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RFI and EMI - Contacts, Fingerstock and Gaskets

Category Introduction

Fingerstock and gasket contacts limit electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, that affect electrical circuits by electromagnetic induction, electrostatic coupling, or conduction. They are used where removable parts or doors attach to a chassis or enclosure, making them susceptible to EMI. Contacts are attached using adhesive, clips, hardware, solder, slotting or snap-in channels.

Product List

4822 Items
PDF Mfr Part # Quantity
Available		 UnitPrice RFQ Series Packaging Product StatusTypeShapeWidthLengthHeightMaterialPlatingPlating - ThicknessAttachment MethodOperating Temperature
2306334-3
2306334-3
SPRING FINGER 1.2H
TE Connectivity AMP Connectors
 2,962 $0.17
Tape & Reel (TR) ActiveShield Finger-0.039" (1.00mm)0.079" (2.00mm)0.047" (1.20mm)Copper AlloyGold3.9µin (0.10µm)Solder-40°C ~ 85°C
S0951-46R
S0951-46R
RFI SHIELD CLIP MINI TIN SMD
Harwin Inc.
 1,640 $0.36
Tape & Reel (TR) ActiveShield Clip-0.043" (1.10mm)0.154" (3.90mm)0.050" (1.28mm)Stainless SteelTin118.11µin (3.00µm)Solder-40°C ~ 85°C
2336713-2
2336713-2
SPRING FINGER 1.45H
TE Connectivity AMP Connectors
 2,950 $0.23
Tape & Reel (TR) ActiveShield Finger-0.039" (1.00mm)0.067" (1.70mm)0.057" (1.45mm)Stainless SteelGold9.843µin (0.25µm)Solder-40°C ~ 85°C
2199248-6
2199248-6
SHIELD FINGER, LOOSE PIECE, TYPE
TE Connectivity AMP Connectors
 2,620 $0.22
Tape & Reel (TR) ActiveShield Finger, Pre-Loaded-0.094" (2.40mm)0.154" (3.90mm)0.063" (1.60mm)Stainless SteelGold19.685µin (0.50µm)Solder-
S0991-46R
S0991-46R
RFI SHIELD CLIP MICRO TIN SMD
Harwin Inc.
 1,686 $0.50
Tape & Reel (TR) ActiveShield Clip-0.035" (0.90mm)0.256" (6.50mm)0.054" (1.37mm)Stainless SteelTin118.11µin (3.00µm)Solder-25°C ~ 150°C
S7121-42R
S7121-42R
RFI SHIELD FINGER AU 1.7MM SMD
Harwin Inc.
 1,641 $0.50
EZ BoardWare Tape & Reel (TR) ActiveShield Finger-0.059" (1.50mm)0.106" (2.70mm)0.067" (1.70mm)Copper AlloyGoldFlashSolder-55°C ~ 125°C
1551572-5
1551572-5
PRE-LOADED SPRING FINGER 1.8MM
TE Connectivity AMP Connectors
 2,912 $0.34
Tape & Reel (TR) ActiveShield Finger, Pre-Loaded-0.045" (1.15mm)0.128" (3.26mm)0.071" (1.80mm)Stainless SteelGold19.69µin (0.50µm)Solder-
TC-01-MINI
TC-01-MINI
MINI TECH CLIP
Leader Tech Inc.
 1,094 $0.39
Tape & Reel (TR) ActiveShield Clip-0.035" (0.90mm)0.264" (6.70mm)0.051" (1.29mm)Phosphor BronzeTin-Solder-
TC-01
TC-01
SMS,TECH CLIP--PCB--SHIELD COVER
Leader Tech Inc.
 479 $0.38
Tape & Reel (TR) ActiveShield Clip-0.090" (2.28mm)0.310" (7.87mm)0.137" (3.48mm)Phosphor BronzeTin-Solder-
2286211-3
2286211-3
HIGH CURRENT SPRING FINGER
TE Connectivity AMP Connectors
 3,202 $0.22
Tape & Reel (TR) ActiveShield Finger, Pre-Loaded-0.067" (1.70mm)0.157" (4.00mm)0.094" (2.40mm)Copper AlloyGold19.685µin (0.50µm)Solder-
S7271-45R
S7271-45R
RFI SHIELD FINGER AU 2MM SMD
Harwin Inc.
 1,601 $0.43
EZ BoardWare Tape & Reel (TR) ActiveShield Finger, Pre-Loaded-0.059" (1.50mm)0.138" (3.50mm)0.079" (2.00mm)Copper AlloyGoldFlashSolder-40°C ~ 85°C
S1001-46R
S1001-46R
RFI SHIELD CLIP MICRO TIN SMD
Harwin Inc.
 81 $0.46
Tape & Reel (TR) ActiveShield Clip-0.024" (0.60mm)0.177" (4.50mm)0.035" (0.90mm)Stainless SteelTin118.11µin (3.00µm)Solder-25°C ~ 150°C
2040852-1
2040852-1
SHIELD FINGER 0820 N-B WITH SE
TE Connectivity AMP Connectors
 835 $0.42
Tape & Reel (TR) ActiveShield Finger-0.079" (2.00mm)0.134" (3.40mm)0.031" (0.80mm)Copper AlloyGoldFlashSolder-
S0971-46R
S0971-46R
RFI SHIELD CLIP MINI TIN SMD
Harwin Inc.
 983 $0.49
Tape & Reel (TR) ActiveShield Clip-0.043" (1.10mm)0.233" (5.92mm)0.083" (2.10mm)Stainless SteelTin118.11µin (3.00µm)Solder-40°C ~ 85°C
S7171-45R
S7171-45R
RFI SHIELD FINGER AU 4MM SMD
Harwin Inc.
 2,081 $0.43
EZ BoardWare Tape & Reel (TR) ActiveShield Finger-0.091" (2.30mm)0.181" (4.60mm)0.157" (4.00mm)Phosphor BronzeGoldFlashSolder-20°C ~ 70°C
1551575-5
1551575-5
PRE-LOADED SPRING FINGER 3MM
TE Connectivity AMP Connectors
 146 $0.40
Tape & Reel (TR) ActiveShield Finger, Pre-Loaded-0.045" (1.15mm)0.128" (3.26mm)0.118" (3.00mm)Stainless SteelGold11.81µin (0.30µm)Solder-
120220-0202
120220-0202
UNIVERSAL CONTACT 1.8MM SMD
ITT Cannon, LLC
 2,103 $0.40
Tape & Reel (TR) ActiveShield Finger, Pre-Loaded-0.035" (0.90mm)0.132" (3.35mm)0.071" (1.80mm)Beryllium CopperNickel118.11µin (3.00µm)Solder-
120220-0161
120220-0161
UNIVERSAL CONTACT 2.5MM SMD
ITT Cannon, LLC
 2,071 $0.40
Tape & Reel (TR) ActiveShield Finger, Pre-Loaded-0.043" (1.10mm)0.192" (4.87mm)0.098" (2.50mm)Beryllium CopperGold5.906µin (0.15µm)Solder-
S1711-46R
S1711-46R
RFI SHIELD CLIP TIN SMD
Harwin Inc.
 800 $0.45
EZ BoardWare Tape & Reel (TR) ActiveShield Clip-0.090" (2.28mm)0.346" (8.79mm)0.140" (3.55mm)Stainless SteelTin118.11µin (3.00µm)Solder-40°C ~ 125°C
S0981-46R
S0981-46R
RFI SHIELD CLIP R/A TIN SMD
Harwin Inc.
 658 $0.52
Tape & Reel (TR) ActiveShield Clip-0.031" (0.80mm)0.185" (4.70mm)0.055" (1.40mm)Stainless SteelTin118.11µin (3.00µm)Solder-25°C ~ 150°C

