BLM21xxx Murata Electronics, BLM21xxx Datasheet - Page 7

• Manufacturer Part Number: BLM21xxx
• Description: On-Board Type EMI Suppression Filter / Chip Ferrite Beads
• Manufacturer: Murata Electronics

!Note
!Note
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.
BLM03AG100SN1
BLM03AG700SN1
BLM03AG121SN1
BLM03AG241SN1
On-Board Type (DC) EMI Suppression Filters (EMIFILr)
Chip Ferrite Beads BLM03/BLM15/BLM18/BLM21/BLM31/BLM41 Series
BLM03A Series (0201 Size)
Features (BLM_A Series)
Part Number
• 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.
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.
(at 100MHz/20 C)
Impedance
120 25%
240 25%
10 (Typ.)
70 (Typ.)
(ohm)
Rated Current
(mA)
500
200
200
100
Equivalent Circuit
DC Resistance (max.)
(Resistance element becomes dominant
(ohm)
0.1
0.5
0.8
1.0
at high frequencies.)
0.15 0.05
0.6 0.03
Temperature Range
-55 to +125
-55 to +125
-55 to +125
-55 to +125
Operating
( C)
C31E12.pdf 04.8.30
0.3 0.03
: electrode
(in mm)
19
1