Datasheet
76
www.lairdtech.com
77
www.lairdtech.com
EMI ESSENTIALSEMI ESSENTIALS
MRI "A" FABRIC
MRI “A” FABRIC
Laird MRI “A” Fabric is an EMI/RFI shielding product that is manufactured using a patented, proprietary technology.
The base layer is a metallized non-woven fabric plated with highly conductive copper and nickel for corrosion resistance.
This is bonded to a thin layer of solid aluminum. The resulting material is a lightweight architectural material with superior
shielding effectiveness and outstanding resilience. Specifically, this product provides superior shielding effectiveness well in
excess of industry standards throughout the MRI frequency range. The product can be applied using several standard con-
struction techniques depending upon the installation requirements or specifications. Because of the relative ease of installa-
tion with this product, construction time and therefore, the time to get the MRI facility on-line is greatly reduced.
• Flexible and lightweight
• Corrosion resistant and
highly conductive
• Provides excellent shielding
• Excellent electrical properties
• Fewer seams required
• NFPA Class A Flame rating
All dimensions shown are in inches (millimeters) unless otherwise specified.
PHYSICAL PROPERTIES
ELECTRICAL PROPERTIES
Substrate Metal
Thickness
(ASTM D1777)
Total Weight
oz./yd
2
Max. Short Duration
Temp. (g/m
2
)
Standard Roll
Width inches (cm)
Composite Polyester
Non-woven Fabric
and Foil
Fabric: Nickel/Copper
Foil: Aluminum
0.016 +/- 0.002
(406 +/- 51)
7.5 +/- 1.3
(254 +/- 44)
194°F
(90°C)
51
(130)
Surface Resistivity ASTM F390
ohms/square
Shielding Effectiveness dB (typical)
25.4 MHz 64 MHz 100 MHz 168 MHz 400 MHz
< 0.07 >108* >115* >122* >115* >107*
Tensile Strength CMD/MD
(ASTM D5035)
lb./in (N/100 mm)
Elongation, MD
(ASTM D5035)
20/60 (350/1050) 8%
MECHANICAL PROPERTIES
* Values exceed the dynamic range of the test equipment and were measured in actual MRI shielded enclosures.
3027-532C
Shielding Effectiveness per MIL-STD-285 (mod.)
Frequency (MHz)
Shielding Effectiveness (dB)
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
10
100
1000
10000
100000
CONDUCTIVE FABRIC
For specic material properties, see data summary chart
Product No. Material Description Application
3027-217
Ni/Cu Polyester
Nonwoven
The base layer is the highly conductive copper, with an outer layer of nickel for
corrosion resistance. Combines the properties of these metals with the lightweight,
exibility and breathability of a nonwoven material. Offers excellent surface
conductivity, shielding effectiveness, and corrosion resistance.
Protects against EMI/RFI and ESD for a variety of
applications and environments: architectural shielding,
gaskets, tapes, shielding materials and ribbon.
3027-235
Ni/Cu Polyester
Nonwoven UL94 VTM-0
Combines highly conductive copper and corrosion resistant nickel with the
lightweight, exibility and breathability of a nonwoven material. Offers excellent
surface conductivity, shielding effectiveness and corrosion resistance. This product
achieves the UL94 VTM-0 ammability rating.
Protects against EMI/RFI and ESD for a variety of
applications and environments: architectural shielding,
gaskets, tapes, shielding laminates, and grounding.
3035-535 Ni/Cu Polyester Taffeta
Combines highly conductive copper and corrosion resistant nickel with the
lightweight, exibility, conformability, strength and uniform appearance of a woven.
Nickel/Copper Polyester Taffeta offers excellent surface conductivity, shielding
effectiveness, and reectivity.
Protects against EMI/RFI for a variety of applications
and environments: enclosures, curtains, gaskets, cable
wrap, tapes, shielding laminates, and grounding.
3035-216
Ni/Cu Polyester Taffeta
UL94 V0
Combines highly conductive copper and corrosion resistant nickel with the
lightweight, exibility, conformability, strength and uniform appearance of a woven
material. Provides excellent surface conductivity, shielding effectiveness and a UL94
V0 rating.
Protects against EMI/RFI for a variety of applications
and environments: enclosures, curtains, gaskets, cable
wrap, tapes, shielding laminates, and grounding.
