SAW Components
Data Sheet B4959
2
Jan 20, 2004
SAW Components
B4959
128,1 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
SMD ceramic package QCC12C
Dimensions in mm, approx. weight 0,155 g
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1,48
side view
7,0
5,0
top view
4
5
6
11
10
12
2,54
1,4
2
8
2,54
0,6
3
1
7
bottom view
9
1,0
Features
s
IF filter for mobile telephone
s
Channel selection in CDMA systems
s
Balanced or unbalanced
s
High rejection, very small size
s
Low amplitude ripple
s
Package for Surface Mounted Technology (SMT)
s
Filter surface passivated
Terminals
s
Ni, gold plated
Pin configuration
6
Input
4
Balanced input or ground
12
Balanced output
10
Balanced output
1, 2, 3, 7, 8, 9
To be grounded
Electrostatic Sensitive Device (ESD)
Type
Ordering code
Marking and Package
according to
Packing
according to
B4959
B39131-B4959-H310
C61157-A7-A95
F61074-V8170-Z000
Maximum ratings
Operable temperature range
T
40/+ 85
C
Storage temperature range
T
stg
40/+ 85
C
DC voltage
V
DC
5
V
Source power
P
s
10
dBm
10
12
2,8
6
4
3
Jan 20, 2004
SAW Components
B4959
128,1 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Specified temperature range:
T
= 30C .. +85 C
Terminating source impedance:
Z
S
= 1270
|| 185 nH
Terminating load impedance:
Z
L
= 1840
|| 180 nH
min.
typ.
max.
Nominal frequency
f
N
--
128,1
--
MHz
Minimum insertion attenuation
min
--
10,4
12,0
dB
(with losses of matching network, without loss of balun)
Amplitude ripple
f
N
0,30 MHz
...
f
N
+ 0,30 MHz
--
0,5
1,0
dB
Phase linearity (rms deviation)
f
N
0,615MHz
...
f
N
+ 0,615 MHz
--
2,0
3,5
Relative attenuation (relative to
min
)
rel
f
N
0,615MHz
--
3,8
4,5
dB
f
N
0,9 MHz
37
50
--
dB
f
N
+
0,9 MHz
37
41
--
dB
f
N
1,25 MHz
37
45
--
dB
f
N
+
1,25 MHz
37
50
--
dB
f
N
1,7 MHz
37
46
--
dB
f
N
+
1,7 MHz
37
47
--
dB
f
N
-
2,05 MHz
40
48
--
dB
f
N
+
2,05 MHz
40
52
--
dB
10,0 MHz
...
f
N
2,05 MHz
40
43
--
dB
f
N
2,05 MHz
...
f
N
0,9
MHz
37
42
--
dB
f
N
+ 0,9 MHz
...
f
N
+ 2,05 MHz
37
40
--
dB
f
N
+ 2,05 MHz
...
200 MHz
40
43
--
dB
172,485 MHz
...
173,715 MHz
60
70
--
dB
207,485 MHz
...
208,715 MHz
45
47
--
dB
4
Jan 20, 2004
SAW Components
B4959
128,1 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Normalized transfer function (measurement):
Normalized transfer function (measurement, passband):
5
Jan 20, 2004
SAW Components
B4959
128,1 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Test matching network
(Element values depend on pcb layout)
C
s1
= 5,6 pF
all coils: Coilcraft 0603
C
p2
= not used
L
p3
= 120 nH
L
p4
= 100 nH
C
s5
= 2,7 pF || 1,5 pF
Published by EPCOS AG
Surface Acoustic Wave Components Division, SAW MC
P.O. Box 80 17 09, 81617 Munich, GERMANY
EPCOS AG 2004. 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.
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