Datasheet

4
www.lairdtech.com
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www.lairdtech.com
Fingerstock Board-Level Shields Vent Panels and Filters Form-In-Place Electrically Conductive Elastomers Oriented Wire Microwave Absorbers
Applications • Ideal for high-cycling applications requiring
frequent access
• Ideal in wiping applications when gasket needs
to be engaged from either the top or side
• Wide variety of proles and mounting methods
accommodating applications from small hand-
held devices to room-size enclosures
• All applications that require shielding of
board- level components
• Low height down to 0.04 (1,0)
accommodating mother/daughter board
congurations
• Secure cover design ideal for applications
subject to shock and vibration such as
mobile military vehicles, commercial aircraft,
and wireless electronics
• Provides air ow for component cooling and a barrier to
reduce RF leakage
• Sizes range from small mufn fans on desktops to large
room-size facilities
• Available in commercial and military grade materials
• Ideal for applications with miniature
electrical housings, thin wall
construction, and intricate multi-
components (i.e., cell phones, hand-
held devices, medical instrumentation
and equipment)
• EMI and environmental sealing applications
where at or groove mounting surface re-
quires a complex molded or extruded shape
• Providing both EMI shielding and an
environmental seal on cast or machined
surfaces
• Vulcanized frame congurations can be
used with pre-cast housings, vent panels,
and computer terminal window frames
• Die-cut wall widths as low as 0.090
(2,27) for circular military connectors
and D-sub connectors
• Antenna sidelobe reduction
• Surface current suppression
• Applied directly to the top of high-speed
CPUs, LSIs, and ICs
• Crosstalk suppression
• Improves antenna gain in RFID
applications
• Radar cross-section reduction
Features and Benets
Product Highlights
• Large selection of sizes and shapes
• Wide mechanical operating range
• Superior performance at elevated temperatures
• High shielding effectiveness levels
• Ideal for high-cycle applications
• Good design exibility with either wiping action
or in compression
• For use in a wide variety of slotted and
grounding contact applications
• Custom shapes available
• Provides isolation of board-level
components
• Minimizes crosstalk and susceptibility
without impacting system speed
• Available in tape-and-reel for automated
pick-and-place applications
• ReCovr/ReMovl features available for
convenient component access.
• Available in a wide range of materials and platings
that meet a broad range of shielding effectiveness
requirements
• Varied mounting congurations meeting
environmental space criteria
• Available protective grille for high trafc areas
• Provides cooling of electronic equipment while
maintaining EMI integrity of enclosure
• MaxAir vent panels offer 10-20% additional airow
over frames Al vent panels
• Automated process offers cost savings
on raw material, labor and assembly time
• Small dimension which provide critical
packaging space for board level
components
• Fast prototyping and turn over to mass
production
• Various bead size and cross section
shape available
• Dispense on metal or plastics
• Meets military and commercial standards
• Provides EMI and environmental shielding
• Extruded shapes ideal for extremely narrow
mounting surfaces
• Custom die-cut and molding available
• Wide variety of material compounds for
galvanic compatibility to mounting surfaces
• High corrosion-resistant compounds available
• Provides both EMI and moisture seal
• Available in sponge or solid silicone with
Monel or aluminum wire
• Can be die-cut in complex shapes
• Monel wire bonded into the silicone
provides multiple spring effect with each
contact point resulting in low compres-
sion set
• Higher frequency use than traditional shielding
• Frequency range extended used with other
shielding
• Variety of types for custom solutions
• Easy installation into noisy cavities
with pressure-sensitive adhesive
• EMI and radar cross-section reduction
• Internal EMI and cavity resonance reduction,
used in conjunction with board-level shielding
Electrical Shielding
Effectiveness
Transfer Impedance (500 MHz)
80 - 100 dB — — 85 - 120 dB 40 - 105 dB 60 - 100 dB N/A
H-eld (200 MHz)
Modied Mil 285
60 - 70 dB 48 dB 40 - 70 dB 50 - 70 dB 30 - 75 dB 25 - 60 dB N/A
Plane Wave (2 GHz)
Modied Mil 285
75 - 120 dB 40 - 60 dB 45 - 115 dB 70 - 100 dB 40 - 120 dB 30 - 95 dB N/A
Surface Resistivity N/A N/A N/A N/A N/A N/A N/A
Volume Resistivity N/A N/A N/A 0.002 - 0.03 ohm-cm 0.002 - 5 ohm-cm 0.006 ohm-cm N/A
Mechanical
Available Size Range
Selection of various sizes and congurations
to accommodate gaps from 0.010 - 0.400
(0,25 - 10,2)
Fence and lid: 0.130 - 1.00 (3,3 - 25,4) height
6.000 (152,4) width
One-piece construction: 0.04 - 0.25 (1,0 - 6,4)
height, 0.250 - 0.375 (6,35 - 9,53) width
Thickness: 0.25 - 0.500 (6,35 - 12,7) Height: 0.014 - 0.090 (0,36 - 2,3)
Width: 0.020 - 0.125 (0,5 - 3,1)
Sheet: 0.020 (0,51) - 0.125 (3,17) thick
O-strip: 0.040 (1,02) - 0.250 (6,35) dia.
O-tubing: 0.090 (2,28) O.D. x 0.050 (1,27) I.D.
to 0.4371 (11,10) O.D. x 0.250 (6,35) I.D.
