＊ The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by
Fujitsu Media Devices for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of Fujitsu Media Devices or others.
＊ The information contained herein may be changed without prior notice. It is therefore advisable to contact Fujitsu Media Devices before proceeding
with the design of equipment incorporating this product.
No. SRF942NPC31L 2002-04-01
Ta = -25 ～ +75℃
Items Conditions [MHz] Min. Typ.* Max. Unit
Maximum insertion
loss in pass band
925～ 960
(+25℃) － 2.6 3.3 dB
Maximum insertion
loss in pass band
925～ 960
(-25～+75℃) － 2.8 3.3 dB
Pass band flatness 925～ 960
(+25℃) － 1.1 1.8 dB
Pass band flatness 925～ 960
(-25～+75℃) － 1.3 1.8 dB
DC ～ 880 30 44 － dB
880～ 905 22 31 － dB
905～ 915
(+25℃) 14 20 － dB
905～ 915
(-25～+75℃) 14 19 － dB
980～1850
(+25℃) 17 22 － dB
980～1850
(-25～+75℃) 16 20 － dB
1850～1920 25 37 － dB
1920～2880 25 33 － dB
2880～3840 20 33 － dB
3840～4000 18 36 － dB
Out of band
rejection
(Absolute value)
4000～6000 15 20 － dB
925～ 960 － 2.5 3.1
Pass band VSWR (Input)
(Output) 925～ 960 － 2.1 2.7
Nominal impedance － 50 － Ω
*Typical values are specified at 25℃
ELECTRICAL CHARACTERISTICS PACKAGE DIMENSION
FUJITSU MEDIA DEVICES
SRF942NPC31L
○SYSTEM………………………………………… EGSM Rx FILTER
○CARRIER FREQUENCY………………………… 925 …960 MHz
MEASUREMENT CIRCUIT
TERMINATIONS
#1. GROUND
#2. INPUT
#3. GROUND
#4. OUTPUT
50Ω
50Ω
FREQUENCY CHARACTERISTICS
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
842.5 862.5 882.5 902.5 922.5 942.5 962.5 982.5 1002.5 1022.5 1042.5
Frequency (MHz)
Transfer Function
(
dB
)
2.5
2.0
R 0.15
Unit：mm
1.25
0.25
0.50
1.00
0.74
0.75
0.10
#
2
#
1
#
3
#
4
FUJITSU MEDIA DEVICES LTD.
(Ta = 25℃ unless otherwise noted)
Items Electrodes Ratings Notes
DC voltage Between any
two electrodes 0 V
Input power Between input
and ground 13 dBm
Operating temp. -25 ～ +75 ℃
Storage temp. -40 ～ +85 ℃
ABSOLUTE MAXIMUM RATINGS (Ta=25℃
℃℃
℃)
FREQUENCY CHARACTERISTICS
FUJITSU MEDIA DEVICES
SRF942NPC31L
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
842.5 862.5 882.5 902.5 922.5 942.5 962.5 982.5 1002.5 1022.5 1042.5
Frequenc y ( MHz)
Transfer Function
(
dB
)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
0 600 1200 1800 2400 3000 3600 4200 4800 5400 6000
Frequency (MHz)
Transfer Function
(
dB
)
-9.0
-8.0
-7.0
-6.0
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
917.5 922.5 927.5 932.5 937.5 942.5 947.5 952.5 957.5 962.5 967.5
Frequenc y ( MHz)
Transfer Function
(
dB
)
1
2
3
4
5
6
7
8
9
10
11
917.5 922.5 927.5 932.5 937.5 942.5 947.5 952.5 957.5 962.5 967.5
Frequency (MHz)
VSWR
