performance for customers where EMI issues occur. The 51G Series EMI gaskets are composed of
electrically conductive fabric wrapped around a soft urethane foam core. They are supplied with
either a conductive or non-conductive pressure sensitive adhesive (PSA), and can be equipped with
an Extended Release Liner (ERL) on the adhesive. The 51G is a halogen-free, UL 94V0 rated product
that can be created with cross-section profiles such as rectangle, D, C, P, T, knife, bell shapes, and
others. The 51G EMI gaskets can be further customized to an application by die-cutting,
hole punching, notching, etc.
FEATURES
• Fabric-over-Foam gaskets are RoHS compliant
• Halogen-free per IEC-61249-2-21 standard
• UL 94V0
• ow surface resistivity of < 0.07 Ω /
□
L
provides excellent conductivity
• hielding effectiveness of >100 dB across a
S
wide spectrum of frequencies
• xtremely low compression forces allow for
E
use of lighter materials
• abric is highly conductive to provide good
F
EMI shielding and grounding
• brasion resistant metallized fabrics
A
show virtually no degradation in electrical
performance after 1,000,000 cycles
• aird Technologies’ proprietary coating
L
prevents fabric fraying and fingerprinting
• vailable with conductive or
A
non-conductive PSA
• any cross-section profiles available such as
M
rectangle, D, C, P, T, knife, bell and more
• rofile gaskets can be cut to specified lengths,
P
kiss-cut on release liner, or mitered to form
frame configurations
MARKETS
• Cabinet applications
• LCD and Plasma TV
• Medical equipment
• Servers
• Printers
• Laptop computers
• Networking equipment
• Desktop computers
• Telecommunications cabinets
FORCE/DISPLACEMENT/RESISTANCE (FDR)
0.5
Resistance (ohms/inch length)
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
0%
8
7
Force (lbs/inch length)
6
5
4
3
2
1
0
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
% Compression
SHIELDING EFFECTIVENESS (dB)
140
Effectiveness (dB)
120
100
80
60
40
global
solutions:
local
support
USA: +1.866.928.8181
Europe: +49.0.8031.2460.0
Asia: +86.755.2714.1166
20
TM
0
1.00E+04
1.00E+05
1.00E+06
1.00E+07
1.00E+08
1.00E+09
Frequency Hz
www.lairdtech.com
51G EMI Gaskets
Fabric-over-Foam
Innovative
Technology
for a
Connected
World
Item
Shielding Effectiveness
at 100 MHz
at 1 GHz
Surface Resistivity
Compression Set
Operation Temperature
Flame Retardant
Hazardous Substance
Unit
Value
109
Test Method
SAE-ARP-1705(Mod.)
(W10 mm x H8 mm)
ASTM F390
ASTM D3574
-
dB
Ω
/
□
%
°C
UL 94V0 (UL file No.E170327)
113
< 0.07
< 20
-40 ~ 70
Compliant with RoHS (Directive 2011/65/EU)
Compliant with SONY ss-00259
Halogen-free (based on IEC-61249-2-21)
Antimony-free
Shelf Life
12 months at 23°C/ 60% R.H.
COMPOSITION OF PRODUCT
W
Conductive fabric
H
Polyurethane foam
PSA tape (option)
PRESSURE SENSITIVE ADHESIVE (PSA TAPE) OPTIONS
Name
LT-301
LT-350
Type
Conductive PSA
PSA
Thickness (mm)
0.09
0.12
Peel strength on stainless steel
(JIS Z 0237)
> 1.3 kgf/25 mm
> 2 kgf/25 mm
Z-axis Resistance
< 0.05
Ω
-
*Other PSA can be provided. Contact Laird Technologies engineering.
ORDERING INFORMATION
PART NUMBER EXAMPLE
Digits:
1
4
2
2
3
1
4
6
5
A
6
A
-
7
5
8
1
Product
Name
9
G
-
10
0
11
1
12
4
13
0
14
0
Profile S hape & Details
Part L ength
EMI-DS-FOF-51G 0712
Any information furnished by Laird Technologies, Inc. and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and application of
Laird Technologies materials rests with the end user. Laird Technologies makes no warranties as to the fitness, merchantability, suitability or non-infringement of any Laird Technologies materials or products for
any specific or general uses. Laird Technologies shall not be liable for incidental or consequential damages of any kind. All Laird Technologies products are sold pursuant to the Laird Technologies’ Terms and
Logo, and other marks are trade marks or registered trade marks of Laird Technologies, Inc. or an affiliate company thereof. Other product or service names may be the property of third parties. Nothing herein
provides a license under any Laird Technologies or any third party intellectual property rights.
功能说明 NS4258 是一款全差分输入，超低噪声，防失真，无需滤波器，5W×2 双声道 AB 类 D 类切换音频功放。NS4258 采用全差分输入设计，使得功放有较好的共模噪声抑制特性。NS4258 采用先进的技术，在全带宽范围内极大地提高信噪比，最大限度地降低了底噪声。独特的防失真(NCN)功能可以有效防止输入信号过载导致的输出信号失真，实现更加舒适的听觉感受。同时可以有效保护在大功率输出时...[详细]
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