BLM18RK471SN1D Murata Electronics, BLM18RK471SN1D Datasheet - Page 76

• Manufacturer Part Number: BLM18RK471SN1D
• Description: EMI Filter 0.2A Flat Style SMD
• Manufacturer: Murata Electronics
• Type: EMI Suppression Filterr

Specifications of BLM18RK471SN1D

• Case Size: 0603
• Maximum Current Rating: 0.2 A
• Termination: Flat Style

Waveform Distortion Suppressing
Performance of BLMppR Series
Suppression
!Note
74
(220 at 100MHz)
BLM18RK221SN1
Effect
Resister (47 )
• 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.
EMI
(No filter)
is used
is used
Type of Filter
Initial
BLMppR Series
Signal waveform (100nsec/div, 2V/div)
Ringing is caused on the signal waveform.
Such ringing contains several hundred MHz harmonic components and generates noise.
Signal waveform (100nsec/div, 2V/div)
Comparing initial waveform, ringing is suppressed a little.
However there still remains high level waveform distortion.
Signal waveform (100nsec/div, 2V/div)
BLM18R has excellent performance for noise suppression and waveform distortion suppression.
BLM18R suppresses drastically not only spectrum level in more than 100MHz range but waveform distortion.
EMI Suppression Effect / Description
Expand (10nsec/div, 2V/div)
Expand (10nsec/div, 2V/div)
Expand (10nsec/div, 2V/div)
Measuring Circuits
1MHz
AC04
Filter
Spectrum
Spectrum
Spectrum
85
80
75
70
65
60
55
50
45
85
80
75
70
65
60
55
50
45
85
80
75
70
65
60
55
50
45
30
30
30
50
50
50
Pattern20cm
100
100
100
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
150
150
150
200
200
200
Measuring Point
250
250
250
AC00
300
300
300
Mar.28,2011
C31E.pdf