SURFACE MOUNT EMI FILTERS
CHIP FERRITE BEADS
BLM
B Series
The BLM
B Series ferrite beads have been developed to
pass signal frequencies from 10MHz to 100MHz while
exhibiting high impedance characteristics to reduce EMI noise
above these specific frequencies.
FEATURES
I
Designed to reduce noise above operating frequencies
from 10 to 100MHz
I
High impedance characteristics
I
Small size
I
Suitable for flow and reflow soldering
APPLICATIONS
I
Computers and peripheral equipment
I
Consumer products
I
High speed circuits
I
Suitable for circuits with unstable ground
PART NUMBERING SYSTEM
BLM
11
B
152
SD
PT
CHIP FERRITE
SERIES
SIZE
10: 1.0 x 0.5mm
11: 1.6 x 0.8mm
21: 2.0 x 1.25mm
31: 3.2 x 1.6mm
HIGH SPEED SIGNALS
B: High Speed
IMPEDANCE CODE
at 100MHz
601: 600 ohms
152: 1500 ohms
CHARACTERISTICS
PACKAGING CODE
PB: Bulk
PT: Tape 7” Reel
PT1: Tape 13” Reel
SPECIFICATIONS
Dimensions: mm
Part Number
BLM10B750SB
BLM10B121SB
BLM10B221SB
BLM10B421SD
BLM10B601SD
BLM10B102SD
BLM11B050SB
BLM11B050SA
BLM11B100SB
BLM11B100SA
BLM11B220SB
BLM11B220SA
BLM11B470SB
BLM11B470SA
BLM11B600SB
BLM11B750S
BLM11B750SA
BLM11B121SB
BLM11B121SA
BLM11B121SD
BLM11B141S
BLM11B151SB
BLM11B151SD
BLM11B221SB
BLM11B221SD
BLM11B331SB
BLM11B331SD
BLM11B421S
BLM11B471SB
BLM11B471SD
BLM11B601S
Impedance
(Ohms)
Typ. at 100MHz
Rated
Current
(mA)
DCR
(Ohms max.)
Operating
Temperature
Range
0402
0.25 ± 0.1
0.5 ± 0.1
1.0 ± 0.1
0.5 ± 0.1
0603
0.4 ± 0.2
0.8 ± 0.15
1.6 ± 0.15
0.8 ± 0.15
75
120
220
420
600
1000
5
5
10
10
22
22
47
47
60
75
75
120
120
120
140
150
150
220
220
330
330
420
470
470
600
100
50
700
500
300
200
300
200
50
200
0.8
1.1
1.4
1.3
1.5
1.4
0.1
0.20
0.15
0.25
0.25
0.35
0.3
0.55
0.35
0.35
0.70
0.5
0.90
0.4
0.55
0.55
0.4
0.65
0.45
0.75
0.5
0.55
1.0
0.55
0.65
–55 ~ +125°C
Available as standard through authorized Murata Electronics Distributors.
166
CG01-J
SURFACE MOUNT EMI FILTERS
CHIP FERRITE BEADS
BLM
SPECIFICATIONS
Dimensions: mm
Part Number
BLM11B102S
0.4 ± 0.2
0.8 ± 0.15
B Series
Operating
Temperature
Range
Impedance
(Ohms)
Typ. @ 100MHz
Rated
Current
(mA)
DCR
(Ohms max.)
