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508SN Datasheet(PDF) 5 Page - 3M Electronics

Part # 508SN
Description  3M??EMI/EMC Electronic Materials
Download  12 Pages
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Manufacturer  3M [3M Electronics]
Direct Link  http://www.3m.com
Logo 3M - 3M Electronics

508SN Datasheet(HTML) 5 Page - 3M Electronics

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background image
3
Metal
Antenna tag
Antenna tag
Eddy current
generation
(Magnetic flux
attenuation)
3M FFDM
Magnetic Flux
Metal
Improve NFC/RFID Antenna Read Range with
3M Flux Field Directional Materials (FFDM)
Improve Power Transfer Efficiency and Range
with 3M Flux Field Directional Materials (FFDM)
3MFlux Field Directional Materials for NFC/RFID and Wireless Power Applications
Transmit and
Read Source
Antenna
3M Solution: Thin / high permeability, low signal loss
FFDM (Optimized to 13.56MHz)
3M Flux Field Directional Materials EM80KM and RFIC30 improve
EM energy transfer via inductive coupling (short range) or magnetic
coupled resonance (longer range)
3M Flux Field Directional Materials EM16TF and RFIC15 reduce
eddy current losses and improve read range
3M Solution: High permeability, low energy loss FFDM
at operating frequencies
3M Flux Field
Directional
Materials
Receiving Antenna Coil
Sending Antenna Coil
3M FFDM
3M FFDM Battery/Metal
B
z
3MFlux Field Directional Materials (FFDM) for Magnetic Shielding Applications
3M FFDMs can be used to provide magnetic shielding of stray field
generating devices or materials that impact neighbor device or
component performance (i.e. inductor, wireless power, etc.).
Antenna
Metal/Battery
Antenna on polyimide
carrier. EM field along
Y-Axis in free space
Antenna with 3M FFDM between the antenna
and metal/battery parts. EM field strength
increased significantly with 3M FFDM use.
Antenna near metal or battery surface.
EM field significantly reduced due to eddy current
losses of EM field into the battery/metal parts.
Side view of antenna with
3M FFDM between antenna
and metal/battery surface.
3M FFDM
Antenna
3M FFDM
Metal/
Battery
25
20
15
10
5
0.1
1
10
Frequency (MHz)
100
Vertical to Mag Field
Parallel to Mag Field
H-Field of Device
No Magnetic Shielding
H-Field of Device
FFDM Magnetic Shielding
Strong
Mag. Field
Component
near Strong
H-Field
Component
near Weak
H-Field
3M FFDM
Sheet
Material
Strong
Mag. Field
Weak
Mag. Field
3M FFDM Type EM80KM
0.02 mm Soft Magnetic Layer Thickness
KEC Magnetic Field Test Method
80 mm x 80 mm sample/40 mm plate s hole size
140
120
100
80
60
40
20
0
10M
100M
Frequency (Hz)
AB5016RF


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