50
G
IN
G
1.3
(0.051) 1.8
(0.071)
0.9 (0.035)
0.9 (0.035)
0.9 (0.035)
0.37 (0.015)
0.37 (0.015)
G
OUT
G
G: GROUND
1.3
(0.051)
Code A B C D E F G H J K L M
Dim.
4.00 2.00 12.0 5.50 1.75 1.55 8.00 1.55 4.30 4.30 0.30 2.05
(0.157) (0.079) (0.472) (0.217) (0.069) (0.061) (0.315) (0.061) (0.169) (0.169) (0.012) (0.081)
Surface Acoustic Wave Filters
PAFC Series
FEATURES
• Small and low profile • Low insertion loss
• Ceramic package type • Circuit simplification
• Flat pass band characteristics
APPLICATIONS
• PHS
Type
Center Frequency
Series
HOW TO ORDER
PAFC 248 B
Normal Center
Insertion Pass Band Stop Band Attenuation Ripple Group Delay Operating
Part Number
Frequency
Loss Width (fn±110kHz) Time Temperature
(
Fn)
(at 3dB)
fn±600kHz fn±1.2kHz fn±faMHz*
(fn±110kHz)
PAFC248B 248.45MHz 4.0dB max. ±130kHz min. 30dB min. 40dB min. 60dB min. 1.5dB max.. 1.2µs max. -10 to 60°C
PAFC243B 243.95MHz 4.0dB max. ±130kHz min. 30dB min. 40dB min. 60dB min. 1.5dB max.. 1.2µs max. -10 to 60°C
SPECIFICATIONS
68nH 68nH
3.5pF 4.5pF
1.0pF 1.0pF
50Ω50Ω
Input Output
0.8 (0.031)
3
2
3
3
2
3
3
1
3
3
1
3
1.27
(0.050)
1.27
(0.050)
0.7
(0.028)
3.8 (0.150)
3.8 (0.150)
1.3 (0.051)
TEST CIRCUIT
DIMENSIONS millimeters (inches)
Recommended Land Pattern millimeters (inches) Taping Dimension millimeters (inches)
➀
INPUT
➁
OUTPUT
➂
GROUND
A
J
BL
φH
φF
K
C
DE
G M
51
Surface Acoustic Wave Filters
PAFC Series
0
50
100
150
200
250
Temp(°C) Peak Temp
235°C±5°C
150°C±10°C
Time
0 to 60sec 60 to 120sec
200°C
40 sec max
2 to 3sec
RECOMMENDED TEMPERATURE PROFILE IR REFLOW
80
70
60
50
40
30
20
10
0
90
247.45 248.45 249.45
Frequency(MHz)
Attenuation(-dB)
Group delay time(1.0µsec/Div)
80
70
60
50
40
30
20
10
0
90
228.45 238.45 248.45 258.45 268.45
Frequency(MHz)
Attenuation(-dB)
CHARACTERISTICS
PAFC248A Pass Band Characteristics PAFC248A Spurious Characteristics
80
70
60
50
40
30
20
10
0
90
242.95 243.95 244.95
Frequency(MHz)
Attenuation(-dB)
Group delay time(1.0µsec/Div)
80
70
60
50
40
30
20
10
0
90
223.95 233.95 243.95 253.95 263.95
Frequency(MHz)
Attenuation(-dB)
PAFC243B Pass Band Characteristics PAFC243B Spurious Characteristics
