Feedthru Filters
— W2F4 / W3F4 Series
EMI Filtering, Broadband Filtering, LCD Filtering
GENERAL DESCRIPTION
W3F4 Series
Available in a 4-Element 0508 and 0612 Feedthru Array package, AVX’s line of Feedthrus
is an ideal choice for EMI suppression, broadband I/O filtering, LCD filtering and Vcc power
line conditioning. The unique construction of the Feedthru capacitor provides low parallel
inductance and offers excellent decoupling capability for all high di/dt environments and
provides significant noise reduction in digital circuits up to 5 GHz. A range of filtering
characteristics is available. The Feedthru Array contains four elements with a common
ground connection, making it an ideal choice for multi-line designs. Additional benefits of
the multi-element array package are reduced placement costs, reduced component
counts and PCB space savings. Feedthru filters can be used to meet IEC, MIL-STD461E, FCC, and SAE radiated and conducted emission requirements.
0612
HOW TO ORDER
W3F4
5
C
221
8
A
T
3A
Size & Style
W2H1=0805
W3H1=0612
W=Plated Ni & Sb
L=Plated SnPb
Voltage
Dielectric
Capacitance
Code
Capacitance
Tolerance
Failure
Rate
Terminations
T=Plated Ni & Sn
B=Plated SnPb
Packaging
FREQUENCY CHARACTERISTICS
Part Number
Roll Off Frequency
Center Frequency
10 db Point
20 db Range
W3F41A2208AT
270 MHz
2640 MHz
970 MHz
1780 MHz
3500 MHz
W3F41A4708AT
65 MHz
2000 MHz
185 MHz
600 MHz
3400 MHz
W3F41A1018AT
65 MHz
2030 MHz
185 MHz
560 MHz
3500 MHz
W3F45C2218AT
35 MHz
1885 MHz
120 MHz
470 MHz
3300 MHz
W3F45C4718AT
20 MHz
1860 MHz
60 MHz
220 MHz
3500 MHz
W2F43A2208AT
208 MHz
4750 MHz
616 MHz
1407 MHz
7300 MHz
W2F43A4708AT
110 MHz
2750 MHz
330 MHz
900 MHz
4600 MHz
W2F43A1018AT
60 MHz
1300 MHz
179 MHz
501 MHz
7200 MHz
CAPACITOR VALUES & PERFORMANCE CHARACTERISTICS
Part Number
Typical Capacitance
Insulation Resistance
Temperature Characteristics
W3F41A2208AT
22pF
> 1000 MΩ
NP0
W3F41A4708AT
47pF
> 1000 MΩ
NP0
W3F41A1018AT
100pF
> 1000 MΩ
NP0
W3F45C2218AT
220pF
> 1000 MΩ
X7R
W3F45C4718AT
470pF
> 1000 MΩ
X7R
W2F43A2208AT
22pF
> 1000 MΩ
NP0
W2F43A4708AT
47pF
> 1000 MΩ
NP0
W2F43A1018AT
100pF
> 1000 MΩ
NP0
CASE SIZE & VOLTAGE RATINGS
Part Number
W3F41A2208AT
W3F41A4708AT
W3F41A1018AT
Case Size
Current Rating
DC Resistance
Voltage Rating
0612
300 mA
< 0.6Ω
100 V
W3F45C2218AT
W3F45C4718AT
0612
300 mA
< 0.6Ω
50 V
W2F43A2208AT
W2F43A4708AT
W2F43A1018AT
0508
50 mA
< 3.0Ω
25 V
9
Feedthru Filters
— W2F4 / W3F4 Series
EMI Filtering, Broadband Filtering, LCD Filtering
W3F41A2208AT S21 Curves
Typical
AVX W3F41A2208AT Typical S21
