• All specifications are subject to change without notice.
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific
bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
IRJ/IFL series
Noise Suppression Sheets
Flexield
For multipurpose
Issue date: March 2010
(1/1)
007-01 / 20100301 / e9d1.fm
• All specifications are subject to change without notice.
Noise Suppression Sheets/Magnetic Sheets/
Radio Wave Absorbers Flexield
FOR NOISE SUPPRESSION IRJ AND IFL MATERIALS
TDK’s Flexield is a highly flexible and shock resistant soft magnetic
sheet material consisting of magnetic material and resin.
It suppresses noise radiated from electronic devices across a wide
frequency range. Offering excellent flexibility in fabrication,
Flexield is a sheet-type noise reduction solution particularly suited
for high-frequency range.
FEATURES
• They are flexible(not crack).
• They are suited for thin and compact devices.
• Available in a wide range of dimensions and shapes.
• Conforming to RoHS Directive.
APPLICATIONS
• Noise reduction for flexible cables used in mobile devices
(including notebook PC's, digital cameras, game machines, and
cellular phones).
• Reduction of noise radiated from a wide variety of electronic
devices (including noise from CPU).
• Reduction of specific absorbed radiation (SAR) from cellular
phones.
• Reduction of internal EMI (resonance, crosstalk) inside a
shielded casing.
PRODUCT IDENTIFICATIONS
(1) Material name
(2) Double-sided tape symbol
No symbol: no double-sided tape used
A: double-sided tape (t=0.17)
AB: double-sided tape (t=0.03)
AT: double-sided tape (t=0.01)
(3) Product process symbol
(4) Length(20: 20mm)
(5) Width(10: 10mm)
(6) Thickness(0.25: 0.25mm)
SPECIFICATIONS
FOR MULTIPURPOSE
Conformity to RoHS Directive
IRJ17 AB H 20 x 10 x 0.25
(1) (2) (3) (4) (5) (6)
Ty p e
(Features/Application)
Flame retardant
High µ/High characteristic
Flame retardant
High µ/Broad frequency band
Flame retardant
High frequency band
Thin type
Halogen-free
Material name IRJ17 IRJ09 IRJ04 IFL10M
Recommended frequency range 5MHz to 3GHz 10MHz to 3GHz 50MHz to 10GHz 10MHz to 3GHz
Operating temperature range (°C) –40 to +85 –40 to +85 –40 to +85 –40 to +85
Initial permeability[at 1MHz]typ. 180 100 40 120
Resistivity (Ω/square) min. 1M 1M 1M 1M
Thermal conductivity(W/m • K) 1.7 1.7 1.5 1.5
Standard sheet dimensions (mm) 300×200 300×200 300×200 300×200
Standard sheet thickness (mm) 0.1 0.2 0.3 0.4 0.5 0.1 0.2 0.3 0.4 0.5 0.1 0.25 0.5 0.05 0.1
Standard sheet weight (g) 21 42 63 84 105 21 42 63 84 105 22 54 108 10 19
Standard double-sided tape
thickness(Adhesive layer) (mm) 0.01 0.03 0.03 0.03 0.03 0.01 0.03 0.03 0.03 0.03 0.01 0.03 0.03 0.01 0.01
Compatible with rolls — — — 9
Density (g/cm3) 3.5 3.5 3.7 3.2
Flame retardant UL94V-0 UL94V-0 UL94V-0 —
Environment RoHS directive RoHS directive — RoHS directive
Halogen-free
•Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and
specific bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
