Flex Suppressor
®
EF Series
Overview
Applications
• Radiation noise suppression for electronic equipment
• Quasi-microwave range interference prevention inside
and in between electronics
• Mobile communications equipment, wireless equipment
(Wi-Fi, Bluetooth), office automation equipment (personal
computers, TFT LCD’s etc.), communication terminals in
audio/video equipment, digital exchanges, etc.
• ESD (electro static discharge) countermeasure
The EF Series Flex Suppressor
®
is an effective suppressor
for high frequency noise generated from electronic devices.
The flexible sheet is a polymer base blended with micron
sized magnetic powders dispersed into the material. The EF
Series are effective for resonance and wave suppression,
and can be cut into virtually any shape.
Benefits
• Usable in quasi-microwave ranges
• Can be used in high-speed clocks (Up to 10 GHz)
• Thin, flexible material used in portable equipment
• Virtually no limitation in where it can be used
• Less time required for installation
• 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
Part Number System
EFR
Series Type
EFR
EFX
EFF
EFA
EFH
EFG
(01)-
Thickness
(003)- = 0.03 mm
(005)- = 0.05 mm
(007)- =0.07 mm
(01)- = 0.1 mm
(02)- = 0.2 mm
(03)- = 0.3 mm
(05)- = 0.5 mm
(10)- = 1.0 mm
240x240
Standard Dimensions
(mm)
240 x 240
T08
Tape 1 Type
Adhesive Tape Thickness
T08 = 0.03 mm
T15 = 0.14 mm
T22 = 0.05 mm
T29 = 0.01 mm
Blank = No adhesive tape
00
Tape 2 Type
00 = Without PET tape
Blank = Without Tape 1 Type
One world. One KEMET
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
FS8001_EF • 3/27/2017
1
Flex Suppressor
®
EF Series
Specifications
Standard
Specifications
EFR
Features
High
Magnetic
Permeability
Type
EFX
Extra High
Magnetic
Permeability
Type
EFF
Up to 10 GHz
−40 to +105
Flame
Retardant
Type, Red
Phosphorus
Free Type
EFA
High
Frequency
EFG
High
Temp.
Reflow
EFH
Type
Effective Frequency
Operating Temperature (°C)
Thickness (mm)
Standard Dimensions (mm)
Specific Gravity
1
Tensile Strength (Mpa)
Surface Resistance (Ω)
Thermal Conductivity (W/m K)
Approved Standard
RoHS
Halogen
Environment
PVC
Lead
Red
Phosphorus
Relative Magnetic Permeability
(at 3 MHz)
0.05/0.1/0.2/
0.3/0.5/1.0
0.05/0.1/0.2/
0.3/0.5
240 x 240
0.07/0.1/0.2/0.3
0.03/0.05/0.1/
(0.2/0.3)
2
240 x 240
(roll on request)
3.1 typical
6.8 minimum
1.0 x 10
6
minimum
1.3
0.05/0.1/
0.2/0.3
0.05/0.1
240 x 240
3.0 typical
3.5 minimum
1.0 x 10
5
minimum
0.22
UL94 V–1
3.1 typical
6.8 minimum
1.0 x 10
6
minimum
1.3
UL94 V–0
UL File No.
E176124
2.8 typical
3.6 minimum
1.0 x 10
6
minimum
0.22
UL94 V–0
3.2 typical
6.8 minimum
3.6 typical
6.9 minimum
1.0 x 10
5
minimum 1.0 x 10
5
minimum
0.22
UL94 HB
UL File No. E176124
Compliant
Free
Free
Free
0.4
UL94 V–0
—
60 typical
Free
100 typical
—
130 typical
Free
60 typical
—
20 typical
Free
60 typical
Industry’s
Excellent
highest magnetic
µ60 high
µ60 high permeability
suppression of
µ100 high
permeability of µ130 permeability. Red
Various thickness
high frequency
permeability
with halogen free
phosphorus free
Remarks
Flame retardant (UL
noise in Wi-Fi
Various thickness composition. Flame Flame retardant (UL
94 V–0 certified)
and higher
retardant(UL 94 V–0
94 V–0 certified)
bandwidths.
certified)
Above specifications are for the Flex Suppressor
®
alone (adhesives and etc. not included)
1
Value in 23°C atmosphere
2
Sheets with 0.2 mm and 0.3 mm thickness are lamination of 0.1 mm sheets.