3070-500 Ni/Cu Polyester Mesh
Combines highly conductive copper and corrosion resistant nickel with the
lightweight, exibility, conformability, breathability and uniform appearance of a
knitted mesh. Mesh offers excellent surface conductivity, shielding effectiveness, and
reectivity for a variety of applications.
Protects against EMI/RFI for a variety of applications
and environments: enclosures, curtains, gaskets, cable
wrap, tapes, shielding laminates, and grounding.
3050-525 Ni/Cu Nylon Ripstop
This technology combines highly conductive copper and corrosion resistant nickel
with the lightweight, drapability, strength, exibility, conformability, and attractive
appearance of a Nylon Ripstop. Nickel/Copper Nylon Ripstop offers excellent surface
conductivity, shielding effectiveness, and reectivity.
Protects against EMI/RFI: enclosures, curtains, gaskets,
tapes, shielded laminates, infrared camouage, and
radar reector.
3050-517
Ni/Cu Nylon Ripstop
UL94 V0
This technology combines highly conductive copper and corrosive resistant nickel
with the drapability, strength, exibility, and attractive appearance of a Nylon
Ripstop fabric. Provides excellent surface conductivity, shielding effectiveness, and
UL94 V0 rating.
Protects against EMI/RFI: enclosures, cables, tapes, and
grounding.
3078-500
Ni/Cu Nylon Nonwoven
UL94 V0
Combines highly conductive copper and corrosion resistant nickel with the light
weight, exibility and breathability of a nonwoven material. Offers excellent surface
conductivity, shielding effectiveness and corrosion resistance. This product achieves
the UL94 V0 ammability rating.
Protects against EMI/RFI and ESD for a variety of
applications and environments: architectural shielding,
gaskets, tapes, shielding laminates, and grounding.
All dimensions shown are in inches (millimeters) unless otherwise specied.
NA = Not Applicable
1
Product Specifications
2
Measured per Typical values
3
Typical values for unplated fabric.
4
CD = cross machine direction, MD = machine direction
†
Nominal Value
*
Modified
Flectron
®
metallized fabric combines
highly conductive metals with lightweight
fabric to meet a diverse range of EMI/RFI
shielding requirements.
Manufactured with Laird patented
technology, Flectron metallized fabric
is available in various woven and
non-woven substrate configurations.
Whether used as an architectural
shielding product to shield complete
rooms, or as the shielding material in
EMI gaskets, tapes, and shield laminates,
Flectron fabrics provide a highly effective
shielding system that is cost-effective
and easily applied.
Laird uses a patented technology for applying thin metal coatings of copper and nickel to woven and nonwoven fabrics. As a result, Flectron metallized materials have
the flexibility, conformability and breathability of a fabric with the electrical properties of a metal. This means low surface and through resistivity and excellent shielding
effectiveness.
Product No.
Nominal Thickness
Inches (mm)
Surface
Resistivity
1
(Ohms / square)
(ASTM F390*)
Shielding
2
at
100 MHz/1GHz
(dB)
Tensile Strength
3
CD/MD4 (lb/in)
(ASTM D5035*)
Weight
(oz / yd
2
)
(LT 500)
Max. Short
Duration
Temperature (°C)
Ni/Cu Polyester Nonwoven 3027-217 0.016 (0.4) < 0.07 105/90 7.5/18.5 2.8 – 4.5 210
Ni/Cu Polyester Nonwoven UL94 VTM-0 3027-235 0.016 (0.4) < 0.07 100/100 7.5/18.5 3.6 - 5.7 210
Ni/Cu Polyester Taffeta 3035-535 0.0045 (0.114) < 0.07 80/80 50/75 2.2 – 3.1 210
Ni/Cu Polyester Taffeta UL94 V0 3035-216 0.008 (0.2) < 0.07 80/70 50/75 6† 100
Ni/Cu Polyester Mesh 3070-500 0.007 (0.178) < 0.1 70/60 20/20 1.3 – 2.3 210
Ni/Cu Nylon Ripstop 3050-525 0.005 (0.1) < 0.07 85/75 25/50 2.1 – 2.7 200
Ni/Cu Nylon Ripstop UL94 V0 3050-517 0.008 (0.2) < 0.07 85/75 25/50 5.0 – 6.0 100
Ni/Cu Nylon Nonwoven 3078-500 0.024 (0.6) < 0.07 60/65 280/805 7 – 10 185
FLECTRON
®
PRODUCTS DATA SUMMARY