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
BLM21P 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
BLM21PG220SH1p22ohm ±25% - 6000mA 0.009ohm max. -55 to +125°C
BLM21PG300SH1p30ohm (Typ.) - 4000mA 0.014ohm max. -55 to +125°C
BLM21PG600SH1p60ohm ±25% - 3500mA 0.02ohm max. -55 to +125°C
BLM21PG121SH1p120ohm ±25% - 3000mA 0.03ohm max. -55 to +125°C
BLM21PG221SH1p220ohm ±25% - 2000mA 0.045ohm max. -55 to +125°C
BLM21PG331SH1p330ohm ±25% - 1500mA 0.07ohm max. -55 to +125°C
Number of Circuits: 1
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 Derating of Rated Current
In operating temperature exceeding +85°C,
derating of current is necessary for
BLM21PG series.
Please apply the derating curve shown in
chart according to the operating
temperature.
Derating of Rated Current
Operating Temperature (°C)
Rated Current (mA)
850 125
0
1000
2000
3000
1500
6000
4000
3500
c Impedance-Frequency Characteristics (Main Items)
Impedance (Ω)
0
100
200
300
400
500
1 10 100 1000
Frequency (MHz)
3000
BLM21PG220SH1
BLM21PG300SH1
BLM21PG600SH1
BLM21PG221SH1
BLM21PG331SH1
BLM21PG121SH1
c Impedance-Frequency Characteristics
BLM21PG220SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
30
20
10
0
Z
R
X
40
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
BLM21PG300SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
10
20
30
40
0
Z
R
X
50
c Impedance-Frequency Characteristics
BLM21PG600SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
20
40
60
80
0
Z
R
X
100
c Impedance-Frequency Characteristics
BLM21PG121SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
0
40
80
160
120
Z
R
X
c Impedance-Frequency Characteristics
BLM21PG221SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
60
120
180
240
0
Z
R
X
300
c Impedance-Frequency Characteristics
BLM21PG331SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
500
100
200
300
400
0
R
X
Z
Continued on the following page.
4
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/
4
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 !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.
