With the demand for faster speeds in more compact products, engineers have come to face new and more EMI (Electromagnetic Interference) related problems. Excessive EMI will not only decrease the performance of components but can also possibly emit harmful waves.
To ensure quality control the FCC and other government agencies have imposed more EMC requirements to pass for those designing products. As a result EMI solutions have become more critical than ever.
KITAGAWA INDUSTRIES America’s EMI absorber materials can be life-saving solutions that can be applied when there is no time to do major redesigning of the board layout. These non-conductive materials that consist of metallic particles, ferrite material, and silicone gather magnetic field and convert EMI noise into negligible heat energy. They work effectively at various frequency ranges from the KHz and MHz range up to the higher GHz range. With non-conductive adhesive on one side, they can be easily applied directly over ICs, CPUs, graphic chips, and even cables without fear of short-circuiting. These flexible sheets come in a variety of different thicknesses to fit any application’s space restrictions.
- Easy to installation. …etc from presentation materials
- Applications: Smart phones, Cell phones, Tablet PCs, Laptops, ultra-thin type laptops
- RoHS Compliant
These absorber sheets can also serve other uses. Coupling and cross talk are major problems in applications where many components have to share extremely limited space. Adding EMI absorbers can reduce these two problems while also adhering to space restrictions. Absorber sheets have also been used to increase the performance in RFID applications by correcting the magnetic field loop for RFID reader malfunctions at 13.56 MHz. This material gathers magnetic field to gain more signals in order to eliminate the need for wires. They come in a variety of types depending on the attenuation needed and application including those devices with near field communication (NFC) technology. Please feel free to explore the tabs below for all variations.
EMI Absorber Sheets (Broadband type)
Broadband absorber types cover a wide range of frequencies from the lower couple hundred MHz toward 10 GHz.
EMI absorber sheets covering the MHz and the GHz range below 10 GHz.
MG Absorber Sheet: MG-03A Series – For High Temperature
Heat Resistant Absorber Sheet for Use in High Temperature Environment (Up to 150°C)
*Other options are available such as absorbers with conductive surface layers. Please consult sales for more information.
Soft ferrite with epoxy base standard EMI absorber covers the low MHz range. It also works for RFID at 13.56MHz.
MAB Absorber Sheet – MAB-03 Series
Flexible sheet consists of resin with soft ferrite filler
EMI Absorber Sheets (Narrow Band type)
Narrow band types absorbers (also known as Pinpoint types, microwave absorbers) attenuate 10-20 dB at one particular frequency. These are mainly designed for UHF (300MHz ~ 3GHz range) and SHF (3~30GHz) frequency range.
Narrowband EMI Absorbers: NSSR Series
NSSR Grade Electromagnetic Wave Absorber
Dual Functioning EMC and Thermal Management
This type contains both EMC and thermal management functions. It works to reduce EMI noise as well as act as a thermal interface material (TIM) between the heat sink and the heat source. Attenuation is achieved in the same area where heat also needs to be regulated. This unique type can save space, cost, and time.
EMI Absorber & Thermal Pad – EMPV4 Series NEW!
Silcone-free thermal interface material with EMI noise suppression. No siloxane outgassing concerns. Compliable material (ASKER C 40) that conforms to uneven surfaces.
Thermal Pad and Vibration Dampener – CPAG Series NEW!
Silicone-Free, heat-conductive vibration damping sheet. Dual function thermal conductive and vibration damping material.
Change Gel Thermal Pad + EMC Dual Function CGE Series
Thin + Dual functional sheet for EMC and thermal management. Phase Change at 50degreesC to secure close contact with heating elements.
RFID types are specifically designed for RFID applications’ malfunction. These applications require as large amount of magnetic field (u’) to be gathered at 13.56 MHz and other frequencies to enhance the performance of the read range to pick up signals. These absorbers are made with ferrite material that has been specifically designed with low levels of conversion (u”).
Flexible Ferrite Sheet: FFSX-H Series UPDATED!
EMI Flexible Noise Suppression Ferrite Sheet
EMI Absorbers Sheet – MAB
EMI Flexible Noise Suppression Ferrite Sheet
RFID/NFC Absorber: IMRFS Series
High permeability absorber, engineered for both RFID range Improvement and EMI noise reduction.
*Other ferrite material for other frequencies is available upon request.
Ferrite Sheet For Wireless Charging
Ferrite Sheet For Wireless Charging FFSW/SDK15 Series NEW!
Very thin and flexible ferrite tile, ideal for low frequency wireless charging. Designed specifically for wireless charging applications. Magnetic permeability is 1800 at 10kHz