1© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard FS8005_MSR • 10/9/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
One world. One KEMET
Benets
• Magneticuxconvergenceimprovement–increasesthe
relativepermeability(u’)whilekeepingthemagneticloss
(u”) low.
• Effective carrier frequency 13.56 MHz and below
• Resistanttoshock,notbrittle
• Thin,exiblematerialusedinportableequipment
• Virtuallynolimitationinwhereitcanbeused
• Less time required for installation
• Easilycutintoanyshape
• EasilylaminatestheFlexSuppressor®rolltothetagroll
• RoHScompliantandhalogen-free
Overview
TheKEMETMagneticSheetforradiofrequency
identication(RFID)FlexSuppressor®prevents
interference between a loop antenna and metallic objects
andeffectivelyimprovesthecommunicationrangeofRFID.
Theexiblesheetisapolymerbase,blendedwithmicron-
sizedmagneticpowdersdispersedthroughoutthematerial.
Thesesheetsimprovethemagneticuxconvergenceand
canbecutintoavarietyofshapesandsizes.
Applications
•Cellphonewithradiofrequencyidentication(RFID)
function
• ContactlessICcard
• RFIDreader/writer
• RFIDtag
FlexSuppressor®
Magnetic Sheet for RFID
SheetType Roll Type
2© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard FS8005_MSR • 10/9/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Flex Suppressor®
Magnetic Sheet for RFID
Part Number System
M4 (100)- 240 X 240 T0800
Series Thickness StandardDimensions AdhesiveTapeThickness
M4
RM4A
(100)- = 0.1 mm
(200)- = 0.2 mm
(300)- = 0.3 mm
(01)- = 0.1 mm
(02)- = 0.2 mm
(025)- = 0.25 mm
(03)- = 0.3 mm
90X70=Sheet90mmx70mm
185X70=Sheet185mmx70mm
240X240=Sheet240x240mm
240X20M=Roll240mmx20m
240X30M=Roll240mmx30m
240X50M=Roll240mmx50m
220X185=Sheet220mmx185mm
T0800 = 0.03 mm
Blank=Noadhesivetape
Specications
Features
High Magnetic Permeability &
Low Magnetic Loss Type
Series M4 RM4A
Effective Carrier Frequency 13.56 MHz and below
Operating Temperature (°C) –40to+105 –40to+85
Thickness(mm) 0.1/0.2/0.3 0.1/0.2/0.25/0.3
StandardDimensions(mm)
240 X 240
(Roll on request)
220 X 185
Permeability at 13.56 MHz
40 typical 50 typical
0
10
20
30
40
50
1 10 100 1,000
Permeability µ
Frequency [MHz]
13.56 MHz
0
10
20
30
40
50
60
1 10 100 1,000
Permeability µ
Frequency [MHz]
13.56 MHz
SpecicGravity13.1 typical 3.6 typical
SurfaceResistivity(Ω/sq.) 1.0 X 107 typical
Approved Standard
UL 94 HB
UL File No. E176124
–
Environment
RoHS Compliant
Halogen Free
PVC Free
Lead Free
RedPhosphorus Free
1 Value in 23°C atmosphere.
Above specications are for the Flex Suppressor® only (adhesives, etc., not included.)
3© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard FS8005_MSR • 10/9/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Flex Suppressor®
Magnetic Sheet for RFID
Table 1 – Ratings & Part Number Reference
Part Number Series Thickness Tape
Thickness Permeability Specic
Gravity
Surface
Resistivity Weight
mm mm at 13.56 MHz Typical Ω/sq. typical g
M4(100)-90X70T0800
M4
0.1
0.03
40
3.1
7
2.08
M4(100)-185X70T0800
M4
0.1
0.03
40
3.1
7
4.28
M4(100)-240X240T0800
M4
0.1
0.03
40
3.1
7
19.04
M4(100)-240X50M
M4
0.1
--
40
3.1
7
3,479.17
M4(100)-240X50MT0800
M4
0.1
0.03
40
3.1
7
3,966.67
M4(200)-90X70T0800
M4
0.2
0.03
40
3.1
7
3.91
M4(200)-185X70T0800
M4
0.2
0.03
40
3.1
7
8.04
M4(200)-240X240
M4
0.2
--
40
3.1
7
33.41
M4(200)-240X240T0800
M4
0.2
0.03
40
3.1
7
35.75
M4(200)-240X30M
M4
0.2
--
40
3.1
7
4,176.25
M4(200)-240X30MT0800
M4
0.2
0.03
40
3.1
7
4,468.75
M4(300)-90X70T0800
M4
0.3
0.03
40
3.1
7
5.74
M4(300)-185X70T0800
M4
0.3
0.03
40
3.1
7
11.79
M4(300)-240X240
M4
0.3
--
40
3.1
7
50.11
M4(300)-240X240T0800
M4
0.3
0.03
40
3.1
7
52.45
M4(300)-240X20M
M4
0.3
--
40
3.1
7
4,175.83
M4(300)-240X20MT0800
M4
0.3
0.03
40
3.1
7
4,370.83
RM4A(01)-90X70T0800
RM4A
0.1
0.03
50
3.6
7
2.52
RM4A(01)-185X70T0800
RM4A
0.1
0.03
50
3.6
7
5.19
RM4A(01)-220X185T0800
RM4A
0.1
0.03
50
3.6
7
16.31
RM4A(02)-90X70T0800
RM4A
0.2
0.03
50
3.6
7
4.79
RM4A(02)-185X70T0800
RM4A
0.2
0.03
50
3.6
7
9.85
RM4A(02)-220X185T0800
RM4A
0.2
0.03
50
3.6
7
30.96
RM4A(02)-220X185
RM4A
0.2
--
50
3.6
7
29.31
RM4A(025)-90X70T0800
RM4A
0.25
0.03
50
3.6
7
5.93
RM4A(025)-185X70T0800
RM4A
0.25
0.03
50
3.6
7
12.18
RM4A(025)-220X185T0800
RM4A
0.25
0.03
50
3.6
7
38.29
RM4A(025)-220X185
RM4A
0.25
--
50
3.6
7
36.63
RM4A(03)-90X70T0800
RM4A
0.3
0.03
50
3.6
7
7.06
RM4A(03)-185X70T0800
RM4A
0.3
0.03
50
3.6
7
14.51
RM4A(03)-220X185T0800
RM4A
0.3
0.03
50
3.6
7
45.61
RM4A(03)-220X185
RM4A
0.3
--
50
3.6
7
43.96
mm mm at 13.56 MHz Typical Ω/sq. typical g
Part Number Series Thickness Tape Thickness Permeability
Specic
Gravity Surface Resistivity Weight
4© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard FS8005_MSR • 10/9/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Flex Suppressor®
Magnetic Sheet for RFID
Applications
Passing
magnetic flux
Media
Magnetic flux
Reader
Magnetic sheet
Metal
Absorbed
magnetic flux
Media
Magnetic flux
Reader
Metal
Effect of magnetic sheet
(improved communication range)
Communication disturbance by metal
(degraded communication range)
Transmission
distance
decreases
Magnetic energy
is consumed as
electric current
inside the metal
Functions as magnetism
deflection yoke
FLEX SUPPRESSOR®
Metal part (e.g. case)
IC Card
Loop antenna
Magnetic field
lines
Transmission
distance
increases
Devices RFID Transmission
Quality Improvement
Mobilephone
For communication distance
improvement
Notebook PC and tablet
RFIDcardreader/writer
RFIDcardandtag
Communication distance
enhancement RFID antenna
FLEX SUPPRESSOR®
ApplicationexampleinacellphonewithRFIDfunction. LaminatingtheFlexSuppressor®rolltothetagroll
5© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard FS8005_MSR • 10/9/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Flex Suppressor®
Magnetic Sheet for RFID
Applications (cont’d)
CommunicationdistanceevaluationofacellphoneRFIDantenna.
* This data does not represent guaranteed values.
RFID circuit b oar d antenna for mobile
phones
(About 40 mm × 30 mm)
Circuit board antenna only
(in open space)
Circuit board antenna with
a metal plate in its proximit y
RM4A installed between the
circ uit board and a metal plate
ISO / IEC 180 92 compatible
Contactless reader/writer
Measurement of the ma ximum
communication distance of both of
the above (3 levels)
Communication distance (mm)
160
140
120
100
80
60
40
20
0
Circuit board
antenna only
Cir c uit board antenna
+ metal plate Cir c uit board antenna
+ RM4A + metal plate
6© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard FS8005_MSR • 10/9/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Flex Suppressor®
Magnetic Sheet for RFID
Examples of Shapes
KEMETFlexSuppressor®sheetscanbecutintoavarietyofshapesandsizes:
With holes, cut-out shapes, and circular shapes Precut
Reel Roll With Aluminum or PET sheet
Someexamplesofcustomization,availableuponrequest:
• TheuseofPETlminthefront,forinsulationormechanicalsupport
• Theuseofaluminumsheetinthefront,forshieldingeffect
• Theuseofdifferentadhesivetapesontheback-stronger,thinner,thicker,etc.
