Datasheet

56
www.lairdtech.com
57
www.lairdtech.com
EMI ESSENTIALSEMI ESSENTIALS
FABRIC-OVER-FOAM
I/O GASKET SELECTION GUIDE
DIGITS 1 THROUGH 4
Designate profile number. Select profile or I/O and sizes from pages 58-61 (Profile) or 62-64 (I/O).
DIGITS 5 THROUGH 6
Designate part-specific attributes of the product including cutouts, notches, tape and a variety
of other customized details. PA STD PSA / PB STD PSA W/ ERL / PC STD CPSA
DIGITS 7 THROUGH 9
Designate the core materials, flame rating and fabric cover combinations. Select these options
from the recommended list in the table below.
DIGITS 10 THROUGH 14
Designate the part length in inches to two decimal places. For the example shown above,
the “01200” denotes a 12.00 inch (304,8 mm) long gasket).
* Certain combinations of materials may not be available for all Profiles or I/Os.
Please consult the Engineering Department at Laird when unsure.
See back cover for contact information.
Part Number Example:
Digits: 1 2 3 4 5 6 7 8 9 10 11 12 13 14
4 6 9 3 - PA - 5 1 H - 0 1 2 0 0
Prole
Shape
& Size
Attachment
& Part
Specic
Details
Core Materials
5 = Soft Urethane
R = High Temp
T = Low Compression
Set / Force
0 = No Foam
H = Sculpted Foam /
'C' Shapes
Flame Rating
0 = Not Rated
1 = UL V0
Fabric Cover
8, K, B = Ni/Cu Ripstop
Y, 6 = Ni/Cu Knit Mesh
H = Ni/Cu Taffeta
L = Black Ni/Cu Taffeta
Part Length
Fabric
Non-Rated
RoHS Compliant
UL94-VO Rated
RoHS Compliant
UL94-VO Rated
RoHS Compliant
Halogen-Free EcoGreen
TM
Typical Apps Shielding
Ni/Cu Mesh 506 51N Compros Only Medium
Ni/Cu Taffeta 501 51H Comp/Shear High
Ni/Cu NRS 50B 51G Comp/Shear High
Ni/Cu NRS H1K C-Fold Only High
Sn/Cu NRS 51S
Comp/Shear
Harsh Environment
High
Ni/Cu NRS T1G Low Compression Set / Force High
Ni/Cu NRS R1G 85°C Applications High
Ni/Cu Black Taffeta 51L Visible Applications High
All parts listed in this catalog are lead free and RoHS compliant.
ENVIRONMENT & SAFETY
• Halogen-free and RoHS compliant;
per the IEC 61249-2-21 standard
• UL94 V0
PERFORMANCE AND BENEFITS
• Proles and I/O gaskets are available with a pressure
sensitive adhesive (PSA) tape
• Proles can be cut to specied lengths, kiss-cut
release liner or mitered to form frame congurations
HIGH SHIELDING EFFECTIVENESS
• Shielding effectiveness of > 100 dB
• Extremely low compression forces allow
lighter weight materials, with less fastening
and hinge hardware.
• Low surface resistivity as low as <0.07 ohms/square
provides improved conductivity (ASTM F390)
• Service temperature range from - 40°F to 158°F
(- 40°C to 70°C)
Fabric Type Metal Coating Conductivity Application Benets
Ripstop Ni/Cu <0.07 ohms/square I/O or Prole Gaskets Flame retardant, high abrasion resistance
Taffeta Ni/Cu <0.07 ohms/square I/O or Prole Gaskets Flame retardant, abrasion resistant
Knit Mesh Ni/Cu <0.10 ohms/square I/O or Prole Gaskets Low cost, ame retardant
Black Taffeta Ni/Cu <0.07 ohms/square I/O or Prole Gaskets Black UL94V0, similar properties to Taffeta fabric
High Performance Taffeta Ni/Cu <0.05 ohms/square I/O or Prole Gaskets EMI tape, highest shielding effectiveness
Fabric
Foam Type Compression Set (ASTM D 3574) Color Application Benets
Urethane (Polyester) 5-10% Charcoal I/O or Prole Gaskets Simple, moderate shapes, low compression force/compression set, ame retardant
Foam
Pressure Sensitive Adhesive Thickness Benets
Acrylic Non-conductive 0.005" High Peel Strength, Temperature Resistant
Acrylic Conductive 0.004" Electrically Conductive in Z-Axis Direction
Pressure Sensitive Adhesive
ECOGREEN
TM
ENVIRONMENTALLY FRIENDLY
FABRIC-OVER-FOAM SHIELDING GASKETS
Force/Displacement/Resistance Graph of 4211 Prole
% Compression
Resistance (ohms/inch length)
0.10
0.08
0.06
0.00
0.04
0.02
Force (lbs/inch length)
5
1
2
3
4
0
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
51G
51H
51N
FIGURE 1
Laird is pleased to introduce the next generation in RoHS-compliant EMI shielding technology.
While Laird Fabric-Over-Foam EMI gaskets are RoHS compliant, we are proactively strengthening our compliancy by engineering
halogen-free EcoGreen
TM
shields.
Not only are the patented EcoGreen
TM
shields environmentally friendly, they offer high EMI shielding effectiveness, extremely low
compression forces, abrasion-resistant metallized fabrics, large service temperature ranges, and multiple prole/gasket options.
Laird shields are ame retardant and pass the stringent UL94-VO burn test and the whole gasket is Halogen-free.
APPLICATIONS
• Computer servers
• Desktop computers
• Digital cameras
• Internal/external hard drives
• Liquid Crystal Displays (LCDs)
• Medical equipment
• Notebook computers
• Plasma Display Panels (PDPs)
• Printers
• Set-top boxes
• Telecommunications enclosure cabinets
AGENCY APPROVALS
• UL designation V0 041
• UL file #OCDT2.E170327
• More information is available at ul.com