3M™ Flux Field Directional Material (FFDM) EM25TP

It should be noted that once a maximum performance level is established for the end use device using the 3M FFDM

EM25TP as an EMI absorber, the overall design can be reviewed to understand if other, non-FFDM changes not initially

considered, but now possible with the new performance level associated with using the 3M FFDM materials could be

considered. An example would be the absorber reducing EMI noise levels to allow for improved antenna Signal to Noise

(SNR) ratio that could allow for higher data transfer speeds and/or longer range performance.

Effectiveness

3M™ Flux Field Directional Materials EM25TP performance and effectiveness is based on several application

considerations:

1) Permeability (u’) and Loss (u”) of this material at the frequency range or frequency peak of the intended

application can affect the performance. Permeability and Loss of the 3M FFDM EM25TP varies with frequency

and is a measure of how well the EM material may couple with the EM field and impact performance.

2) Thickness of the 3M FFDM EM25TP product can be used to optimize an applications performance.

3) End use application orientation and location affects the 3M EM products interaction with an EM field.

Typical Physical Properties and Performance Characteristics

Note: The following technical information and data should be considered representative or typical only and should not be used for

specification purposes. Final product specifications and testing methods will be outlined in the products Certificate of Analysis

(COA) that is provided once the product is approved by 3M for general commercialization and development work is completed.

*Permeability and noted results of Vibrating Sample Magnetometers (VSMs) can vary with test method and/or

equipment used for testing at different test sites

** Based on general environmental performance characteristics of the polymer binder resin type. Each application

should verify temperature and environmental performance in the end-use specific configuration.

*** ASTM D257 Type Test Method

3M™ Flux Field Directional Material EM25TP

Property

Value

Electrical Resistivity***

2 x 104 Ωm

Typical Permeability (@1 MHz)*

250

Temperature Range**

-25 ~ 90°C