Specify
Surface Mounted Monolithic Crystal Filters
21.4MHz & 45MHz
7.0 +/-0.2
Quartz Crystal Filters
5.0 +/-0.2
4
3
2
1
3
2.54
4
5
6
1
2
Pin
1
2
3
4
5
6
2-Pole
Gnd
Gnd
Out
Gnd
Gnd
4-Pole
Gnd
Connected to 5
In/Out
Gnd
Connected to 2
Out/In
1.0
1.3 Max
4.6
FEATURES
Small Size
Surface Mounted
Low Insertion Loss
Single Package 4-Pole
STANDARD
Model
APPLICATIONS
UHF & VHF Radio
Wireless Telemetry
Wireless LAN
Pagers
SPECIFICATIONS
Centre
Frequency
(MHz)
21.40000
45.000 Fundamental
21.40000
No
Poles
2
4
2
2
4
2
45.000 Fundamental
4
+/-7.5
Passband
Width at -3dB
(kHz)
+/-3.75
Ripple Insertion
Loss
(dB)
(dB)
1
1.5
1
2.5
1.0
2.0
1
1.5
1
1.0
1.0
3.0
4.0
4.0
StopBand
Width
(dB)
(kHz)
18.0
+/-18
35
+/-14
10.0
+/-12.5
15.0
+/-45
35.0
15.0
30.0
+/-25
+/-25
+/-25
Guaranteed
Attenuation
(F0~+/-kHz)
-910 +/-10
-910 +/-10
-910 +/-10
-910 +/-10
+200 ~ +1,000
-200 ~ -1,000
-910+-10%
-200 ~ -1,000
+200 ~ +600
+600 ~ +1,000
Terminating
Impedence
(kOhm//pF)
0.85//6.0
0.85//3.5
0.20//4
3//0.5
1.5//1.5
0.65//3
0.9//2.0
Qty per
Filter
1
2
1
1
1
1
1
21MS7.5A
21MS7.5B
45MSF7.5A
21MS15A
21MS15B
45MSF15A
45MSF15B
(dB)
50
80
70
50
70
70
90
70
20
SOLDER PATTERN
2.2
1.4
1
2
INTERNAL CONNECTION
2
3
4
1
3
4
5
4.0
2.54
6
5
6
6.0
www.aelcrystals.co.uk
q u a r t z
b a s e d
f r e q u e n c y
c o n t r o l
c o m p o n e n t s
Order Hotline +44 1293 524245
50
www.aelcrystals.co.uk
sales@aelcrystals.co.uk
AEL [ AEL CRYSTALS LTD ]