0603
1000
1500
1800
2200
2500
5
60
75
120
120
150
150
200
220
220
330
330
420
470
470
600
750
1000
1500
1800
2200
2200
2700
100
0.85
1.2
1.5
1.5
1.5
0.07
0.20
0.25
0.25
0.25
0.25
0.25
0.35
0.35
0.25
0.40
BLM11B152SD
BLM11B182S
BLM11B222SD
BLM11B252SD
BLM21B050S
BLM21B600SB
BLM21B750S
BLM21B121SB
BLM21B121SD
BLM21B151SB
BLM21B151SD
BLM21B201S
BLM21B221SB
BLM21B221SD
BLM21B331SB
BLM21B331SD
BLM21B421S
BLM21B471SB
BLM21B471SD
BLM21B601S
BLM21B751SD
BLM21B102S
BLM21B152SD
BLM21B182SD
BLM21B222SD
BLM21B222S
BLM21B272S
50
1.6 ± 0.15
0.8 ± 0.15
0805
500
0.5 ± 0.2**
1.25 ± 0.2
0.85 ± 0.2*
2.0 ± 0.2
200
0.30
0.30
0.45
0.35
0.35
0.40
0.40
0.45
0.50
0.60
0.60
0.80
–55 ~ +125°C
*1.25 ± 0.3
on BLM21B222S/272S
**0.3 ± 0.2
on BLM21B272S
1206
0.7 ± 0.3
1.6 ± 0.2
1.1 ± 0.2
3.2 ± 0.2
BLM31B601FI
SURFACE MOUNT
EMI FILTERS
600
300
0.35
Available as standard through authorized Murata Electronics Distributors.
COMPARISON BLM11A SERIES vs. BLM11B SERIES
2000
Impedance (Ohms)
1600
1200
800
400
0
1
10
100
1000
BLM11A102S
BLM11B102S
Frequency (MHz)
CG01-J
167
SURFACE MOUNT EMI FILTERS
CHIP FERRITE BEADS
BLM
TYPICAL IMPEDANCE CHARACTERISTICS
BLM10B750SB
400
Impedance (Ohms)
Impedance (Ohms)
300
200
100
0
B Series
BLM10B121SB
800
600
400
200
0
BLM10B221SB
1200
Impedance (Ohms)
900
600
300
0
1
10
100
Frequency (MHz)
1000
1
10
100
Frequency (MHz)
1000
1
10
100
Frequency (MHz)
1000
BLM10B421SD
1000
Impedance (Ohms)
750
500
250
0
BLM10B601SD
1600
Impedance (Ohms)
1200
800
400
0
BLM10B102SD
2000
Impedance (Ohms)
1500
1000
500
0
1
10
100
Frequency (MHz)
1000
1
10
100
Frequency (MHz)
1000
1
10
100
Frequency (MHz)
1000
BLM11B050SB
50
Impedance (Ohms)
40
30
20
10
0
1
10
100
Frequency (MHz)
1000
BLM11B050SA
100
Impedance (Ohms)
75
50
25
0
BLM11B100SB
50
Impedance (Ohms)
40
30
20
10
0
1
10
100
Frequency (MHz)
1000
1
10
100
Frequency (MHz)
1000 2000
BLM11B100SA
200
Impedance (Ohms)
150
100
50
0
BLM11B220SB
100
Impedance (Ohms)
80
60
40
20
0
1
10
100
Frequency (MHz)
1000
BLM11B220SA
600
Impedance (Ohms)
450
300
150
0
1
10
100
Frequency (MHz)
1000 2000
1
10
100
Frequency (MHz)
1000 2000
BLM11B470SB
200
Impedance (Ohms)
160
120
80
40
0
1
10
100
Frequency (MHz)
1000
BLM11B470SA
1600
Impedance (Ohms)
1200
800
400
0
BLM11B600SB
300
Impedance (Ohms)
240
180
120
60
0
1
10
100
Frequency (MHz)
1000
1
10
100
Frequency (MHz)
1000 2000
BLM11B750S
500
Impedance (Ohms)
400
300
200
100
0
1
10
100
Frequency (MHz)
1000
BLM11B750SA
6000
Impedance (Ohms)
4500
3000
1500
0
BLM11B121SB
500
Impedance (Ohms)
400
300
200
100
0
1
10
100
Frequency (MHz)
1000
1
10
100
Frequency (MHz)
1000 2000
168
CG01-J
SURFACE MOUNT EMI FILTERS
CHIP FERRITE BEADS
BLM