Can be
mounted
before
reflowing
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
FS8001_EF • 3/27/2017
2
Flex Suppressor
®
EF Series
Table 1 – Ratings & Part Number Reference
Tape
Thickness
Thickness
(mm)
(mm)
0.05
0.1
0.2
0.2
0.3
0.3
0.5
0.5
1
1
0.05
0.1
0.2
0.2
0.3
0.3
0.5
0.5
0.07
0.1
0.2
0.2
0.3
0.3
0.03
0.05
0.1
0.2
0.2
0.3
0.3
0.05
0.1
0.2
0.2
0.3
0.3
0.05
0.1
0.03
0.03
--
0.03
--
0.03
--
0.14
--
0.14
0.03
0.03
--
0.03
--
0.03
--
0.14
0.03
0.03
--
0.03
--
0.03
0.03
0.03
0.03
--
0.03
--
0.03
0.03
0.03
--
0.03
--
0.03
0.05
0.05
Part Number
EFR(005)-240x240T0800
EFR(01)-240x240T0800
EFR(02)-240x240
EFR(02)-240x240T0800
EFR(03)-240x240
EFR(03)-240x240T0800
EFR(05)-240x240
EFR(05)-240x240T1500
EFR(10)-240x240
EFR(10)-240x240T1500
EFX(005)-240x240T0800
EFX(01)-240x240T0800
EFX(02)-240x240
EFX(02)-240x240T0800
EFX(03)-240x240
EFX(03)-240x240T0800
EFX(05)-240x240
EFX(05)-240x240T1500
EFF(007)-240x240T0800
EFF(01)-240x240T0800
EFF(02)-240x240
EFF(02)-240x240T0800
EFF(03)-240x240
EFF(03)-240x240T0800
EFA(003)-240x240T0800
EFA(005)-240x240T0800
EFA(01)-240x240T0800
EFA(02)-240x240
EFA(02)-240x240T0800
EFA(03)-240x240
EFA(03)-240x240T0800
EFG(005)-240x240T0800
EFG(01)-240x240T0800
EFG(02)-240x240
EFG(02)-240x240T0800
EFG(03)-240x240
EFG(03)-240x240T0800
EFH(005)-240x240T2200
EFH(01)-240x240T2200
Series
EFR
EFR
EFR
EFR
EFR
EFR
EFR
EFR
EFR
EFR
EFX
EFX
EFX
EFX
EFX
EFX
EFX
EFX
EFF
EFF
EFF
EFF
EFF
EFF
EFA
EFA
EFA
EFA
EFA
EFA
EFA
EFG
EFG
EFG
EFG
EFG
EFG
EFH
EFH
Relative
Magnetic
Permeability
at 3 MHz
60
60
60
60
60
60
60
60
60
60
100
100
100
100
100
100
100
100
130
130
130
130
130
130
60
60
60
60
60
60
60
20
20
20
20
20
20
60
60
Specific
Gravity
(typical)
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.6
3.6
3.6
3.6
3.6
3.6
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3
3
3
3
3
3
3.1
3.1
Tensile
Strength
(Mpa
minimum)
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.9
6.9
6.9
6.9
6.9
6.9
6.8
6.8
6.8
6.8
6.8
6.8
6.8
3.5
3.5
3.5
3.5
3.5
3.5
6.8
6.8
Surface
Thermal
Resistance Conductivity
(Ω minimum)
(W/m K)
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^6
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^5
1.0 x 10^6
1.0 x 10^6
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.4
0.4
0.4
0.4
0.4
0.4
1.3
1.3
1.3
1.3
1.3
1.3
1.3
0.22
0.22
0.22
0.22
0.22
0.22
1.3
1.3
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
FS8001_EF • 3/27/2017
3
Flex Suppressor
®
EF Series
Shielding
Shielding materials
(metal, electrically conductive material)
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
Metal
surface
High-frequency
electric current
Shield
Reflected
waves
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
Reflected
waves
Incoming
waves
Heat
conversion
Transmitted
waves
Radio wave absorbers
To prevent reflection, electromagnetic energy is absorbed and converted into
heat.
radio wave absorber
Incoming waves
Heat
conversion
Transmitted
waves
Reference: Other absorbing and reflecting examples
Absorbing
Radio Waves
Light
Sound
Radio waves absorbers
Black objects
Absorbers, Felt
Reflecting
Metals
White objects, Mirrors
Solid bodies (Concrete, etc.)
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
FS8001_EF • 3/27/2017
4
Flex Suppressor
®
EF Series
Applications
Case 1 – To suppress noise reflected by casing
Case 2
– To suppress cross talk between substrates
Apply directly to casing
(Case 1)
Apply between boards (Case 2)
Case 3
– To suppress radiation noises from LSI and IC
Apply directly to
circuit board line
(Case 3)
Apply directly to
t op of LSI or IC
(Case 3)
Insulation process should be performed when
there is contact to conductive material
Case 4
– To suppress noise from cables
Wrap Flex Suppressor
®
around cable.
Caution : Must be covered with heat shrink
material (Case 4)
Apply directly to flat cable. (Case 4)
Case 5 – To suppress noise radiation (reflected noise) from
the opening of shield, casing, etc.
Shielded casing
Opening
Attached around opening
(Case 5)
Suppressing radiation
High-frequency current on shielded surface
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
FS8001_EF • 3/27/2017
5
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