SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
B4955
183,6 MHz
SMD ceramic package
QCC12C
Features
s
s
s
s
s
s
s
2,54
111
000
111
000
111
000
111
000
12
11
IF filter for mobile telephone
Channel selection in CDMA systems
Balanced or unbalanced
High rejection, very small size
Low amplitude ripple
Package for
Surface Mounted Technology
(SMT)
Filter surface passivated
2,54 1,0
1
2
111
000
111
000
111
000
111
000
111
000
111
000
111
000
111
000
111
000
111
000
3
11
00
11
00
11111
00000
11111
00000
111
000
111
000
1,4
4
bottom view
111
000
111
000
111
000
111 111
000 000
111
000
111
000
111
000
111
000
111
000
111
000
111
000
9
8
10
111
000
111
000
111
000
11111
00000
11
00
11
00
11
00
7
0,6
111
000
111
000
111
000
111
000
111
000
111
000
111
000
111
000
111
000
111
111
111
000
000
000
111
111
111
000
000
000
1,48
6
5
side view
Terminals
s
Ni, gold plated
5,0
top view
7,0
Dimensions in mm, approx. weight 0,25 g
Pin configuration
12
10
6
4
1, 2, 3, 7, 8, 9
Input
Balanced input or ground
Output
Balanced output or ground
To be grounded
12
4
10
2,8
6
Type
B4955
Ordering code
B39181-B4955-H310
Marking and Package
according to
C61157-A7-A95
Packing
according to
F61074-V8170-Z000
Electrostatic Sensitive Device
(ESD)
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
Source power
T
T
stg
V
DC
P
s
– 40/+ 85
– 40/+ 85
0
10
˚C
˚C
V
dBm
2
Jun 12, 2003
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Specified temperature range:
Terminating source impedance:
Terminating load impedance:
B4955
183,6 MHz
T
= –30˚C .. +85 ˚C
Z
S
= 300Ω || 44nH
Z
L
= 675Ω || 54nH
min.
typ.
183,6
8,1
max.
—
9,5
MHz
dB
Nominal frequency
Minimum insertion attenuation
(including loss in matching network without loss in balun)
f
N
α
min
—
—
Amplitude ripple
f
N
– 0,3 MHz
∆α
...
f
N
+ 0,3
MHz
—
0,6
1,2
dB
Phase linearity
(rms deviation)
f
N
– 0,615MHz ...
f
N
+ 0,615 MHz
Relative attenuation
(relative to
α
min
)
f
N
±
0,615MHz
α
rel
—
1,3
2,8
˚
—
33
33
33
33
33
33
33
33
33
4,0
39
45
44
39
37
43
42
35
37
5,5
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
f
N
– 0,9 MHz
f
N
+
0,9 MHz
f
N
– 1,25 MHz
f
N
+
1,25 MHz
f
N
– 1,7 MHz
f
N
+
1,7 MHz
f
N
±
2,05 MHz
f
N
– 9,0 MHz
f
N
+ 1,25 MHz
...
...
f
N
– 1,25 MHz
f
N
+ 9,0 MHz
3
Jun 12, 2003
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Normalized transfer function
(measurement):
B4955
183,6 MHz
Normalized transfer function
(measurement, passband):
4
Jun 12, 2003
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Test matching network
(Element values depend on pcb layout)
B4955
183,6 MHz
50
Ω
15 pF
15 pF
1:4
33 nH
Q=55
10
6
39 nH
Q=55
6.8 pF
6.8 pF
4:1
50
Ω
12
4
pins 2,8 GND
balanced input: pins 10,12
balanced output: pins 4,6
to be grounded: 1,3,7,9
Published by EPCOS AG
Surface Acoustic Wave Components Division, SAW MC WT
P.O. Box 80 17 09, 81617 Munich, GERMANY
©
EPCOS AG 2003. Reproduction, publication and dissemination of this brochure and the informa-
tion contained therein without EPCOS’ prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of
the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic
Manufacturers’ Association), unless otherwise agreed.
This brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or
the international Representatives.
Due to technical requirements components may contain dangerous substances. For information on
the type in question please also contact one of our Sales Offices.
5
Jun 12, 2003
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