4 To suppress noise from cables Case2 To suppress cross talk between substrates Wrap FLEX-SUPPRESSOR around cable. Caution: Must be covered with heat shrink material(case 4) Apply directly to flat cable.(case 4) Apply directly to casing (Case ) Apply between boards (Case 2) Case3 To suppress radiation noises from LSI and IC Case To suppress noise radiation (reflected noise) from the opening of shield, casing, etc Apply directly to circuit board line (Case 3) Apply directly to top of LSI or IC (Case 3) Shielded casing Opening Attached around opening (Case ) Insulation process should be performed when there is contact to conductive material High-frequency current on shielded surface Suppressing radiation Typical shapes With holes, cut-out shapes, circular shapes Precut Tape & reel With aluminum or PET sheet 9

11 Noise suppressor Flex-suppressor Applications Devices Noise radiation suppression Internal interference suppression RFID transmission quality improvement Anti-ESD measure Anti-SAR measure Mobile phone On base band LSI On FPC and LSI for LCD module and camera module On base band LSI reception improvement On loop antenna Communication distance improvement On FPC and LSI of LCD module and camera module On metal parts such as chasis Near antenna Around touch panel DSC/DVC On CCD module FPD, image processing LSI, and Memory slot On the board On the board and FPC On metal parts such as chasis Notebook PC On CPU and GPU On cables inside LCD panel On I/O e.g. PCMCA and memory slot On the TV tuner beat noise countermeasure On wireless LAN module On loop antenna and metal parts near antenna Communication distance improvement On CPU and GPU On metal parts such as chasis CD/DVD On LSI and FPC near optical pickup On MPEG chip On the board and on FPC On metal parts such as chasis Car audio & visual On LSI, flexible board On GPS receiver and TV tuner On LSI for LCD Radio reception improvement On metal parts such as chasis RFID/RW On loop antenna, and metal parts near antenna Communication distance improvement Optical reception module On the interior of the chasis and on LSI error rate improvement Wireless LAN On Cable and co-axial cable Reception improvement Scanner HDD On scanner head board and FPC On I/F cable Characteristic Example : Permeability characteristics 2 FK2 8 Permeability 6 R4N EFR 4 2 FK2 EFR R4N K4E K4E Above data are not guaranteed values. Frequency [MHz]

12 Characteristic Example 2 : Radio noise attenuation characteristics in the vicinity of Flex-suppressor. Attenuation level of transmission noise and coupling noise measured by micro loop antenna. Attenuation of transmission noise TYPE / K4E, TS7, HF2 Attenuation of coupling noise Transmission (db) - K4E(),TS7() K4E(3) -2 K4E(),TS7() HF2() Attenuation of transmission noise TYPE / R4N Coupling (db) - K4E(),TS7() K4E(),TS7() K4E(3) - HF2() Attenuation of coupling noise Transmission (db) R4N() R4N(2) R4N(3) R4N() R4N() Coupling (db) - - R4N() R4N(3) R4N(2) R4N() R4N() Attenuation of transmission noise TYPE / FK Attenuation of coupling noise Transmission (db) - -2 FK2(2) FK2() -3 FK2() FK2(3) Attenuation of transmission noise TYPE / EFR Coupling (db) FK2(2) FK2() FK2(3) - - FK2() Attenuation of coupling noise - EFR() EFR(2) -2 EFR(2) EFR() EFR() EFR() EFR(3) EFR() -3 EFR() EFR(3) -4 EFR() EFR() TYPE / 3GF, 3GT, 2GT Attenuation of transmission noise Attenuation of coupling noise 2GT(3) - 3GT(4) -2 3GF() -3 3GT(4) 2GT(3) 3GF() Transmission (db) Transmission (db) Coupling (db) Coupling (db) Above data are not guaranteed values. In-house measuring method of Characteristic Example 2 Attenuation of transmission noise Loop Antenna Attenuation of coupling noise Loop Antenna