Thickness: 0.032 - 0.250 (0,81 - 6,35) Offered in sheets as a die-cut or kiss-cut
component
Deection Operating Range 20 - 80% deection,
Maximum deection is dependent on the part
prole
N/A N/A 15 - 20% deection Sheet: 10% deection
Solid extrusions: 10 -25% deection
Hollow extrusions: 20 - 50% deection
10 - 20% deection N/A
Compression Force
(based on shape selection)
UltraSoft
®
98 Series: 1.6 Ibs/in. ft.
(2,4 Kg/m) to 41 Ibs/in. ft. (61 Kg/m)
Standard 97 Series: 3.1 Ibs/in. ft.
(4.6 Kg/m) to 118 Ibs/in. ft. (176 Kg/m)
N/A N/A 1.5 Ibs/in. ft. (0,27 Kg/cm) @
0.222 (0,56) height @ 20% deection
Sheet: 75 - 100 PSI (516,7 - 689 kPa) 25 - 100 PSI
(125 - 689 KPa)
N/A
Compression Set None within operating range N/A N/A <20% @ 50% deection 15 - 50% @ 50% deection 2 - 5% @ 50 PSI (344,5 KPa) N/A
Joint Unevenness
Accommodation
0.003 - 0.350 (0,08 - 8,89) maximum N/A N/A 0.002 - 0.006 (0,05 - 0,15) Sheet: 0.005 - 0.010 (0,13 - 0,25)
Tubing: 0.005 - 0.300 (0,13 - 7,6)
0.005 - 0.015 (0,13 - 0,38) N/A
Compound/Material
Availability
Standard material is Beryllium Copper, other
beryllium free variants on request
Tin-plated phosphor bronze, tin-coated steel,
stainless steel, brass, BeCu, and nickel silver;
other materials also available
Gasket material: Monel, tin/copper/steel, BeCu,
metallized fabric-over-foam
Fingerstock frame: aluminum alloy, steel, brass
Honeycomb material: aluminum, steel, brass,
metallized polymeric
Elastomer silicone llers: Ag/Al, Ag/
Cu, Ag/Ni, Ni/graphite
Compounds that meet MIL-G-83528:
Elastomers: silicone, uorosilicone, EPDM
Fillers: Ag, Ag/Cu, Ag/Al, Ag/Ni, Ag/Gl, CAR,
Ni/graphite.
Available in NASA-specied ES75 compounds
for outgassing
Elastomer: solid or sponge silicone
Wire: Monel, aluminum
Microwave absorbing elastomers (Q-Zorb)
are offered in silicone; microwave absorber
foam is urethene-based, open-celled foam
Temperature Range Continuous operation @ 250°F (121°C) Withstands reow and solder temperature N/A -58 - 212°F (-50 - 100°C) -67 to 302°F (-55 to 150°C) 80 - 500°F (26 - 260°C) Q-Zorb: -85 - 350°F (-65 - 175°C)
RF foam: -85 - 250°F (-65 - 120°C)
Available Proles Over 350 standard shapes available, as well
as cut-to lengths and modied standards that
include nger removal, notches, punch holes, etc.
Squares, rectangles, L-shapes, 90° inside
corners, and other custom shapes
N/A “D” shape bead Solid extrusions: rectangular, round ,“D”, and U-channel
Hollow extrusions: square, round, “D”, “P”, modified
standards, cut-to length sheets
Rectangular, strip, at sheets; die-cut
shapes
Q-Zorb thickness: 0.006 - 0.375 (0,15 - 9,53)
RF Foam thickness: 0.125 - 0.250 (3,18 - 6,35)
Mounting Methods Clip-on, Sticky Fingers
®
(pressure-sensitive
adhesive tape), rivet, weld, solder, and slot mount
Surface mount/thru-hole, various pin styles
available
Captive fastener thru-holes Directly applied to mounting surface Groove, pressure-sensitive adhesive, channel
clip- on, mechanical fastening
Groove, pressure-sensitive adhesive Pressure-sensitive adhesive
Custom Shapes Available Custom designs to meet specic applications Flexible fence with at lid, photo etched
at blanks for hand forming, solid can
construction, supplied with dividers to provide
isolation
Available in circular congurations and
custom shapes
Innite variety of patterns and larger
custom bead sizes
Large variation on extruded shapes, complex
die-cuts, and molded parts
Complex die-cut shapes, bonded or
vulcanized
Innite die-cut shapes and molded parts
Environmental
Fluid Seal
None N/A Drip-proof versions available Moisture, rain seal Moisture, rain, jet fuel, and nuclear biological
chemical (NBC) UL compounds
Moisture and rain Moisture, rain, jet fuel, and nuclear
biological chemical (NBC) UL compounds
Air/Dust Limited to twist series with Poron seal N/A 95% open area for minimal pressure drop In limited applications Excellent sealing against air and dust Provides barrier against dust Available in limited applications
Galvanic Compatibility Over 20 plating nishes available to ensure
galvanic compatibility with mating surface
Compatible with all solder materials Gasket materials compatible with wide variety of
plated surfaces
Available in four compounds to provide
galvanic compatibility with most mating
materials
21 standard variations Monel and aluminum wire are compatible
with a broad range of mating surfaces
Moisture, rain, jet fuel, and nuclear
biological chemical (NBC) UL compounds
All dimensions are in inches (millimeters) unless otherwise specied.