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
BLM18E_SH/TH Series (0603 Size)
c Dimensions
BLM18EGpppTH1
BLM18EGpppSH1
0.5±0.15
0.8±0.15
(in mm)
T
1.6±0.15 0.8±0.15
0.4±0.2
T
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
BLM18EG101TH1p100ohm ±25% 140ohm (Typ.) 2000mA 0.045ohm max. -55 to +125°C
BLM18EG121SH1p120ohm ±25% 145ohm (Typ.) 2000mA 0.04ohm max. -55 to +125°C
BLM18EG181SH1p180ohm ±25% 260ohm (Typ.) 2000mA 0.05ohm max. -55 to +125°C
BLM18EG221TH1p220ohm ±25% 300ohm (Typ.) 1000mA 0.15ohm max. -55 to +125°C
BLM18EG331TH1p330ohm ±25% 450ohm (Typ.) 500mA 0.21ohm max. -55 to +125°C
BLM18EG391TH1p390ohm ±25% 520ohm (Typ.) 500mA 0.30ohm max. -55 to +125°C
BLM18EG471SH1p470ohm ±25% 550ohm (Typ.) 500mA 0.21ohm max. -55 to +125°C
BLM18EG601SH1p600ohm ±25% 700ohm (Typ.) 500mA 0.35ohm 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
BLM18EG 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
500
c Impedance-Frequency Characteristics (Main Items)
BLM18EG_TH1 Series
1000
800
600
200
400
01 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
BLM18EG391TH1
BLM18EG101TH1
BLM18EG221TH1
BLM18EG331TH1
c Impedance-Frequency Characteristics (Main Items)
BLM18EG_SH1 Series
01 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
1000
800
600
200
400
BLM18EG601SH1
BLM18EG121SH1
BLM18EG471SH1
BLM18EG181SH1
c Impedance-Frequency Characteristics
BLM18EG101TH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
0
25
50
75
125
100
150
Z
R
X
c Impedance-Frequency Characteristics
BLM18EG121SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
0
40
80
120
160
200
Z
R
X
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
BLM18EG181SH1
0
100
200
300
400
1 10 100 1000 3000
Impedance (Ω)
Frequency (MHz)
Z
R
X
c Impedance-Frequency Characteristics
BLM18EG221TH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
0
100
200
300
400
Z
R
X
c Impedance-Frequency Characteristics
BLM18EG331TH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
0
100
200
300
400
500
Z
R
X
c Impedance-Frequency Characteristics
BLM18EG391TH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
0
250
500
750
1000
Z
R
X
c Impedance-Frequency Characteristics
BLM18EG471SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
0
200
400
600
800
Z
R
X
c Impedance-Frequency Characteristics
BLM18EG601SH1
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
0
200
600
400
800
1000
Z
R
X
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.
