MONOLITHIC CRYSTAL
FILTERS
Fox filters offer excellent features such as sharp cut off characteristics,
low loss and high stability over a wide temperature range which are
superior to LC Filters and Ceramic Filters.
The basic building block for all custom built Fox filters is the two-
pole monolithic filter available in standard package as shown. Two-
pole monolithic filters are cascaded to produce four, six and eight
pole filter responses with the addition of coupling capacitors
between two-pole sections. Standard Fox filters are available with
center frequencies from 10.7 MHz to 90 MHz, and from two to
eight poles.
For custom made filters, please specify the following:
• Ripple
• Holder Size
• Insertion Loss
• Terminating Impedance
• Nominal Frequency • Attenuation
• Pass Bandwidth
• Spurious Response • Operating Temp. Range
Note: 45F Series 45.000 MHz fundamental is a special filter designed for mobile
radio and cellular phone applications.
• MULTI-POLE PACKAGE DIMENSIONS
CASE TYPE
C
D
CN
FILTERS
L
0.590
0.728
0.433
(15.0)
(18.5)
(11.0)
0.472
0.472
0.335
W
(12.0)
(12.0)
(8.5)
0.591
0.591
0.453
H
(15.0)
(15.0)
(11.5)
0.354
0.531
0.291
A
(9.0)
(13.5)
(7.4)
0.197
0.197
0.157
B
(5.0)
(5.0)
(4.0)
70
FOXElectronics
5570 Enterprise Parkway Fort Myers, Florida 33905 USA +001(239)693-0099 FAX +001(239)693-1554
http://www.foxonline.com
© 2002 FOX ELECTRONICS
• STANDARD MONOLITHIC CRYSTAL FILTERS
Type
10M7A
10M7B
10M7C
10M7D
10M12A
10M12B
10M12C
10M12D
10M15A
10M15B
10M15C
10M15D
10M20A
10M20B
16M15A
16M15B
16M15C
16M15D
21M7A
21M7B
21M7C
21M7D
21M12A
21M12B
21M12C
21M12D
21M15A
21M15B
21M15C
21M15D
21M20A
21M20B
21M30A
21M30B
45F15A
45F15B
45F20A
45F20B
45F30A
45F30B
45M15A
45M15B
45M20A
45M20B
70M15A
70M15B
70M20A
70M20B
Frequency
MHz
10.700
10.700
10.700
10.700
10.700
10.700
10.700
10.700
10.700
10.700
10.700
10.700
10.700
10.700
16.900
16.900
16.900
16.900
21.400
21.400
21.400
21.400
21.400
21.400
21.400
21.400
21.400
21.400
21.400
21.400
21.400
21.400
21.400
21.400
45.000
45.000
45.000
45.000
45.000
45.000
45.000
45.000
45.000
45.000
70.000
70.000
70.000
70.000
Pole
2
4
6
8
2
4
6
8
2
4
6
8
2
4
2
4
6
8
2
4
6
8
2
4
6
8
2
4
6
8
2
4
2
4
2
4
2
4
2
4
2
4
2
4
2
4
2
4
Case
49U
49Ux2
C
D
49U
49Ux2
C
D
49U
49Ux2
C
D
49U
49Ux2
49U
49Ux2
C
D
HC80
HC80x2
CN
CN
HC80
HC80x2
CN
CN
HC80
HC80x2
CN
CN
HC80
HC80x2
HC80
HC80x2
HC80
HC80x2
HC80
HC80x2
HC80
HC80x2
HC80
HC80x2
HC80
HC80x2
HC80
HC80x2
HC80
HC80x2
Rev. 05/01/02
Pass Band
dB kHz
3
3
3
3
3
3
3
6
3
3
3
6
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
±3.75
±3.75
±3.75
±3.75
±6.0
±6.0
±6.0
±6.0
±7.5
±7.5
±7.5
±7.5
±10.0
±10.0
±7.5
±7.5
±7.5
±7.5
±3.75
±3.75
±3.75
±3.75
±6.0
±6.0
±6.0
±6.0
±7.5
±7.5
±7.5
±7.5
±10.0
±10.0
±15.0
±15.0
±7.5
±7.5
±10.0
±10.0
±15.0
±15.0
±7.5
±7.5
±10.0
±10.0
±7.5
±7.5
±10.0
±10.0
dB
20
40
45
65
20
40
50
65
18
40
50
65
18
40
18
40
45
65
20
40
45
65
20
40
45
65
18
40
45
65
18
40
15
40
15
30
15
40
15
40
18
40
15
35
15
25
15
35
Stop Band
