EMI LEADED FILTERS
EMI SUPPRESSION FILTERS
WITH SEMICONDUCTOR SURGE PROTECTION
VFR303 Series
The VFR303 Series is an EMI suppression filter with a built-in
varistor function designed to protect semiconductors, such as
C-MOS and TTl, from ESD surge rushes. The VFR303 series
works well as EMI suppression filter.
FEATURES
ꢀꢀAbsorbs ESD surges, provides IC protection.
ꢀꢀExcellent signal line EMI suppression filter.
ꢀꢀThin and low height enables high density mounting.
APPLICATIONS
Elimination of noise and protection of semiconductors in office
automation equipment, including computers and their peripheral
equipment, copy machines, and communication terminals.
PART NUMBERING SYSTEM
VFR303
—
351
AY
25
SERIES
PACKAGING
Bulk = 351
Taped = 431
TYPE
RATED VOLTAGE
TYPICAL INSERTION LOSS
CHARACTERISTICS (50 Ohms – 3K Ohms)
DIMENSIONS: mm
VFR303-351
0
2.3 max.
8.0 max.
10
20
5.0 max.
Terminal
30
40
50
3 x 0.8 Dia.
F1
25.0 max.
0.45 ± 0.1 Dia.
2.5 ± 0.2
Standard
Mounting Hole
60
70
5.0 ± 0.5
5
10
100
1000
F1: 2.5 ± 0.5
Frequency (MHz)
SPECIFICATIONS
DC Resistance
(Ohms)
(Between
Peak Pulse
Capacitance (1kHz)
(Between
Terminals 1-2)
Rated Voltage
(Between
Terminals 1-2)
Rated Current
(Between
Terminals 1-3)
Varistor
Voltage
Current (Between
Terminals 1-2)
8/20ꢀs
Operating
Temp. Range
Part Number
Terminals 1-3)
50VDC 20%
(V1mA)
ꢀVFR303-351 AY 25
130pF 20%
150 35%
25VDC
20mA
15A
–25 to +85°C
ꢀ
Available as standard through authorized Murata Electronics Distributors.
CG01-I
255
MURATA [ muRata ]
