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SMT EMI Gasket and Grounding Contact

  • SMT-EMI-Gasket-and-Grounding-Contact-SMF01
  • SMT-EMI-Gasket-and-Grounding-Contact-SMF02
  • SMT-EMI-Gasket-and-Grounding-Contact-SMF03

Overview

  • SMT EMI Gasket and Grounding Contact is a PCB grounding component that attenuates electromagnetic noise generated inside electronic devices and protects the circuit from electrical surges.
     - SMF01 Series: Composed of PU sponge and metal plated PI film. Due to its softness, no stress to the PCB, and it is suitable for medium and large-sized devices.
     - SMF03 Series: Made of heat-resistant material, it can be used up to 125°C, and is mainly used for automotive electronic parts.
  • Excellent electrical conductivity, stable and low electrical resistance due to wide contact area.
  • No stress on the device due to its softness and less surface friction.
  • Packaged in an embossed carrier tape for automatic mounting (SMT).
  • Why grounding in electronic devices

Features


SMT EMI Gasket and Grounding Contact product family

SMF01 Series

SMT EMI Gasket and Grounding Contact - SMF01
  • Soft and elastic with a stable cube structure and sponge core.
  • Larger manufacturable size (medium/large-sized gasket) than silicone gasket or metal fingerstock gasket.
  • Soft sponge material does not bend the PCB nor deform the device.


SMF02 Series

SMT EMI Gasket and Grounding Contact - SMF02
  • Ultra-small sized SMT EMI Gasket
  • Improved corrosion resistance and reliability by not exposing the copper layer on the side of the product.
  • Adjustable hollow shape/quantity and elastomer thickness.
  • Versatile shapes are available.


SMF03 Series

SMT EMI Gasket and Grounding Contact - SMF03
  • Enhanced heat resistance from SMF01 (Same appearance as SMF01 series.)
  • Operation at up to 125℃.
  • Mainly used for automotive electronic parts.


Major properties of SMF01/02/03 Series

SMF01 SMF02 SMF03
Recommended size 3.0~25.0mm thick 0.5~3.0mm thick 3.0~25.0mm thick
Outer layer Conductive PI film Conductive metal layer Heat-resistant conductive PI film
Core Heat-resistant PU sponge Silicone rubber Heat-resistant PU sponge
Operating temperature -40~+105℃ -40~+125℃ -40~+125℃
Z-axis resistance < 0.1Ω < 0.1Ω < 0.1Ω
Compression recovery rate > 90% > 90% > 90%
Features - Soft material used
- Suitable for home appliance
- Ultra-small sized gasket
- Suitable for small devices like mobile
- Heat-resistant material used
- Suitable for automotive components

Details


Common properties of SMF01/02/03

Properties Unit Typical Value Remarks
Z-axis resistance Before mount < 0.1Ω ESQ-612-02
After mount < 0.1Ω ESQ-612-02
Compression recovery rate % > 90% ESQ-612-26
Recommended compression rate % 20% ESQ-612-27
Solder adhesion strength gf > 500 ESQ-612-36
Reflow temperature 230~260 Peak : Max. 10 sec.
Operating temperature -40~+105/+125 SMF01: Max. +105℃
SMF02/03: Max. +125℃
Flame retardancy UL94 V-0
* Handling guide of SMT EMI Gasket & Grounding Contact


Compression-resistance graph


  • SMT EMI Gasket and Grounding Contact SMF01 series compression-resistance graph
    < SMF01 Series >
    W5.0*T5.0*L3.0mm
  • SMT EMI Gasket and Grounding Contact SMF02 series compression-resistance graph
    < SMF02 Series >
    W3.0*T2.5*L2.0mm


Product structure


SMT EMI Gasket and Grounding Contact structure
SMF01 / SMF03
Material Surface Conductive PI film
Core PU sponge
Size
(mm)
- W T(X) L
Max. 12.0 20.0 ~
Min. 3.0 1.5 2.5


Applications


PCB Ground & EMI Shielding

  • Closeup of SMT EMI shielding gasket
  • Several SMT EMI shielding gasket mounted on PCB
  • Surface mounting of SMT EMI shielding gasket
  • SMT Gasket is used for EMI shielding and grounding by attaching it to the PCB of the LCD module. Several pieces of SMT Gasket are used on PCB to maximize EMI shielding and grounding effectiveness. Their positions on PCB are reflected in the PCB circuit design phase.
  • Provided in reel typed career packages suitable for SMT.


Touch Sensor Gasket / Touch Switch Gasket

Touch sensor gasket, Touch switch gasket, Touch switch
Other types of touch sensor gasket & touch switch gasket

  • The touch sensor gasket (touch switch gasket) functions as an electrode connecting the display panel and PCB using the electrostatic touch input method. It is suitable for touch switches of home appliances and industrial devices.
  • SMT EMI gasket is installed with automatic surface mounting, while the current spring contact and touch rod method require manual soldering.
  • Economic if it replaces an expensive touch grid method.
  • Gaskets do not stress PCB/Panel due to their elasticity and have high corrosion resistance.


Product Support


Part Number

SMT EMI Gasket Part Numbering
# Code Explanation
(1) Product code SMF (Surface Mount)
(2) Series 01: Sponge, 02: Silicone, 03: Heat-resistant
(3),(4),(5) W, T, L 050: 5.0mm, 030: 3.0mm, 040: 4.0mm
SMT EMI Gasket Packaging