EMI Shielding Products
Knitted wire mesh gaskets
description2
knitted wire mesh gasket Process
d
Type of knitted wire mesh gasket Elastomer core mesh gasket
Elastomer core mesh gasket is a product made of single or multiple layers of metal mesh woven around an elastic inner core. The metal mesh has good conductivity and plays a role in shielding EMI/EMP. The inner core material has good compressibility and resilience and plays an environmental sealing role. The optional materials for the metal wire mainly include tin-plated phosphor bronze, tin-plated copper-clad steel and monel; the optional materials for the inner core mainly include polychloroprene rubber, silicone rubber sponge and low-pressure rubber tube.
Performance characteristics
·Wire mesh with different layers can adapt to different structural types and shielding requirements
·Woven metal wire mesh is easy to penetrate the metal surface of the mating surface, and the electrical contact is stable and good
·Good dustproof, moisture-proof and waterproof performance
Application:
Used in military shelters, military cabins, electronic chassis cabinets, cover plates, movable joints and gap filling, etc., to achieve continuous conductive contact and electromagnetic sealing of the equipment shell.
Technical Parameters:
Silk screen material and screen effect
|
Screen Material |
Material Code |
Magnetic field （100kHz） |
Electric field （10MHz） |
Plane Wave （1GHz） |
Plane Wave （10GHz） |
Diameter （mm） |
|
Tin-plated phosphor bronze |
P |
80dB |
130dB |
110dB |
95dB |
0.114 |
|
Tin-plated copper-clad steel |
C |
80dB |
130dB |
105dB |
95dB |
0.114 |
|
Monel |
M |
60dB |
125dB |
90dB |
80dB |
0.114 |
Tin-plated phosphor bronze wire: has the best shielding performance and outstanding performance in electric fields.
·Tin-plated copper-clad steel wire: excellent performance in magnetic fields, but limited corrosion resistance.
·Monel: has good shielding performance and corrosion resistance.
Core material selection and temperature range
|
Core material |
Material Code |
Temp range ℃ |
Core material advantages |
|
EPDM foam rubber |
B |
-40~105 |
Excellent aging resistance, UV resistance and comprehensive performance |
|
Neoprene foam rubber |
L |
-30~100 |
Better oil resistance and flame retardancy |
|
Silicone solid rubber |
S |
-60~260 |
Widest operating temperature range |
|
Silicone foam rubber |
F |
-75~205 |
All metal mesh gasket
All-metal wire mesh gaskets are made of compressible all-metal wires and have a rectangular or circular cross-section. The structure itself is a structure of many spring-like connecting rings, with good conductivity and elasticity. Commonly used metal wire mesh materials include: tin-plated phosphor bronze, tin-plated copper-clad steel and Monel (Monel is a nickel-copper alloy).
Performance characteristics
·Good electrical conductivity and high shielding efficiency
·Various installation methods to meet structural design needs
Application areas
It is widely used at the seams of electronic housings to provide effective EMI shielding.
Technical Parameters:
|
Screen Material |
Material Code |
Magnetic field 100kHz |
Electric field 10MHz |
Plane Wave 1GHz |
Plane Wave 10GHz |
Diameter mm |
|
Tin-plated phosphor bronze |
P |
75dB |
135dB |
105dB |
95dB |
0.114 |
|
Tin-plated copper-clad steel |
C |
80dB |
130dB |
105dB |
95dB |
0.114 |
|
Monel |
M |
60dB |
130dB |
90dB |
80dB |
0.114 |
Beryllium Copper mesh gasket
Beryllium copper round hollow metal wire mesh gasket is woven from beryllium copper wire mesh and has excellent elasticity and flexibility. This wire mesh strip has higher shielding effectiveness than other wire mesh strips and only requires very low compression force during installation. Products with a variety of plating and sizes are available, and common platings include tin plating, nickel plating, etc.
Performance characteristics
· Required pressure is 80% lower than traditional wire mesh padsBeryllium Copper mesh gasket
· Shielding effectiveness is 20dB higher than traditional woven wire mesh
· Weight is 75% lighter than traditional woven pads
Application areas
For shielding and grounding in gaps in chassis and cabinets.
EMI shielding wire mesh tapes
Shielding tape is a single-layer tubular wire mesh braided tape made of highly flexible metal wires such as tinned copper steel wire and nickel-copper alloy wire. By overlapping (at least 1/3 overlap) and wrapping around bare wire bundles or shielded cables with poor shielding performance, it can effectively improve the shielding performance.
Performance characteristics
· Lightweight and flexible
· Reusable and low cost
· Nickel-copper alloy wire: high corrosion resistance, good wear resistance, good conductivity
· Tinned copper-clad steel: has the high strength and toughness of steel, high rigidity
Application areas
Used for cable shielding, chassis grounding and electrostatic discharge. Its flexibility is suitable for irregular surfaces and can be used in a wide range of temperatures and environments. When used as cable bundle shielding, it can solve the problem of cable bundle shielding well, and is not affected by cable bending. It is widely used in military electronic system chassis and cabinet cable wiring.
Technical Parameters
|
Material |
Material Code |
Magnetic field 100kHz |
Electric field 10MHz |
Plane Wave 1GHz |
Plane Wave 10GHz |
Diameter mm |
|
Tin-plated copper-clad steel |
C |
45dB |
60dB |
40dB |
30dB |
0.114±0.012 |
|
Nickel-copper alloy wire |
N |
45dB |
60dB |
35dB |
30dB |
0.114±0.012 |
Shielding braid
Shielding braided sleeves are woven with bare copper wire, tinned soft copper wire and other metal wires. They are often used to wrap around the outer surface of wires and cables to prevent external interference signals from entering the inner conductor, while also reducing the signal loss during transmission.
Performance characteristics
·Easy to use and flexible, excellent mechanical flexibility
·Good electrical conductivity
·Flame retardant of UL 224 VW-1
·The mesh shape has good heat dissipation
Application areas
Mainly used for radiation protection of special facilities such as special cable circuits and computer rooms, anti-electromagnetic interference of electronic equipment, aerospace, and military facilities, etc.
Technical Parameters
Screen material
|
Screen material |
Code |
Performance |
|
Bare copper wire |
C |
Good conductivity, flexibility and heat dissipation |
|
Tinned copper wire |
T |
Good anti-oxidation and corrosion resistance |
If you need customized products and professional services, don't hesitate, please contact us immediately!