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with the design of equipment incorporating this product.
No. SRF1855NCC31K 2002-04-01
Ta = -30 ～ +85℃
Items Conditions [MHz] Min. Typ.* Max. Unit
Maximum insertion
loss in pass band
1840～1870 － 1.8 2.5 dB
Pass band flatness 1840～1870 － 0.8 1.5 dB
DC ～1600 30 40 － dB
1750～1780 30 33 － dB
2900～3200 25 33 － dB
Out of band rejection
(Absolute value)
4400～4700 15 26 － dB
Pass band VSWR 1840～1870 － 1.4 2.0 －
Nominal impedance － 50 － Ω
*Typical values are specified at 25℃
ELECTRICAL CHARACTERISTICS PACKAGE DIMENSION
MEASUREMENT CIRCUIT
TERMINATIONS
#1. GROUND
#2. INPUT
#3. GROUND
#4. OUTPUT
FREQUENCY CHARACTERISTICS
50Ω
50Ω
FUJITSU MEDIA DEVICES
SRF1855NCC31K
○SYSTEM……………………………………… K-PCS Rx FILTER
○CARRIER FREQUENCY………………………1840～1870 MHz
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
1605 1655 1705 1755 1805 1855 1905 1955 2005 2055 2105
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. -30 ～ +85 ℃
Storage temp. -40 ～ +85 ℃
ABSOLUTE MAXIMUM RATINGS (Ta=25℃
℃℃
℃)
FUJITSU MEDIA DEVICES
SRF1855NCC31K
FREQUENCY CHARACTERISTICS
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
1605 1655 1705 1755 1805 1855 1905 1955 2005 2055 2105
Freque ncy ( 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
Frequenc y ( 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
1805 1815 1825 1835 1845 1855 1865 1875 1885 1895 1905
Frequenc y ( MHz)
Transfer Function
(
dB
)
1
2
3
4
5
6
7
8
9
10
11
1805 1815 1825 1835 1845 1855 1865 1875 1885 1895 1905
Frequenc y ( MHz)
VSWR
