BLM21BB121SN1D Murata, BLM21BB121SN1D Datasheet - Page 76
BLM21BB121SN1D
Manufacturer Part Number
BLM21BB121SN1D
Description
EMI/RFI Suppressors & Ferrites 0805 120 OHM
Manufacturer
Murata
Series
BLM Br
Specifications of BLM21BB121SN1D
Shielding
Unshielded
Test Frequency
100 MHz
Product
Chip Ferrite Beads
Impedance
120 Ohms
Tolerance
25 %
Maximum Dc Current
200 mAmps
Maximum Dc Resistance
0.25 Ohms
Operating Temperature Range
- 55 C to + 125 C
Package / Case
0805 (2012 metric)
Termination Style
SMD/SMT
Dc Resistance Max
0.25ohm
Dc Current Rating
200mA
Ferrite Mounting
SMD
Ferrite Case Style
0805
Inductor Case Style
0805
No. Of Pins
2
Core Material
Ferrite
Rohs Compliant
Yes
Operating Temperature Min
-55°C
Resistance
0.25ohm
Operating Temperature Max
+125°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
BLM21BB121SN1D
Manufacturer:
MURATA
Quantity:
240 000
Part Number:
BLM21BB121SN1D
Manufacturer:
MURATA/村田
Quantity:
20 000
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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
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