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
■ Features (BLM_A Series)
The chip ferrite beads BLM series is designed to
function nearly as a resistor at noise frequencies,
which greatly reduces the possibility of resonance and
leaves signal wave forms undistorted.
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 to several hundred MHz).
The small size of BLM03A series (0.6x0.3mm) is
suitable for noise suppression in small equipment such
as PA modules for cellular phones.
■ 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°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
BLM03AG601SN1 600 ±25% 100 2.0 -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 C31E13.pdf 05.3.14