DSS6NB32A471Q55B Datasheet, PDF (7/40 Pages) Murata Manufacturing Co., Ltd. – EMI Suppression Filters (Lead Type EMIFIL)

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Outline of EMI Suppression Filters (EMIFILr) for DC Line
oEMIGUARDr
EMIGUARDr ..............p.22–29
VFC2H
VFR3V
VFS6V
VFS9V
c Outline
o EMIGUARDr eliminates both surge noise and EMI noise
applying some unique design like the use of dielectric
varistor material to a 3 terminal capacitor.
o Effective when high frequency noise and high voltage
surge suppression are required, and also in situations
when surging starts at extremely high speeds. This type
of surging cannot be eliminated with general type
varistors.
Construction of EMIGUARDr (VFS9V)
Varistor
Electrode
Ferrite
Lead
c Surge Absorption Effect of EMIGUARDr
Type of Filter
No filter
Three-terminal capacitor is
used to suppress the surge.
EMIGUARDr is used to
suppress the surge. (VFS6V)
Surge Absorption Effect of EMIGUARDr
4kV
500V
/div
–1kV
–100ns
50ns/div
400ns
4kV
500V
/div
–1kV
–100ns
50ns/div
400ns
4kV
500V
/div
–1kV
–100ns
50ns/div
400ns
5