19
1
!Note Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
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 beads BLM series comprises ferrite
bead 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 of the small equipment
such as PA modules for cellular phones.
s Equivalent Circuit
(Resistance element becomes dominant
at high frequencies.)
BLM03A Series (0201 Size)
(in mm)
0.6
±0.03
0.3
±0.03
0.3
±0.03
0.15
±0.05
: electrode
Part Number
Impedance
(at 100MHz/20 degree C)
(ohm)
Rated Current
(mA)
DC Resistance (max.)
(ohm)
Operating
Temperature Range
(
°C)
BLM03AG100SN1
10 (Typ.)
500
0.1
-55 to +125
BLM03AG700SN1
70 (Typ.)
200
0.5
-55 to +125
BLM03AG121SN1
120
±25%
200
0.8
-55 to +125
BLM03AG241SN1
240
±25%
100
1.0
-55 to +125
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, you are requested to approve our product specifications or to transact the approval sheet for product specifications before ordering.
!Note
C31E11.pdf 04.3.8