Customization Examples
Where
Function
PET Film Front Insulationormechanicalsupport
Aluminumsheet Front Shieldingeffect
Differentadhesivetape Back
Strongeradhesivetape
Thinnerorthickertape
Reowcapable,double-sidedtape
7© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard FS8005_MSR • 10/9/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Flex Suppressor®
Magnetic Sheet for RFID
Permeable Characteristics
0
10
20
30
40
50
1 10 100 1,000
Permeability µ
Frequency [MHz]
13.56 MHz
M4
0
10
20
30
40
50
60
1 10 100 1,000
Permeability µ
Frequency [MHz]
13.56 MHz
RM4A
8© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard FS8005_MSR • 10/9/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Flex Suppressor®
Magnetic Sheet for RFID
Handling Precautions
Avoidhightemperature,humidityanddirectsunlight.Storageenvironmentshouldbebelow40ºCandbelow70%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representtheproduct’sinsulationcharacteristics.Thevaluemaybecomelowerifan
excesspressureisappliedtotheproduct.Theproductsinthisdatasheetarenotinsulators,theyneedtobehandledas
conductors.Caremustbetakenwheninuse,sothatconductivematerialdoesnotcontactthesurfaceortheedgeof
theFlexSuppressor®sheet.Insulationprocessshouldbeperformedwhencontacttoconductivematerialisprobable.
Dependingontheprocessingprocedure,powderysubstancemaydropoutfromsheetsurfaceortheedge,ifthecutting
ofthesheetisperformed.Dependingonthelocation,caremustbetaken,asthispowdermayeffectthecomponent’s
performance.
Anydust,oilormoisturemustbecleanedfromthesurfaceoftheinstallationareawhenusinganadhesivetapetoattach
thesheet.Theadhesivetapemaybegintolosesomeofitsadhesivenessafterbeinginstorageforsixmonths.Thishasno
impactontheEMIlteringeffectiveness.
Export Control
For customers in Japan
Forproductsthatarecontrolleditemssubjecttothe“ForeignExchangeandForeignTradeLaw”ofJapan,theexportlicense
speciedbythelawisrequiredforexport.
For customers outside Japan
FlexSuppressor®productsshouldnotbeusedorsoldfortheuseinthedevelopment,production,stockpilingorutilization
ofanyconventionalweapons,mass-destructionweapons(nuclear,chemicalandbiologicalweaponsormissiles)orany
otherweapons.
9© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard FS8005_MSR • 10/9/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Flex Suppressor®
Magnetic Sheet for RFID
Information on environmentally inuential substances
TheFlexSuppressor®doesnotcontainanyofthesubstanceslistedbelow:
(1) Ozone depleting substance
• CFC(chlorouorocarbon)
• Halon
•Carbontetrachloride
•1,1,1-Trichloroethane
•HCFC(hydrochlorouorocarbon)
•HBFC(hydrobromuorcarbon)
•Methylbromide
(2) Substances regulated by RoHS Directive
• Lead and lead compound
• Mercury and mercury compound
•Cadmiumandcadmiumcompound(contentofplasticsthatarebelow5ppm)
•Hexavalentchromiumandhexavalentchromiumcompound
•PBB(polybrominatedbiphenyl)anditskind
•PBDE(polybrominateddiphenylether)
(3) Other environmentally inuential substances (examples)
•PCB(polychlorinatedbiphenyl)
•Polychlorinatednaphthalene
•Hexachlorobenzene
•Organotincompounds(tributyltin,triphenyltin)
• Asbestos
• Azo compound
•Chlorinatedparananditskind(paranchloride,chlorinatedparanandchloroparan)
• Radioactive substance
• PVC
10© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard FS8005_MSR • 10/9/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Flex Suppressor®
Magnetic Sheet for RFID
KEMET Electronics Corporation Sales Offi ces
Foracompletelistofourglobalsalesoces,pleasevisitwww.kemet.com/sales.
Disclaimer
Allproductspecications,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specicallydisclaims–anywarrantyconcerningsuitabilityforaspecic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 is a registered trademark of KEMET Electronics Corporation.