0
-10
dB
-20
-30
-40
1
3
2
4
-50
0.1
1
10
100
1000
10000
FREQUENCY (MHz)
Far Side Crosstalk
1
2
3
4
Typical
AVX W3F41A2208AT
Typical Far-side XTALK
Elements 1 - 3
0
0
-10
-10
-20
-20
-30
-30
-40
-40
dB
dB
Typical
AVX W3F41A2208AT
Typical Far-side XTALK
Elements 1 - 2
-50
-50
-60
-60
-70
-70
-80
-80
-90
-90
0.1
1
10
100
1000
10000
0.1
1
FREQUENCY (MHz)
1000
10000
1000
10000
Typical
AVX W3F41A2208AT
Typical Far-side XTALK
Elements 2 - 3
0
0
-10
-10
-20
-20
-30
-30
-40
-40
dB
dB
100
FREQUENCY (MHz)
Typical
AVX W3F41A2208AT
Typical Far-side XTALK
Elements 1 - 4
-50
-50
-60
-60
-70
-70
-80
-80
-90
-90
0.1
1
10
100
FREQUENCY (MHz)
10
10
1000
10000
0.1
1
10
100
FREQUENCY (MHz)
Feedthru Filters
— W2F4 / W3F4 Series
EMI Filtering, Broadband Filtering, LCD Filtering
W3F41A4708AT S21 Curves
Typical
AVX W3F41A4708AT Typical S21
0
-10
dB
-20
-30
-40
1
3
2
4
-50
0.1
1
10
100
1000
10000
FREQUENCY (MHz)
Far Side Crosstalk
1
2
3
4
Typical
AVX W3F41A4708AT
Typical Far-side XTALK
Elements 1 - 3
0
0
-10
-10
-20
-20
-30
-30
-40
-40
dB
dB
Typical
AVX W3F41A4708AT
Typical Far-side XTALK
Elements 1 - 2
-50
-50
-60
-60
-70
-70
-80
-80
-90
0.1
1
10
100
1000
-90
0.1
10000
1
FREQUENCY (MHz)
0
-10
-20
-20
-30
-30
-40
-40
dB
dB
0
-50
-60
-70
-70
-80
-80
100
FREQUENCY (MHz)
10000
1000
10000
-50
-60
10
1000
Typical
AVX W3F41A4708AT
Typical Far-side XTALK
Elements 2 - 3
-10
1
100
FREQUENCY (MHz)
Typical
AVX W3F41A4708AT
Typical Far-side XTALK
Elements 1 - 4
-90
0.1
10
1000
10000
-90
0.1
1
10
100
FREQUENCY (MHz)
11
Feedthru Filters
— W2F4 / W3F4 Series
EMI Filtering, Broadband Filtering, LCD Filtering
W3F41A1018AT S21 Curves
Typical
AVX W3F41A1018AT Typical S21
0
-10
dB
-20
-30
-40
1
3
2
4
-50
0.1
1
10
100
1000
10000
FREQUENCY (MHz)
Far Side Crosstalk
1
2
3
4
Typical
AVX W3F41A1018AT
Typical Far-side XTALK
Elements 1 - 3
Typical
AVX W3F41A1018AT
Typical Far-side XTALK
Elements 1 - 2
0
0
-10
-10
-20
-20
-30
dB
dB
-30
-40
-50
-40
-50
-60
-60
-70
-70
-80
-80
-90
0.1
1
10
100
1000
-90
0.1
10000
1
FREQUENCY (MHz)
0
-10
-20
-20
-30
-30
-40
-40
dB
dB
0
-50
-60
-70
-70
-80
-80
100
FREQUENCY (MHz)
12
10000
1000
10000
-50
-60
10
1000
Typical
AVX W3F41A1018AT
Typical Far-side XTALK
Elements 2 - 3
-10
1
100
FREQUENCY (MHz)
Typical
AVX W3F41A1018AT
Typical Far-side XTALK
Elements 1 - 4
-90
0.1
10
1000
10000
-90
0.1
1
10
100
FREQUENCY (MHz)
Feedthru Filters
— W2F4 / W3F4 Series
EMI Filtering, Broadband Filtering, LCD Filtering
W3F45C2218AT S21 Curves
Typical
AVX W3F45C2218AT Typical S21
0
-10
dB
-20
-30
-40
1
3
2
4
-50
0.1
