SURFACE MOUNT EMI FILTERS
CHIP FERRITE BEADS
BLMR Series
The BLMR Series ferrite beads are designed to minimize
signal wave form distortion while exhibiting high impedance
characteristics.
FEATURES
■ Low signal distortion
■High impedance characteristics
■Small size
APPLICATIONS
■ Digital Interface Circuits
BLM 11 R 121 SK PT
CHIP FERRITE SIZE LOW DISTORTION IMPEDANCE CODE CHARACTERISTICS PACKAGING
SERIES 11: 1.6 x 0.8mm R: Low at 100MHz CODE
21: 2.0 x 1.25mm Distortion 121: 120 ohms PB: Bulk
Type 471: 470 ohms PT: Tape 7”Reel
PT1: Tape 13”Reel
PART NUMBERING SYSTEM
174 CG01-J
Operating
Dimensions: mm Part Number Impedance (Ohms) Rated Current DCR Temperature
Typ. at 100MHz (mA)
(Ohms max.)
Range
BLM11R121SK 120 0.25
BLM11R221SK 220
200
0.3
BLM11R471SK 470 0.5
BLM11R601SK 600 0.6
–55°C
BLM11R102SK 1000 100 0.8
~
BLM21R121SK 120 0.15 +125°C
BLM21R221SK 220 0.2
BLM21R471SK 470 200 0.25
BLM21R601SK 600 0.3
BLM21R102SK 1000 0.5
0805
0603
SPECIFICATIONS
0.4 ± 0.2
1.6 ± 0.15 0.8 ± 0.15
0.8 ± 0.15
0.85 ± 0.2
1.25 ± 0.2
2.0 ± 0.2
0.5 ± 0.2
Available as standard through authorized Murata Electronics Distributors.
SURFACE MOUNT EMI FILTERS
CHIP FERRITE BEADS
TYPICAL IMPEDANCE CHARACTERISTICS
CG01-J 175
BLMR Series
BLM11R121SK
200
150
100
50
0
Impedance (Ohms)
1 10 100 1000
Frequency (MHz)
BLM11R221SK
400
300
200
100
0
Impedance (Ohms)
1 10 100 1000
Frequency (MHz)
BLM11R471SK
600
450
300
150
0
Impedance (Ohms)
1 10 100 1000
Frequency (MHz)
BLM11R601SK
1000
750
500
250
0
Impedance (Ohms)
1 10 100 1000
Frequency (MHz)
BLM11R102SK
1200
900
600
300
0
Impedance (Ohms)
1 10 100 1000
Frequency (MHz)
BLM21R121SK
200
150
100
50
0
Impedance (Ohms)
1 10 100 1000
Frequency (MHz)
BLM21R221SK
300
225
150
75
0
Impedance (Ohms)
1 10 100 1000
Frequency (MHz)
BLM21R471SK
600
450
300
150
0
Impedance (Ohms)
1 10 100 1000
Frequency (MHz)
BLM21R601SK
1000
750
500
250
0
Impedance (Ohms)
1 10 100 1000
Frequency (MHz)
BLM21R102SK
1200
900
600
300
0
Impedance (Ohms)
1 10 100 1000
Frequency (MHz)
SURFACE MOUNT
EMI FILTERS