Surface Acoustic Wave Filters
PAFC Series
Features
• Small and low profile
• Ceramic package type
• Flat pass band characteristics
• Low insertion loss
• Circuit simplification
How to Order
PAFC 243 B
①
①Series
②Center
Frequency
③Type
② ③
Application
• PHS
Pb Free
RoHS Compliant
(Unit : mm)
0.8
1.0
0.7
③
Dimensions
③
③
③
(Unit : mm)
0.5
③
①
0.5
0.8
0.7
③
Fig. A
Fig. B
1.27
3.8
1.27
①
②
③
④
1.27
③
③
3.8
③
Tolerance:
0.1[mm]
①
INPUT
②
OUTPUT
③
GROUND
④
N.C.
②
③
1.27
①
①
②
②
①
①
②
③
③
3.8
②
Tolerance:
0.1[mm]
①
INPUT
②
OUTPUT
③
GROUND
1.3
Test Circuit
Fig. C
3.5pF
IN
OUT
50
50
1.0pF
68nH
68nH
1.0pF
50
5pF
120nH
4.5pF
1:1
5pF
IN
IN
OUT
OUT
5pF
50
150nH
5pF
1:1
1.3
3.8
Fig. D
Specifications
Parts No.
Nominal Center
Group Delay
Pass Band Stop Band Attenuation
Ripple
Operating
Storage Dimen- Test Recommended Taping
Frequency
Insertion
Time
Width
Loss
(fn110kHz) (fn110kHz) Temperature Temperature sions Circuit LandPattern Dimensions
(fn)
(at 3dB)
fn600kHz fn1.2MHz fnfa MHz()
PAFC243B
243.95MHz 4.0dB max.
130kHz
min. 30dB min.40dB min.60dB min. 1.5dB max.1.2s max.
PAFC248C
248.45MHz 4.5dB max.
130kHz
min. 30dB min.35dB min.60dB min. 1.5dB max.1.2s max.
Note PAFC248C : fa½21.5MHz
PAFC243B : fa½21.6MHz
10
to 60°C
20
to 80°C
Fig. A Fig. C Fig. E Fig. G
Fig. B Fig. D Fig. F Fig. G
Recommended Land Pattern
(Unit : mm)
(Unit : mm)
Fig. E
0.9
G
IN
G
OUT
0.9
G
0.37
0.9
IN
0.37
OUT
0.9
Fig. F
1.8
0.9
OUT
0.9
0.9
0.37
G
G
0.9
IN
G
0.37
1.3
1.8
1.3
G: GROUND
1.3
0.9
0.9
1.3
G: GROUND
Surface Acoustic Wave Filters
PAFC Series
Taping Dimensions
A
E
B
H
J
L
(Unit : mm)
Recommended Temperature Profile IR Reflow
Temp.(°C)
250
200
Peak Temp.
235°C±5°C
2 to 3sec.
Fig. G
C
D
K
F
150
G
M
100
150°±10°C
200°C
40 sec. max.
50
Code A
Dimen
4.0
-sion
B
C
D
E
F
G
H
J
K
L
M
0
0 to 60sec.
60 to 120sec.
Time
2.0 12.0 5.5 1.75 1.55 8.0 1.55 4.3 4.3
0.3 2.05
Characteristics
PAFC248C (Pass Band Characteristics)
PAFC248C (Spurious Characteristics)
0
Group delay time(1.0sec/Div)
10
20
Attenuation(dB)
30
40
50
60
70
80
90
247.450
248.450
Frequency(MHz)
249.450
0.0
10.0
20.0
Attenuation(dB)
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
223.450
233.450
243.450
253.450
Frequency(MHz)
263.450
273.450
PAFC243B (Pass Band Characteristics)
PAFC243B (Spurious Characteristics)
0
10
Attenuation(dB)
20
30
40
50
60
70
80
90
242.95
243.95
Frequency(MHz)
244.95
Group delay time(1.0sec/Div)
0
10
Attenuation(dB)
20
30
40
50
60
70
80
90
223.95
233.95
243.95
253.95
263.95
Frequency(MHz)
京公网安备 11010802033920号
EEWORLD