13 Characteristic Example 3 : Transmission noise attenuation characteristics Shown in graphs below are values of transmission loss calculated from the transmission characteristics S and S2 measured on Z= type MSL(Micro Strip Line) with Flex-suppressor and Film Impedor attached. K4E() TYPE / K4E 2GT(3) TYPE / 2GT TYPE / E Series.8.8 2GT(2).8 K4E(3).6.4 K4E() E E TYPE / R4N TYPE / 3GT, 3GF TYPE / TS7 R4N() TS7() R4N(3) R4N() R4N(2).6.4 3GF() 3GT(2) 3GT(3) 3GT(4).6.4 TS7().2 R4N() TYPE / FK2 TYPE / EFR TYPE / HF2.8 FK2().8 EFR() EFR().8 HF2().6.4 FK2() FK2(3) FK2(2).6.4 EFR() EFR() EFR(3) EFR(2).6.4 HF2(3) HF2() Above data are not guaranteed values In-house measuring method of Characteristic Example 3 Characteristic Example 3 : How to read the graph Printed board (FR-4) mm x mm x.6mm Sample mm x mm Incident wave Reflection S Loss Transmission incident transmission S2 Micro strip line.8 refrection S Z= Loss Incident wave Higher loss is preferable Max. Network analyzer

14 N O I S E T R A C E R TM Portable RF Magnetic Field Sensor "NOISE TRACER " Outline Portable RF magnetic field sensor "NOISE TRACER " is specially designed for EMC engineers to search RF noise generated from PWB, portable digital equipment and several RF circuits. Easy and quick search for RF noise sources on the circuit board or in the equipment. How to Use Turn on the switch then bring the tip of the Noise Tracer close to the circuit or the line of the instrument that needs noise suppression. Simply find location and direction where the noise(magnetic field strength) increases by looking at the LED level indicator. By using frequency band switch, approximate frequency range of the noise can be confirmed. Easy to detect high frequency magnetic field Lo(3-3MHz), Hi(-MHz) switching Magnetic field strength indicated by the LED indicator Compact pen shape Very light weight. Less than 4g including battery Applications Check magnetic field strength near PCB patterns and electric devices Trace the noise source or the noise path Pilot test before a precise measurement in an anechoic chamber Find an effective position to affix the noise suppression sheet, "Flex Suppressor " and "Film Impedor " Specifications Frequency range LED Indication Operating temperature ( C) Battery life Operating Voltage Consumption Battery voltage decrease detection Size Weight Specifications Lo ch: 3-3MHz Hi ch: -MHz Level : dbm Level 4: 8 dbm Level 3: dbm Level 2: 4 dbm Level : 7 dbm to 4 Hours (typ.) DC +3.V Max. 3 ma 2.2.3[V] 46(H) 24(W) 22(D) Max. 4g Notes Range can be changed by the switch Typical spec at MHz: Lo ch at MHz: Hi ch Condition : power on, no noise reading Lithium battery CR-23A Condition : all LED lit Including Battery 3

15 N O I S E T R A C E R TM Directly on LSI On flexible cable LED indicator level LED indicator level After affixing the Flex-suppressor After affixing the Flex-suppressor Flex-suppressor Flex-suppressor LED indicator level LED indicator level Approximate indication of the LED indicator level Lo channel Hi channel LEVEL dbm -8dBm -dbm -4dBm -7dBm LEVEL dbm -8dBm -dbm -4dBm -7dBm Frequency [MHz] Frequency [MHz] (Note) The indication level may vary according to the shape of the noise source or the positioning of the Noise Tracer. In-house measuring method LED Antenna Switch Power indicator : power on when lit (back side) Battery lid Cable Signal Generator Output Center Microstrip line W =.6 mm Zc= ohm Center Built-in loop antenna direction LED indicator : level (weak) level (strong) Product appearance vary due to design change. 4