BLM21AG601SN1

Manufacturer Part NumberBLM21AG601SN1
ManufacturerMurata
BLM21AG601SN1 datasheet
 
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Page 125/163:

Absorption of wide-pulse noise

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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.
Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
!Note
This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specificaions before ordering.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
EMI Suppression Effect
Noise Suppression Effect of VFR/VFS Series
Continued from the preceding page.
2. Absorption of wide-pulse noise (50ns/div, 200V/div)
Type of Filter
without Filters
2-terminal capacitor
3-terminal capacitor
(with ferrite bead)
VFS9V
5
124
EMI Suppression Effect
200ns
Noise wave applied
100
90
80
20
10
0%
100
90
80
20
10
0%
100
90
80
20
10
0%
C31E9.pdf 03.3.12
Description
In capacitors the voltage of the residual
surge (1300V) is higher than that of the
above example. The wave height is
almost the same as the original.
Conventional EMI filters do not work for
wide-pulse noise because capacitors
are saturated. In this example, the
residual 1200V surge can cause the
system to breakdown.
Bypassing the high voltage to the
ground, voltage can be surppressed.