1
Data Sheet
!Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifi cations are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifi cations because there is no space for detailed specifi cations. Therefore, please approve our product
specifi cations or transact the approval sheet for product specifi cations before ordering.
http://www.murata.com/
1
Noise Suppression Products/EMI Suppression Filters > For Automotive > Chip Ferrite Bead for Automotive
2012.1.10
oThis data sheet is applied for CHIP FERRITE BEAD used for Automotive Electronics equipment for your design.
For Automotive Chip Ferrite Bead for Automotive
BLM21A Series (0805 Size)
c Dimensions
2.0±0.2
0.5±0.2
1.25±0.2
EIA CODE : 0805
0.85±0.2
(in mm)
: Electrode
c Equivalent Circuit
(Resistance element becomes dominant
at high frequencies.)
c Packaging
Code Packaging Minimum Quantity
D180mm Paper Tape 4000
J330mm Paper Tape 10000
BBulk(Bag) 1000
c Rated Value (p: packaging code)
Part Number Impedance
(at 100MHz/20°C)
Impedance
(at 1GHz/20°C) Rated Current DC Resistance Operating
Temperature Range
BLM21AG121SH1p120ohm ±25% - 800mA 0.1ohm max. -55 to +125°C
BLM21AG151SH1p150ohm ±25% - 800mA 0.1ohm max. -55 to +125°C
BLM21AG221SH1p220ohm ±25% - 800mA 0.13ohm max. -55 to +125°C
BLM21AG331SH1p330ohm ±25% - 700mA 0.16ohm max. -55 to +125°C
BLM21AG471SH1p470ohm ±25% - 700mA 0.19ohm max. -55 to +125°C
BLM21AG601SH1p600ohm ±25% - 600mA 0.21ohm max. -55 to +125°C
BLM21AG102SH1p1000ohm ±25% - 500mA 0.28ohm max. -55 to +125°C
Number of Circuits: 1
c Impedance-Frequency Characteristics (Main Items)
1200
900
600
300
01 10 100 30001000
BLM21AG331SH1
BLM21AG221SH1
BLM21AG601SH1
BLM21AG471SH1
BLM21AG121SH1
BLM21AG102SH1
BLM21AG151SH1
Frequency (MHz)
Impedance (Ω)
Continued on the following page.
2
Data Sheet
!Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifi cations are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifi cations because there is no space for detailed specifi cations. Therefore, please approve our product
specifi cations or transact the approval sheet for product specifi cations before ordering.
http://www.murata.com/
2
Noise Suppression Products/EMI Suppression Filters > For Automotive > Chip Ferrite Bead for Automotive
2012.1.10
oThis data sheet is applied for CHIP FERRITE BEAD used for Automotive Electronics equipment for your design.
Continued from the preceding page.
c Impedance-Frequency Characteristics
BLM21AG121SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
200
150
100
50
0
R
X
Z
c Impedance-Frequency Characteristics
BLM21AG151SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
200
150
100
50
0
R
X
Z
c Impedance-Frequency Characteristics
BLM21AG221SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
300
60
120
180
240
0
R
X
Z
c Impedance-Frequency Characteristics
BLM21AG331SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
400
300
200
100
0
R
X
Z
c Impedance-Frequency Characteristics
BLM21AG471SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
600
450
300
150
0
X
R
Z
c Impedance-Frequency Characteristics
BLM21AG601SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
800
600
400
200
0
X
R
Z
Continued on the following page.
3
Data Sheet
!Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifi cations are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifi cations because there is no space for detailed specifi cations. Therefore, please approve our product
specifi cations or transact the approval sheet for product specifi cations before ordering.
http://www.murata.com/
3
Noise Suppression Products/EMI Suppression Filters > For Automotive > Chip Ferrite Bead for Automotive
2012.1.10
oThis data sheet is applied for CHIP FERRITE BEAD used for Automotive Electronics equipment for your design.
Continued from the preceding page.
c Impedance-Frequency Characteristics
BLM21AG102SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
1200
900
600
300
0
X
R
Z
c !Caution/Notice
!Caution (Rating)
1. Do not use products beyond the rated current as
this may create excessive heat and deteriorate
the insulation resistance.
2. Be sure to provide an appropriate fail-safe
function on your product to prevent a second damage
that may be caused by the abnormal function or
the failure our product.
Notice
Solderability of Tin plating termination chip might be
deteriorated when low temperature soldering profi le
where peak solder temperature is below the Tin melting
point is used. Please confi rm the solderability of Tin
plating termination chip before use.