TYPICAL IMPEDANCE CHARACTERISTICS
BLM11B121SA
10000
Impedance (Ohms)
Impedance (Ohms)
7500
5000
2500
0
B Series
BLM11B121SD
500
400
300
200
100
0
1
10
100
Frequency (MHz)
1000
BLM11B141S
1000
Impedance (Ohms)
800
600
400
200
0
1
10
100
Frequency (MHz)
1000
1
10
100
Frequency (MHz)
1000 2000
BLM11B151SB
1000
Impedance (Ohms)
800
600
400
200
0
1
10
100
Frequency (MHz)
1000
BLM11B151SD
500
Impedance (Ohms)
400
300
200
100
0
1
10
100
Frequency (MHz)
1000
BLM11B221SB
1000
Impedance (Ohms)
800
600
400
200
0
1
10
100
Frequency (MHz)
1000
BLM11B221SD
500
Impedance (Ohms)
400
300
200
100
0
1
10
100
Frequency (MHz)
1000
BLM11B331SB
1500
Impedance (Ohms)
1200
900
600
300
0
1
10
100
Frequency (MHz)
1000
BLM11B331SD
1000
Impedance (Ohms)
800
600
400
200
0
1
10
100
Frequency (MHz)
1000
BLM11B421S
1000
Impedance (Ohms)
800
600
400
200
0
1
10
100
Frequency (MHz)
1000
BLM11B471SB
2000
Impedance (Ohms)
1600
1200
800
400
0
1
10
100
Frequency (MHz)
1000
BLM11B471SD
1500
Impedance (Ohms)
1200
900
600
300
0
1
10
100
Frequency (MHz)
1000
BLM11B601S
1500
Impedance (Ohms)
1200
900
600
300
0
1
10
100
Frequency (MHz)
1000
BLM11B102S
2000
Impedance (Ohms)
1600
1200
800
400
0
1
10
100
Frequency (MHz)
1000
BLM11B152SD
2500
Impedance (Ohms)
2000
1500
1000
500
0
1
10
100
Frequency (MHz)
1000
SURFACE MOUNT
EMI FILTERS
BLM11B182S
2500
Impedance (Ohms)
2000
1500
1000
500
0
1
10
100
Frequency (MHz)
1000
BLM11B222SD
2500
Impedance (Ohms)
2000
1500
1000
500
0
1
10
100
Frequency (MHz)
1000
BLM11B252SD
3000
Impedance (Ohms)
2500
2000
1500
1000
0
1
10
100
Frequency (MHz)
1000
CG01-J
169
SURFACE MOUNT EMI FILTERS
CHIP FERRITE BEADS
BLM
TYPICAL IMPEDANCE CHARACTERISTICS
BLM21B050S
50
Impedance (Ohms)
Impedance (Ohms)
40
30
20
10
0
1
10
100
1000
Frequency (MHz)
B Series
BLM21B600SB
500
BLM21B750S
500
Impedance (Ohms)
400
300
200
100
0
1
10
100
1000
400
300
200
100
0
1
10
100
1000
Frequency (MHz)
Frequency (MHz)
BLM21B121SB
500
Impedance (Ohms)
BLM21B121SD
300
Impedance (Ohms)
BLM21B151SB
1000
Impedance (Ohms)
800
600
400
200
0
1
10
100
1000
400
300
200
100
0
1
10
100
1000
Frequency (MHz)
240
180
120
60
0
1
10
100
1000
Frequency (MHz)
Frequency (MHz)
BLM21B151SD
300
Impedance (Ohms)
BLM21B201S
1000
Impedance (Ohms)
BLM21B221SB
1000
Impedance (Ohms)
800
600
400
200
0
1
10
100
1000
240
180
120
60
0
1
10
100
1000
Frequency (MHz)
800
600
400
200
0
1
10
100
1000
Frequency (MHz)
Frequency (MHz)
BLM21B221SD
500
Impedance (Ohms)
400
300
200
100
0
1
10
100
1000
Frequency (MHz)
BLM21B331SB
1500
Impedance (Ohms)
1200
900
600
300
0
1
10
100
1000
Frequency (MHz)
BLM21B331SD
1000
Impedance (Ohms)
800
600
400
200
0
1
10
100
1000
Frequency (MHz)
170
CG01-J
