SURFACE MOUNT EMI FILTERS
CHIP FERRITE BEADS
BLM
A Series
The BLM
A Series ferrite beads provide outstanding
electrical characteristics in packages as small as 0402.
For noise applications covering a wide frequency range.
FEATURES
I
Suitable for flow and reflow soldering
I
Wide temperature range
I
High Z characteristics
APPLICATIONS
I
I/O ports, DC power lines, and Signal lines
PART NUMBERING SYSTEM
BLM
11
A
471
SG
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
41: 4.5 x 1.6mm
STANDARD
SIGNAL
A: Standard
IMPEDANCE CODE
at 100MHz
471: 470 ohms
121: 120 ohms
102: 1000 ohms
CHARACTERISTICS
PACKAGING CODE
PB: Bulk
PT: Tape 7” Reel
PT1: Tape 13” Reel
SPECIFICATIONS
Dimensions: mm
Part Number
Impedance
(Ohms)
Typ. @ 100MHz
10
70
200
0.5 ± 0.1
Rated
Current
(mA)
500
DCR
(Ohms max.)
0.05
0.40
0.50
Operating
Temperature
Range
0402
BLM10A100S
BLM10A700S
0.25 ± 0.1
BLM10A121S
BLM10A221SG
BLM10A601SG
BLM10A102SG
BLM11A121S
BLM11A151SG
BLM11A221S
120
220
600
50
1000
120
150
220
200
330
470
100
1.0 ± 0.1
0.5 ± 0.1
0.70
1.10
1.50
0.2
0.25
0.3
0.45
–55 ~ +125°C
0603
0.4 ± 0.2
0.8 ± 0.15
BLM11A331SG
BLM11A471SG
BLM11A601S
BLM11A102S
1.6 ± 0.15
0.8 ± 0.15
0.5
600
1000
100
0.7
Available as standard through authorized Murata Electronics Distributors.
162
CG01-J
SURFACE MOUNT EMI FILTERS
CHIP FERRITE BEADS
BLM
TYPICAL IMPEDANCE CHARACTERISTICS
BLM21A151SG
250
Impedance (Ohms)
Impedance (Ohms)
200
150
100
50
0
1
10
100
1000
A Series
BLM21A221SG
400
320
240
160
80
0
1
10
100
1000
Impedance (Ohms)
BLM21A331SG
500
400
300
200
100
0
1
10
100
1000
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
BLM21A401S
500
Impedance (Ohms)
BLM21A471SG
1000
Impedance (Ohms)
Impedance (Ohms)
800
600
400
200
0
1
10
100
1000
BLM21A601F
1000
800
600
400
200
0
1
10
100
1000
400
300
200
100
0
1
10
100
1000
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
BLM21A601R
1000
Impedance (Ohms)
BLM21A601S
1000
Impedance (Ohms)
Impedance (Ohms)
10
100
1000
800
600
400
200
0
1
BLM21A102F
1500
1200
900
600
300
0
1
10
100
1000
800
600
400
200
0
1
10
100
1000
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
BLM21A102S
1500
BLM31A260S
50
Impedance (Ohms)
Impedance (Ohms)
40
30
20
10
01
10
100
1000
BLM31A700S
100
80
60
40
20
0
1
10
100
1000
Impedance (Ohms)
1200
900
600
300
0
1
10
100
1000
Frequency (MHz)
SURFACE MOUNT
EMI FILTERS
Frequency (MHz)
Frequency (MHz)
BLM31A601S
1000
Impedance (Ohms)
800
600
400
200
0
1
10
(For low speed signal line)
BLM41A800S
100
Impedance (Ohms)
Impedance (Ohms)
1
10
100
1000
80
60
40
20
0
Frequency (MHz)
BLM41A151S
200
160
120
80
40
0
1
10
100
1000
Frequency (MHz)
100
1000
Frequency (MHz)
CG01-J
165
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