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BLM15BD221SN1D Datasheet(PDF) 4 Page - Murata Manufacturing Co., Ltd.

Part # BLM15BD221SN1D
Description  SMD/BLOCK Type EMI Suppression Filters
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Manufacturer  MURATA [Murata Manufacturing Co., Ltd.]
Direct Link  http://www.murata.com
Logo MURATA - Murata Manufacturing Co., Ltd.

BLM15BD221SN1D Datasheet(HTML) 4 Page - Murata Manufacturing Co., Ltd.

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!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please review our product specifications or consult the approval sheet for product specifications before ordering.
C31E.pdf
Mar.28,2011
15
0
300
600
900
1200
1
10
100
1000
Frequency (MHz)
BLM18BD601SN1
BLM18AG601SN1
0
300
600
900
1200
1
10
100
1000
Frequency (MHz)
BLM18AG601SN1
BLM18BD601SN1
29.7cm
25MHz
OSC
74HC04
74HC04
74HC00
Difference between BLM A type and B type (HG type vs HD/HB type)
A type: Impedance curve rises from low frequency range. Suppress noise in wide frequency range.
B type: Impedance curve rises sharply. Less damage to signal waveforms.
cComparison of Impedance Curve
cComparison of Resistance Element
cComparison of Test Effect (25MHz)
Test Circuit
Waveform test point
1cm
Ferrite Bead
Pattern width 0.15cm
Line impedance 127
Both side glass epoxy PCB(
ε4.7)
All of back side is GND PCB thickness=0.6mm
BLM_B Series has less damage to high speed signal waveform.
Spectrum has been reduced from low
frequency range.
Noise frequency has been reduced without
reducing signals of low frequency.
Waveform
Spectrum
No filter
BLM18AG601SN1
BLM18BD601SN1 Small Distortion
BLp Series Introduction


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