QUARTZ
EURO
MONOLITHIC CRYSTAL FILTERS
Through-hole MCF 49T, 2, 4, 6 & 8 poles
21.4 and 45MHz
SPECIFICATIONS
Pass
Bandwidth
Stop
Bandwidth
Guaranteed
Attenuation
Insertion
Loss
Package
Term.
Imp.
Ω//pF
Channel
Spacing
(kHz)
No. of
Poles
Ripple
Model
Tandem
Set
One
Package
dB
dB
kHz
kHz
dB max. dB max. dB
kHz
12.5
20.0
25.0
50.0
21M7.5A
21M7.5B
21M7.5C
21M7.5D
21M12A
21M12B
21M12C
21M12D
21M15A
21M15B
21M15C
21M15D
21M30A
21M30B
21M30C
21M30D
2
4
6
8
2
4
6
8
2
4
6
8
2
4
6
8
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
±15
20 ±18
40 ±15
45 ±8.75
65 ±8.75
20 ±25
40 ±20
45 ±15
65 ±15
18 ±25
40 ±25
45 ±18
65 ±18
15 ±45
40 ±50
45 ±35
65 ±35
0.5
1.0
2.0
2.0
0.5
1.0
2.0
2.0
0.5
1.0
2.0
2.0
0.5
1.0
2.0
2.0
1.5
2.5
3.5
4.0
1.5
2.5
3.0
4.0
1.5
2.5
3.0
4.0
1.5
2.5
3.0
4.0
35
65
65
90
35
65
65
90
35
55
65
90
30
30
65
90
±300~±1000 850//6.0
±300~±1000 850//5.0
±12.5~±300 850//5.0 49T (3 pcs)
±12.5~±300 850//5.0 49T (4 pcs)
±300~±1000 1.2k//3.0
49T
49T (pair)
L1
L2
49T
±300~±1000 1.2k//2.5
49T (pair)
1.2k//2.5 49T (3 pcs)
1.2k//2.5 49T (4 pcs)
±20~±300
±20~±300
L1
L2
49T
±300~±1000 1.5k//2.0
±300~±1000 1.5k//2.0
49T (pair)
±25~±300
±25~±300
1.5k//2.0 49T (3 pcs)
1.5k//2.0 49T (4 pcs)
L1
L2
49T
±300~±1000 1.5k//1.0
±300~±1000 2.2k//0.5
±15
±15
±15
49T (pair)
±45~±300
±50~±300
2.2k//0.5 49T (3 pcs)
2.2k//0.5 49T (4pcs)
L1
L2
SPECIFICATIONS
Pass
Bandwidth
Stop
Bandwidth
Guaranteed
Attenuation
Insertion
Loss
Package
Tandem
Set
Term.
Imp.
Ω//pF
Channel
Spacing
(kHz)
No. of
Poles
Ripple
Model
One
Package
dB
dB
kHz
kHz
dB max. dB max. dB
kHz
12.5
25.0
50.0
45M7.5A
45M7.5B
45M15A
45M15B
45M30A
45M30B
2
4
2
4
2
4
3
3
3
3
3
3
±3.75
±3.75
±7.5
±7.5
±15
10 ±12.5
30 ±12.5
15 ±25
30 ±25
15 ±60
30 ±50
1.0
1.0
1.0
1.0
1.5
1.0
2.0
4.0
2.0
3.0
2.5
3.0
65
80
35
80
35
80
±300~±1000 200//4.0
±300~±1000 350//6.5
±300~±1000 650//3.0
±300~±1000 650//3.0
±300~±1000 1.2k//0
U5
U1
U5 (pair) U1 (pair)
U5 U1
U5 (pair) U1 (pair)
U5 U1
±15
±300~±1000 1.2k//0.7 U5 (pair) U1 (pair)
PART NUMBER FORMAT
Example: 21M7.5A
Centre Frequency Code
21M = 21.4MHz
45M = 45.0MHz
Pass Bandwidth (at 3dB min.)
7.5 = ±3.75kHz
12 = ±6.0kHz
Number of Poles
A = 2 poles
B = 4 poles
C = 6 poles
D = 8 poles
15 = ±7.5kHz
30 = ±15kHz
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk
EUROQUARTZ [ EUROQUARTZ LIMITED ]
