(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 review our product specifications or consult the approval sheet for product specifications before ordering.
C31E.pdf
Mar.28,2011
BL
Chip Ferrite Bead
Series Introduction
Part Numbering
Series Line Up
Product Detail
!Caution/Notice
Soldering and Mounting
Packaging
Design Kits
p
14
17
22
90
91
95
96
!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 review our product specifications or consult the approval sheet for product specifications before ordering.
C31E.pdf
Mar.28,2011
Block Type EMIFILr
Chip Common Mode Choke Coil
Chip EMIFILr
16
Chip Ferrite Bead
BL
p
Chip Ferrite Bead
Series Introduction
•
Example of Chip Ferrite Bead BLM Series Structure
Inner Electrode
Outer Electrode
Ferrite Sheet
Through Hole
Cross Section
Equivalent Circuit
Chip EMIFILr
•
Line Up Classification of
Chip Ferrite Bead
1600
1400
Meet High-GHz
Band Noise
Impedance (Ω)
1200
1000
800
600
400
High-GHz Band
BLM_G Series
BLM18G
p
BLM15G
p
High
Chip Common Mode Choke Coil
200
0
1
10
100
1000
10000
Frequency (MHz)
BLM_H Series
GHz Band
Noise
Frequency Band
BLM_E Series
BLM18E
p
BLM15E
p
BLM18H
p
BLM15H
p
Block Type EMIFILr
BLM standard line up
•RK(for digital interfaces)
•AG (for general signal lines)
•Bp (for high speed signal lines)
BLM_P Series (for Power Lines)
•Large current available up to 6A
Low
Small
(Less than 1A)
•AX(for general signal lines / power lines)
Rated Current
Large
(1A and more)
!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 review our product specifications or consult the approval sheet for product specifications before ordering.
C31E.pdf
Mar.28,2011
14
BLp Series Introduction
A type: Impedance curve rises from low frequency range. Suppress noise in wide frequency range.
B type: Impedance curve rises sharply. Less damage to signal waveforms.
cComparison
of Impedance Curve
1200
900
Z (Ω)
BLM18BD601SN1
cComparison
of Resistance Element
1200
BLM18BD601SN1
900
R (Ω)
600
300
0
1
BLM18AG601SN1
600
300
BLM18AG601SN1
10
100
1000
1
10
100
1000
Frequency (MHz)
Frequency (MHz)
cComparison
of Test Effect (25MHz)
Test Circuit
29.7cm
Waveform test point
7cm
25MHz
OSC
74HC04
74HC04
1cm
Ferrite Bead
Pattern width 0.15cm
Line impedance 127Ω
74HC00
Both side glass epoxy PCB(ε4.7)
All of back side is GND PCB thickness=0.6mm
BLM_B Series has less damage to high speed signal waveform.
No filter
BLM18AG601SN1
BLM18BD601SN1 Small Distortion
Waveform
Spectrum
Spectrum has been reduced from low
frequency range.
Noise frequency has been reduced without
reducing signals of low frequency.
!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 review our product specifications or consult the approval sheet for product specifications before ordering.
C31E.pdf
Mar.28,2011
15
Block Type EMIFILr
Chip Common Mode Choke Coil
Chip EMIFILr
0
Chip Ferrite Bead
•
Difference between BLM A type and B type (HG type vs HD/HB type)
BL
p
(Part Number)
Chip Ferrite Bead
M
w
18
e
AG
r
102
t
S
Part Numbering
N
1 D
tImpedance
Expressed by three figures. The unit is in ohm (Ω) at 100MHz. The
first and second figures are significant digits, and the third figure
expresses the number of zeros which follow the two figures.
yElectrode
BL
q
Chip Ferrite Bead
y u i o
qProduct
ID
Product ID
BL
wType
Code
A
M
eDimensions
(LgW)
Code
02
03
15
18
2A
21
31
41
Dimensions (LgW)
0.4g0.2mm
0.6g0.3mm
1.0g0.5mm
1.6g0.8mm
2.0g1.0mm
2.0g1.25mm
3.2g1.6mm
4.5g1.6mm
EIA
01005
0201
0402
0603
0804
0805
1206
1806
Type
Array Type
Ferrite Bead Single Type
Chip Ferrite Beads
Expressed by a letter.
Ex.)
Code
S/T
A
uCategory
Code
N
iNumber
of Circuits
Code
1
4
Number of Circuits
1 Circuit
4 Circuits
Category
Standard Type
Electrode
Sn Plating
Au Plating
Chip EMIFILr
rCharacteristics/Applications
Code
*
1
AG
AX
TG
BA
BB
BC
BD
PD
PG
PX
KG
SG
RK
HG
EG
HB
HD
HE
HK
GA
GG
for GHz Band High-speed Signal Lines
for GHz Band Digital Interface
for High-GHz Band High-speed Signal Lines
for High-GHz Band General Use
for Power Supplies (Low DC Resistance Type)
for Digital Interface
for GHz Band General Use
for GHz Band General Use (Low DC Resistance Type)
for Power Supplies
for High-speed Signal Lines
for General Use
Characteristics/Applications
BLM03/15
BLM18
BLM15/18
BLM03/15/18/21, BLA2A
BLM03/15
BLM03/15/18/21, BLA2A/31
BLM15
BLM03/15/18/21/31/41
BLM15
BLM18
BLM18/21
BLM03/15/18
BLM15/18
BLM15/18
BLM03/15/18
BLM18
BLM18
BLM15
BLM15/18
Series
BLM02/03/15/18/21, BLA2A/31
Block Type EMIFILr
Chip Common Mode Choke Coil
*
1
Frequency characteristics vary with each code.
oPackaging
Code
K
L
B
J
D
Packaging
Embossed Taping (ø330mm Reel)
Embossed Taping (ø180mm Reel)
Bulk
Paper Taping (ø330mm Reel)
Paper Taping (ø180mm Reel)
BLM21
*
1
/31/41
All Series
BLM03/15/18
*
3
/21
*
2
, BLA2A/31
BLM02/03/15/18/21
*
2
, BLA2A/31
Series
*
1
BLM21BD222SN1/BLM21BD272SN1 only.
*
3
Except BLM18T
*
2
Except BLM21BD222SN1/BLM21BD272SN1
!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 review our product specifications or consult the approval sheet for product specifications before ordering.