About RFI and EMI - Contacts, Fingerstock and Gaskets

What are RFI and EMI - Contacts, Fingerstock and Gaskets?

RFI and EMI - Contacts, Fingerstock and Gaskets

RFI (Radio Frequency Interference) and EMI (Electromagnetic Interference) - Contacts, Fingerstock, and Gaskets are essential components in the electromagnetic shielding domain. These components are designed to prevent unwanted electromagnetic waves from interfering with electronic devices, ensuring their optimal performance. They work by providing a conductive path that diverts electromagnetic interference away from sensitive components, effectively sealing gaps and seams in electronic enclosures. The basic operating principle involves creating a conductive barrier that absorbs or reflects electromagnetic waves, thus maintaining the integrity of electronic systems.

Types of RFI and EMI - Contacts, Fingerstock and Gaskets

Contacts

Contacts are typically used to establish a reliable electrical connection between two conductive surfaces. They are often made from materials like beryllium copper or stainless steel, which offer excellent conductivity and durability. Contacts are ideal for applications requiring frequent mating and demating, such as in connectors and switches.

Fingerstock

Fingerstock is a type of EMI shielding gasket made from thin metal strips that are formed into a series of fingers. These fingers provide excellent flexibility and resilience, making them suitable for applications where repeated opening and closing of enclosures occur. Fingerstock is commonly used in doors, panels, and other access points where a continuous conductive path is necessary.

Gaskets

EMI gaskets are designed to fill gaps and seams in electronic enclosures, providing a continuous conductive path to block electromagnetic interference. They are made from conductive elastomers, foams, or fabric-over-foam materials, offering a balance of flexibility, conductivity, and environmental sealing. Gaskets are used in applications where environmental sealing is as crucial as EMI shielding, such as in outdoor equipment.

How to choose RFI and EMI - Contacts, Fingerstock and Gaskets?

When selecting RFI and EMI shielding components, several key parameters should be considered:

  • Material: Choose materials that offer the required conductivity, corrosion resistance, and mechanical properties for your application.
  • Compression Force: Ensure the component can maintain effective contact under the expected mechanical loads.
  • Environmental Conditions: Consider factors such as temperature, humidity, and exposure to chemicals when selecting materials.
  • Frequency Range: Verify that the component can effectively shield against the specific frequency range of concern.

Evaluating product quality and reliability involves reviewing supplier certifications, testing data, and customer reviews. Additionally, consider the ease of installation and compatibility with existing systems to ensure seamless integration.

Applications of RFI and EMI - Contacts, Fingerstock and Gaskets

Telecommunications

In the telecommunications industry, these components are used to shield sensitive equipment from external electromagnetic interference, ensuring clear signal transmission and reception. They are commonly found in base stations, routers, and other communication devices.

Automotive

Automotive applications require EMI shielding to protect electronic control units (ECUs) and infotainment systems from interference, ensuring reliable vehicle operation. Contacts, fingerstock, and gaskets are used in various parts of the vehicle to maintain electromagnetic compatibility.

Aerospace

In aerospace, EMI shielding is critical for maintaining the functionality of navigation and communication systems. These components are used in aircraft and spacecraft to protect against interference from both internal and external sources.

Medical Devices

Medical devices rely on precise electronic signals for accurate diagnostics and treatment. EMI shielding components are used to prevent interference that could compromise device performance, ensuring patient safety and device reliability.

Consumer Electronics

In consumer electronics, such as smartphones and laptops, EMI shielding is essential to prevent interference that could affect device performance. Contacts, fingerstock, and gaskets are used to shield internal components and maintain device functionality.