1
10
100
1000
10000
FREQUENCY (MHz)
Far Side Crosstalk
1
2
3
4
Typical
AVX W3F45C2218AT
Typical Far-side XTALK
Elements 1 - 3
0
-10
-20
-20
-30
-30
-40
-40
-50
-50
-60
-60
-70
-70
-80
-80
-90
0.1
dB
dB
0
-10
1
10
100
1000
-90
0.1
10000
100
Typical
AVX W3F45C2218AT
Typical Far-side XTALK
Elements 1 - 4
Typical
AVX W3F45C2218AT
Typical Far-side XTALK
Elements 2 - 3
0
0
-10
-20
-20
-30
-30
-40
-40
-50
-60
-70
-70
-80
-80
10
100
FREQUENCY (MHz)
1000
10000
1000
10000
1000
10000
-50
-60
1
10
FREQUENCY (MHz)
-10
-90
0.1
1
FREQUENCY (MHz)
dB
dB
Typical
AVX W3F45C2218AT
Typical Far-side XTALK
Elements 1 - 2
-90
0.1
1
10
100
FREQUENCY (MHz)
13
Feedthru Filters
— W2F4 / W3F4 Series
EMI Filtering, Broadband Filtering, LCD Filtering
W3F45C4718AT S21 Curves
Typical
AVX W3F45C4718AT Typical S21
0
-10
dB
-20
-30
-40
1
3
2
4
-50
0.1
1
10
100
1000
10000
FREQUENCY (MHz)
Far Side Crosstalk
1
2
3
4
Typical
AVX W3F45C4718AT
Typical Far-side XTALK
Elements 1 - 3
0
0
-10
-10
-20
-20
-30
-30
-40
-40
dB
dB
Typical
AVX W3F45C4718AT
Typical Far-side XTALK
Elements 1 - 2
-50
-50
-60
-60
-70
-70
-80
-80
-90
0.1
1
10
100
1000
-90
0.1
10000
1
10
100
FREQUENCY (MHz)
FREQUENCY (MHz)
Typical
AVX W3F45C4718AT
Typical Far-side XTALK
Elements 1 - 4
Typical
AVX W3F45C4718AT
Typical Far-side XTALK
Elements 2 - 3
0
1000
10000
1000
10000
0
-10
-10
-20
-20
-30
-30
dB
dB
-40
-50
-40
-60
-50
-70
-60
-80
-90
0.1
1
10
100
FREQUENCY (MHz)
14
1000
10000
-70
0.1
1
10
100
FREQUENCY (MHz)
Feedthru Filters
— W2F4 / W3F4 Series
EMI Filtering, Broadband Filtering, LCD Filtering
W2F43A2208AT S21 Curves
Typical
AVX W2F43A2208AT Typical S21
0
-5
-10
-15
dB (S21)
-20
-25
-30
-35
1
-40
3
2
-45
4
-50
1
10
100
1000
FREQUENCY (MHz)
1
Far Side Crosstalk
3
2
4
Typical
AVX W2F43A2208AT
Typical Far-side XTALK
Elements 1 - 3
Typical
AVX W2F43A2208AT
Typical Far-side XTALK
Elements 1 - 2
0
0
-10
-20
-20
-40
-30
-60
-80
dB (S21)
dB (S21)
-40
-50
-60
-70
-100
-120
-140
-160
-80
-180
-90
-200
-100
1
10
100
1
1000
10
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
Typical
AVX W2F43A2208AT
Typical Far-side XTALK
Elements 2 - 3
Typical
AVX W2F43A2208AT
Typical Far-side XTALK
Elements 1 - 4
0
0
-20
-10
-40
-20
-60
-30
-80
-40
-100
-50
dB (S21)
dB (S21)
100
-120
-140
-160
-60
-70
-80
-180
-90
-200
-100
1
10
200
FREQUENCY (MHz)
1000
1
10
200
1000
FREQUENCY (MHz)
15
Feedthru Filters
— W2F4 / W3F4 Series
EMI Filtering, Broadband Filtering, LCD Filtering
W2F43A4708AT S21 Curves
Typical
AVX W2F43A4708AT Typical S21
0
-10
dB
-20
-30
1
2
-40
3
4
-50
0.1
1
10
100
