IVM06A300X200X0.4 TDK Corporation, IVM06A300X200X0.4 Datasheet - Page 7

• Manufacturer Part Number: IVM06A300X200X0.4
• Description: EMI/RFI Suppressors & Ferrites 300 X 200 X 0.4 mm
• Manufacturer: TDK Corporation

Specifications of IVM06A300X200X0.4

• Dimensions: 200 mm W x 300 mm L x 0.4 mm H
• Shielding: Shielded
• Product: Absorber Sheets & Tiles
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Example of preventing unnecessary radiations
by mobile phones
urement and may not coincide with performance in
other situations.
Using Flexield inside mobile phones not only
prevents internal interferences, but is also very
effective as a countermeasure to unnecessary
radiation. The following examples show how
effective it is:
We evaluated a mobile phone's electrical
field radiation strength level between 300 and
1000MHz and observed radiation exceeding
the permissible value of the VCCI class B in
addition to the 900Mhz carrier frequency.
The frequency measured with the horizontal
polarized wave in accordance with the 3m
regulation was 750MHz. With this figure, it was
assumed that the radiation source would be
the VCO installed in the RF circuit. A 0.05mm-
thick IRL02 material, which was cut 8mm wide,
and 10mm long on the side of the case where
VCO faces, was then attached.
The following chart shows the result. The elec-
tric field strength peak level at issue was re-
duced by about 2.5dB, complying with the
VCCI class B standard.
Initial condition
The data shown here are examples of in-house meas-
With Flexield
55
50
45
40
35
30
25
55
50
45
40
35
30
25
300
300
VCCI Class B
VCCI Class B
Horizontal (3m)
Horizontal (3m)
400
400
Frequency (MHz)
Frequency (MHz)
500
500
600
600
700
700
- 2.5dB
800 900 1000
800 900 1000
TDK CORPORATION
IRL, IRJ, IVM,
IRB, IRE
6
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T:0.05mm
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