dB
kHz
±18
±14
±8.75
±8.75
±25
±20
±14
±14
±25
±25
±17.5
±17.5
±34
±34
±25
±25
±17.5
±17.5
±18
±14
±8.75
±9.0
±25
±20
±14
±14
±25
±25
±17.5
±17.5
±34
±34
±45
±50
±25
±25
±34
±48
±50
±60
±28
±30
±30
±40
±30
±25
±40
±40
65
90
65
90
65
90
65
90
65
90
65
90
65
90
kHz
Ripple
Max dB
0.5
1.0
Loss
Max dB
1.5
2.5
3.5
4.0
1.5
2.5
3.0
3.5
1.5
2.5
3.0
3.5
1.5
2.5
1.5
2.5
3.0
3.5
1.5
2.5
3.0
4.0
1.5
2.5
2.5
3.0
1.5
2.5
2.5
3.0
2.0
2.5
1.5
2.5
2.0
3.0
2.0
3.0
2.0
3.0
2.0
3.0
2.0
3.0
2.0
3.0
2.0
3.0
Attenuation
Guaranteed
dB to ±kHz
35
40
50
70
65
90
35
40
50
70
65
90
35
40
50
70
65
90
35
40
50
70
35
40
50
70
65
90
35
50
65
80
65
90
35
50
65
80
65
90
35
50
65
80
65
90
35
50
65
80
35
50
65
80
35
40
70
35
40
70
35
70
35
70
35
70
35
70
35
70
+300 ~ +1000
-200 ~ -1000
+300 ~ +1000
-200 ~ -1000
±12.5 ~ ±300
±12.5 ~ ±300
+300 ~ +1000
-200 ~ -1000
+300 ~ +1000
-200 ~ -1000
±20 ~ ±300
±20 ~ ±300
+300 ~ +1000
-200 ~ -1000
+300 ~ +1000
-200 ~ -1000
±25 ~ ±300
±25 ~ ±300
+300 ~ +1000
-200 ~ -1000
+300 ~ +1000
-200 ~ -1000
+300 ~ +1000
-200 ~ -1000
+300 ~ +1000
-200 ~ -1000
±25 ~ ±300
±25 ~ ±300
+350 ~ +1000
-200 ~ -1000
+350 ~ +1000
-200 ~ -1000
±12.5 ~ ±300
±12.5 ~ ±300
+350 ~ +1000
-200 ~ -1000
+350 ~ + 1000
-200 ~ - 1000
±20 ~ ±300
±20 ~ ±300
+350 ~ +1000
-200 ~ -1000
+350 ~ +1000
-200 ~ -1000
±25 ~ ±300
±25 ~ ±300
+350 ~ +1000
-200 ~ -1000
+350 ~ +1000
-200 ~ -1000
+350 ~ +1000
-300 ~ -1000
+350 ~ +1000
-300 ~ -1000
+500 ~ +1000
-200 ~ -1000
+500 ~ +1000
-200 ~ -1000
+500 ~ +1000
-200 ~ -1000
+500 ~ +1000
-200 ~ -1000
+500 ~ +1000
-300 ~ -1000
+500 ~ +1000
-300 ~ -1000
+500 ~ +1000
-200 ~ -1000
+500 ~ +1000
-200 ~ -1000
+500 ~ +1000
-200 ~ -1000
+500 ~ +1000
-200 ~ -1000
+500 ~ +1000
-200 ~ -1000
+500 ~ +1000
-200 ~ -1000
+500 ~ +1000
-200 ~ -1000
+500 ~ +1000
-200 ~ -1000
Terminating
Impedance
ohms/pF
1.8K//6.0
1.8K//5.0
Cc = 11pF
1.8K//5.0
1.8K//5.0
3.3K//1.5
3.3K//1.5
Cc = 6pF
3.3K//2.0
3.3K//2.0
3.0K//2.0
3.0K//2.0
Cc = 5pF
3.3K//1.5
3.3K//1.5
3.9K//1.0
3.9K//1.0
Cc = 3pF
1.8K//2.0
1.8K//1.5
Cc = 7.5pF
1.8K//1.5
1.8K//1.5
850//6.0
850//5.0
Cc = 16pF
850//5.0
850//5.0
1.2K//3.0
1.2K//2.5
Cc = 10.5pF
1.2K//2.5
1.2K//2.5
1.5K//2.0
1.5K//2.0
Cc = 8pF
1.5K//2.0
1.5K//2.0
1.8K//1.5
1.8K//1.5
Cc = 5pF
3.0K//0.5
3.0K//-0.5
Cc = 3pF
650//4.5
650//1.5
Cc = 9pF
700//2.5
700//1.5
Cc = 6.5pF
800//1.5
800//1.0
Cc = 5pF
4K//-1.0
4K//-1.0
Cc = -1pF
5K//-1.0
5K//-1.0
Cc = -1.5pF
2.0K//-1.0
2.0K//-1.0
Cc = -1pF
2.5K//-1.0
2.5K//-1.0
Cc = -1pF
±12.5
±12.5
2.0
2.0
0.5
1.0
±20
±20
2.0
2.0
0.5
1.0
±25
±25
2.0
2.0
0.5
1.0
0.5
1.0
±25
±25
2.0
2.0
0.5
1.0
±12.5
±12.5
2.0
2.0
0.5
1.0
±20
±20
2.0
2.0
0.5
1.0
±25
±25
2.0
2.0
0.5
1.0
0.5
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
FILTERS
All specifications subject to change without notice.
Note: Operating Temperature -20°C to +70°C
FOXElectronics
5570 Enterprise Parkway Fort Myers, Florida 33905 USA +001(239)693-0099 FAX +001(239)693-1554
http://www.foxonline.com
© 2002 FOX ELECTRONICS
71
