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ECS-55K20A Datasheet(PDF) 1 Page - ECS, Inc.

Part # ECS-55K20A
Description  MONOLITHIC CRYSTAL FILTERS
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Manufacturer  ECS [ECS, Inc.]
Direct Link  http://www.ecsxtal.com
Logo ECS - ECS, Inc.

ECS-55K20A Datasheet(HTML) 1 Page - ECS, Inc.

  ECS-55K20A Datasheet HTML 1Page - ECS, Inc. ECS-55K20A Datasheet HTML 2Page - ECS, Inc. ECS-55K20A Datasheet HTML 3Page - ECS, Inc.  
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74
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
CRYSTAL FILTERS
CRYSTAL FILTERS
NOMINAL
NUMBER
PASSBAND
RIPPLE
INSERTION
STOPBAND
STOPBAND
GUARANTEED
TERMINATING
MODEL
FREQ. (fO)
OF
3dB MIN.
MAX.
LOSS MAX.
MAX.
MAX.
ATTENUATION
IMPEDANCE
CASE
(MHz)
POLES
(KHz)
(dB)
(dB)
(dB) (KHz)
(dB) (KHz)
(dB) (fO ±KHz)
(Ohms/pF)
35 +300 ~ +1000
ECS-10.7-7.5A
10.7
2
±3.75
0.5
1.5
20 ±18
50 -200 ~ -1000
1800//5.0
HC-49/U
65 +300 ~ +1000
ECS-10.7-7.5B
10.7
4
±3.75
1.0
2.5
40 ±14
80 -200 ~ -1000
1800//4.0
HC-49/U x 2
ECS-10.7-7.5C
10.7
6
±3.75
2.0
3.5
45 ±8.75
65 ±12.5
65 ±12.5 ~ ±300
1800//3.5
SC-3
ECS-10.7-7.5D
10.7
8
±3.75
2.0
4.0
65 ±8.75
90 ±12.5
90 ±12.5 ~ ±300
1800//3.5
SC-4
ECS-21K7.5A
21.4
2
±3.75
0.5
2.0
18 ±12.5
75 -910
1500//6.0
UM-1
ECS-21K7.5B
21.4
4
±3.75
1.0
2.5
35 ±12.5
90 ±910
850//5.0
UM-1 x 2
ECS-21K7.5C
21.4
6
±3.75
2.0
3.0
45 ±8.75
65 ±12.5
65 ±12.5 ~ ±300
850//5.0
SC-1
ECS-21K7.5D
21.4
8
±3.75
2.0
4.0
65 ±9
90 ±12.5
90 ±12.5 ~ ±300
850//5.0
SC-1
ECS-21K7.5E
21.4
10
±3.75
2.0
4.5
75 ±8.75
90 ±10.5
90 ±12.5 ~ ±300
850//5.0
SC-2
MONOLITHIC CRYSTAL FILTERS
ELECTRICAL CHARACTERISTICS (10.7 and 21.4 MHz)
For 12.5 KHz Channel Spacing (Operating Temperature -20 to +70˚C)
ECS’s Monolithic Crystal Filters have very
high Q’s and excellent temperature and
aging characteristics. These filters offer
narrow and intermediate bandwidths. The
monolithic crystal filter is smaller and more
cost effective than a discrete crystal
filter. With the addition of coupling
capacitors between two-pole sections, they
can be cascaded to produce four, six and
eight (or more) pole filter responses.
FEATURES
• High stability for wide temperature ranges
• Sharp cut-off
• RoHS Compliant (Pb Free)
NOMINAL
NUMBER
PASSBAND
RIPPLE
INSERTION
STOPBAND
STOPBAND
GUARANTEED
TERMINATING
MODEL
FREQ. (fO)
OF
3dB MIN.
MAX.
LOSS MAX.
MAX.
MAX.
ATTENUATION
IMPEDANCE
CASE
(MHz)
POLES
(KHz)
(dB)
(dB)
(dB) (KHz)
(dB) (KHz)
(dB) (fO ±KHz)
(Ohms/pF)
35 +300 ~ +1000
ECS-10.7-12A
10.7
2
±6.0
0.5
2.0
18 ±23
40 -200 ~ -1000
2500//2.5
HC-49/U
65 +300 ~ +1000
MF 10.7-12B
10.7
4
±6.0
1.0
2.5
40 ±20
80 -200 ~ -1000
2500//1.5
HC-49/U x 2
MF 10.7-12C
10.7
6
±6.0
2.0
3.0
45 ±14
60 ±20
65 ±20 ~ ±300
2800//1.0
SC-3
MF 10.7-12D
10.7
8
±6.0
2.0
4.0
65 ±14
90 ±20
90 ±20 ~ ±300
2800//1.0
SC-4
35 +350 ~ +1000
ECS-21K12A
21.4
2
±6.0
0.5
2.0
18 ±23
50 -200 ~ -1000
1200//3.0
UM-1
65 +350 ~ +1000
ECS-21K12B
21.4
4
±6.0
1.0
2.5
40 ±20
70 -200 ~ -1000
1200//2.5
UM-1 x 2
ECS-21K12C
21.4
6
±6.0
2.0
3.0
45 ±14
65 ±20
65 ±20 ~ ±300
1200//2.5
SC-1
ECS-21K12D
21.4
8
±6.0
2.0
4.0
65 ±14
90 ±20
90 ±20 ~ ±300
1200//2.5
SC-1
For 20 KHz Channel Spacing (Operating Temperature -20 to +70˚C)


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