1000
10000
FREQUENCY (MHz)
Far Side Crosstalk
1
3
2
0
0
-10
-10
-20
-20
-30
-30
-40
-40
|S21| (dB)
|S21| (dB)
Typical
AVX AVX W2F43A4708AT
Typical Far-side XTALK
Elements 1 - 3
Typical
AVX W2F43A4708AT
Typical Far-side XTALK
Elements 1 - 2
4
-50
-60
-50
-60
-70
-70
-80
-80
-90
-100
0.01
-90
0.1
1
10
100
1000
10000
-100
0.01
0.1
1
10
FREQUENCY (MHz)
0
-10
-20
-20
-30
-30
-40
-40
|S21| (dB)
|S21| (dB)
0
-10
-50
-60
-70
-80
-90
-90
-100
-100
10
FREQUENCY (MHz)
16
1000
10000
-60
-80
1
10000
-50
-70
0.1
1000
Typical
AVX W2F43A4708AT
Typical Far-side XTALK
Elements 2 - 3
Typical
AVX W2F43A4708AT
Typical Far-side XTALK
Elements 1 - 4
-110
0.01
100
FREQUENCY (MHz)
100
1000
10000
-110
0.01
0.1
1
10
FREQUENCY (MHz)
100
Feedthru Filters
— W2F4 / W3F4 Series
EMI Filtering, Broadband Filtering, LCD Filtering
W2F43A1018AT S21 Curves
Typical
AVX W2F43A1018AT Typical S21
0
-5
-10
-15
dB (S21)
-20
-25
-30
-35
1
-40
2
3
-45
4
-50
1
10
100
1000
FREQUENCY (MHz)
1
2
Far Side Crosstalk
3
4
Typical
AVX W2F43A1018AT
Typical Far-side XTALK
Elements 1 - 3
Typical
AVX W2F43A1018AT
Typical Far-side XTALK
Elements 1 - 2
0
0
-10
-20
-20
-40
-30
-60
-80
dB (S21)
dB (S21)
-40
-50
-60
-70
-100
-120
-140
-80
-160
-90
-180
-200
-100
1
10
100
1
1000
10
FREQUENCY (MHz)
1000
Typical
AVX W2F43A1018AT
Typical Far-side XTALK
Elements 2 - 3
Typical
AVX W2F43A1018AT
Typical Far-side XTALK
Elements 1 - 4
0
0
-20
-10
-40
-20
-60
-30
-80
-40
-100
-50
dB (S21)
dB (S21)
100
FREQUENCY (MHz)
-120
-140
-160
-60
-70
-80
-180
-90
-200
-100
1
10
200
FREQUENCY (MHz)
1000
1
10
200
1000
FREQUENCY (MHz)
17
Feedthru Filters
— W2F4 / W3F4 Series
EMI Filtering, Broadband Filtering, LCD Filtering
BL
L
W
ES
P
S
X
T
BW
= Feedthru Paths
Center Line
= Common Ground
DIMENSIONS
L
W
T
BW
3.25±0.15
1.60±0.20
1.22 max
(0.128±0.006) (0.063±0.008) (0.048 max)
2.10±0.15
1.30±0.20
1.02 max
(0.083±0.006) (0.051±0.006) (0.040 max)
0.41±0.10
(0.016±0.004)
0.25±0.10
(0.010±0.004)
BL
0.18
(0.007
0.18
(0.007
+0.25
-0.06
+0.010
-0.003)
+0.25
-0.08
+0.010)
-0.003
P
X
0.76 REF.
(0.030 REF.)
0.50 REF.
(0.020 REF.)
millimeters (inches)
S
ES
1.14±0.10
0.38±0.10
0.41±0.10
(0.045±0.004) (0.015±0.004) (0.016±0.004)
0.75±0.10
0.25±0.10
0.25±0.10
(0.030±0.004) (0.010±0.004) (0.010±0.004)
E
D
A
B
C
D
A
F
PAD LAYOUT DIMENSIONS
CASE SIZE
0612
0508
18
A
0.6 (0.024)
0.56 (0.022)
B
1.6 (0.064)
1.32 (0.052)
millimeters (inches)
C
2.2 (0.088)
1.88 (0.074)
D
0.35 (0.014)
0.25 (0.010)
E
0.76 (0.030)
0.50 (0.020)
F
2.6 (0.104)
1.80 (0.071)
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