Ferrite Beads. BLM21xxx Datasheet

BLM21xxx Beads. Datasheet pdf. Equivalent

Part BLM21xxx
Description On-Board Type EMI Suppression Filter / Chip Ferrite Beads
Feature CAUTION catalog to prevent smoking and/or burning, Pleaseread readrating ratingand and! ! CAUTION(fo.
Manufacture Murata Electronics
Datasheet
Download BLM21xxx Datasheet

CAUTION catalog to prevent smoking and/or burning, Pleaserea BLM21xxx Datasheet
CAUTION catalog to prevent smoking and/or burning, Pleaserea BLM21xxxx Datasheet
Recommendation Recommendation Datasheet BLM21xxx Datasheet





BLM21xxx
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On-Board Type (DC) EMI Suppression Filters (EMIFILr)
Chip Ferrite Beads Part Numbering
Chip Ferrite Beads
(Part Number)
qProduct ID
Product ID
BL
BL M 18 AG 102 S N 1 D
q w e r t y u io
Chip Ferrite Beads
tImpedance
Expressed by three figures. The unit is in ohm (). The first and
second figures are significant digits, and the third figure
expresses the number of zeros which follow the two figures.
wType
Code
A
M
Type
Array Type
Monolithic Type
eDimensions (LgW)
Code
03
15
18
2A
21
31
41
Dimensions (LgW)
0.6g0.3mm
1.0g0.5mm
1.6g0.8mm
2.0g1.0mm
2.0g1.25mm
3.2g1.6mm
4.5g1.6mm
EIA
0201
0402
0603
0804
0805
1206
1806
yPerformance
Expressed by a letter.
Ex.) Code
S/T
A
uCategory
Code
N
H
iNumber of Circuits
Code
1
4
Performance
Sn Plating
Au Plating
Category
Standard Type
For Automotive
Number of Circuits
1 Circuit
4 Circuits
rCharacteristics/Applications
Code *1
AG
TG
BA
BB
BD
PG
RK
HG
EG
HB
HD
HK
GG
Characteristics/Applications
for General Use
for High-speed Signal Lines
for Power Supplies
for Digital Interface
for GHz Band General Use
for GHz Band General Use (Low DC Resistance type)
for GHz Band High-speed Signal Line
for GHz Band Digital Interface
for High-GHz Band General Use
*1 Frequency characteristics vary with each code.
Series
BLM03/BLM15/BLM18/BLM21/BLM31/BLA2A/BLA31
BLM18
BLM18
BLM15/BLM18/BLM21/BLA2A
BLM15/BLM18/BLM21/BLA2A/BLA31
BLM15/BLM18/BLM21/BLM31/BLM41
BLM18/BLM21
BLM15/BLM18
BLM18
BLM15/BLM18
BLM18
BLM18
oPackaging
Code
K
L
B
J
D
C
Packaging
Plastic Taping (ø330mm Reel)
Plastic Taping (ø180mm Reel)
Bulk
Paper Taping (ø330mm Reel)
Paper Taping (ø180mm Reel)
Bulk Case
*1 BLM21BD222SN1/BLM21BD272SN1 only.
*2 Except BLM21BD222SN1/BLM21BD272SN1
Series
BLM31/BLM41/BLM21 *1
All series
BLM15/BLM18/BLM21*2 /BLA31
BLM03/BLM15/BLM18/BLM21*2 /BLA2A/BLA31
BLM15/BLM18
1
13



BLM21xxx
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C31E12.pdf 04.8.30
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On-Board Type (DC) EMI Suppression Filters (EMIFILr)
Chip Ferrite Bead BLM Series
Essential for Noise Suppression in High Speed Signal
1
Lines and DC Power Lines
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 frequencies 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.
Chip sizes of 0.6x0.3, 1.0x0.5, 1.6x0.8, 2.0x1.25, 3.2x1.6
and 4.5x1.6mm are cataloged. (The BLA series of array
type chip ferrite beads is also cataloged.)
The nickel barrier structure of the external electrodes
provides excellent solder heat resistance.
!Features
The BLM series comprises the R series (for digital interface),
the A series (for standard), the B series (for high speed
signal), the P series (for large current), and the H/E/G series
(for GHz range noise suppression).
1. BLM--R series – For Digital Interface
The BLM-R series can be used in Digital Interface.
Resistance of BLM-R series especially grows in the lower
frequency range. Therefore BLM-R series is less effective
for digital signal waveform at low frequency range and
can suppress the ringing.
2. BLM--A/T series – For Standard
The BLM-A series generates an impedance from the
relatively low frequencies. Therefore the BLM-A series is
effective in noise suppression in the wide frequency
range (30MHz – several hundred MHz).
[Impedance Characteristics]
3. BLM--B series – For High Speed Signal
The BLM-B series can minimize attenuation of the signal
waveform due to its sharp impedance characteristics.
Various impedances are available to match signal
frequency.
4. BLM--P series – For Large Current
The BLM-P series can be used in high current circuits
due to its low DC resistance. It can match power lines to
a maximum of 6A DC (BLM41P).
5. BLM--H/E/G series – For GHz Range Noise Suppression
The BLM--H/E/G series has a modified internal
electrode structure that minimizes stray capacitance and
increases the effective frequency range.
1800
1500
1200
900
600
300
0
1
BLM18HG102SN1
BLM18BD102SN1
BLM18RK102SN1
BLM18AG102SN1
10 100
Frequency (MHz)
1000
14





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