Please read rating and
!CAUTION
(for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
!Note
•Please read rating and
!CAUTION
(for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
•This catalog has only typical specifications. Therefore,thereareno space for detailed specifications. Therefore, please approve our productsheet for product specifications before ordering. product specifications before ordering.
This catalog has only typical specifications because you is requested to approve our product specifications or to transact the approval specifications or transact the approval sheet for
C31E12.pdf 04.8.30
On-Board Type (DC) EMI Suppression Filters (EMIFILr)
Chip Ferrite Beads BLM03/BLM15/BLM18/BLM21/BLM31/BLM41 Series
s
Features (BLM_A Series)
The chip ferrite bead BLM series comprises ferrite
beads in the shape of a chip. This ferrite bead
generates a high impedance which at high frequency
mainly consists of a resistance element. The BLM
series is effective in circuits without stable ground
lines because the BLM series does not need a
connection to ground.
The nickel barrier structure of the external
electrodes provides excellent solder heat resistance.
BLM_A series generates an impedance from the
relatively low frequencies. Therefore BLM_A series is
effective in noise suppression in a wide frequency
range (30MHz - several hundred MHz).
The small size of BLM03 series (0.6x0.3mm) is
suitable for noise suppression in small equipment such
as PA modules for cellular phones.
s
Equivalent Circuit
1
(Resistance element becomes dominant
at high frequencies.)
BLM03A Series (0201 Size)
0.6±0.03
0.3±0.03
0.3±0.03
0.15±0.05
: electrode
(in mm)
Part Number
BLM03AG100SN1
BLM03AG700SN1
BLM03AG121SN1
BLM03AG241SN1
Impedance
(at 100MHz/20°C)
(ohm)
10 (Typ.)
70 (Typ.)
120
±25%
240
±25%
Rated Current
(mA)
500
200
200
100
DC Resistance (max.)
(ohm)
0.1
0.5
0.8
1.0
Operating
Temperature Range
(°C)
-55 to +125
-55 to +125
-55 to +125
-55 to +125
19
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