SAW Components
Low-Loss Dual Band Filter for Mobile Communication
Data Sheet
B4235
942,5/1842,5 MHz
Ceramic package
QCC10G
Features
s
Low-loss RF filter for mobile telephone GSM
s
0,4
1
2
3
4
0,45
5
s
s
s
s
s
900/1800 system , receive path
Usable passband:
Filter 1 (GSM900): 35 MHz
Filter 2 (GSM1800): 75 MHz
Unbalanced to balanced operation of both filters
Impedance transformation from 50
Ω
to 150
Ω
for both filters
Suitable for GPRS class 1 to 12
Ceramic package for
Surface Mounted
Technology
(SMT)
RoHS compliant
10
bottom view
0,6
9
8
7
6
0,5
0,8
side view
2,5
0,98
top view
Terminals
s
Ni, gold-plated
3,0
Dimensions in mm, approx. weight
27 mg
Pin configuration
1, 2
3, 4
6
7,8
9
5, 10
Output, balanced [ Filter 1 ]
Output, balanced [ Filter 2]
Input [ Filter 2]
Case ground
Input [ Filter 1 ]
Case ground
9
1
7,8
2
3
6
4
5, 10
Type
B4235
Ordering code
B39182-B4235-H910
Marking and Package
according to
C61157-A7-A142
Packing
according to
F61074-V8174-Z000
Electrostatic Sensitive Device
(ESD)
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
ESD voltage
Input power at
Tx bands:
GSM850, GSM900
GSM1800, GSM1900
T
T
stg
V
DC
V
ESD
*
P
IN
– 40 / + 85
– 40 / +85
5
50
˚C
˚C
V
V
Machine Model, 10 pulses
15
dBm
peak power of GSM signal,
duty cycle 4:8
* - acc. to JESD22-A115A (Machine Model), 10 negative & 10 positive pulses
2
July 14, 2005
SAW Components
Low-Loss Dual Band Filter for Mobile Communication
Data Sheet
B4235
942,5/1842,5 MHz
Characteristics Filter 1 ( GSM900 )
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
T
= +25
±
2 ˚C
Z
S
= 50
Ω
(unbalanced)
Z
L
= 150
Ω
(balanced) || 68 nH
min.
typ.
942,5
max.
—
MHz
Center frequency
Maximum insertion attenuation
925,0 ... 960,0
Amplitude ripple
(p-p)
925,0 ... 960,0
Input VSWR
925,0 ... 960,0
Output VSWR
925,0 ... 960,0
Output amplitude balance
(|S
31
/S
21
|)
925,0 ... 960,0
MHz
MHz
MHz
f
c
α
max
MHz
∆α
—
—
1,8
2,2
dB
—
0,6
1,2
dB
—
—
1,9
1,9
2,1
2,1
MHz
-2,0
—
2,0
dB
Output phase balance
(φ(S
31
)−φ(S
21
)+180˚)
925,0 ... 960,0 MHz
Absolute attenuation
10,0
480,0
880,0
905,0
980,0
1050,0
3500,0
4500,0
... 480,0
... 880,0
... 905,0
... 915,0
...1050,0
...3500,0
...4500,0
...6000,0
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
α
abs
-10,0
—
10,0
degree
45,0
30,0
24,0
20,0
23,0
30,0
22,0
15,0
53,0
38,0
27,0
25,0
30,0
34,0
26,0
17,0
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
3
July 14, 2005
SAW Components
Low-Loss Dual Band Filter for Mobile Communication
Data Sheet
B4235
942,5/1842,5 MHz
Characteristics Filter 1 ( GSM900 )
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
T
= -20 to +75˚ C
Z
S
= 50
Ω
(unbalanced)
Z
L
= 150
Ω
(balanced) || 68 nH
min.
typ.
942,5
max.
—
MHz
Center frequency
Maximum insertion attenuation
925,0 ... 960,0
Amplitude ripple
(p-p)
925,0 ... 960,0
Input VSWR
925,0 ... 960,0
Output VSWR
925,0 ... 960,0
Output amplitude balance
(|S
31
/S
21
|)
925,0 ... 960,0
MHz
MHz
MHz
f
c
α
max
MHz
∆α
—
—
1,8
2,5
dB
—
0,9
1,5
dB
—
—
1,9
1,9
2,1
2,1
MHz
-2,5
—
2,5
dB
Output phase balance
(φ(S
31
)−φ(S
21
)+180˚)
925,0 ... 960,0 MHz
Absolute attenuation
10,0
480,0
880,0
905,0
980,0
1050,0
3500,0
4500,0
... 480,0
... 880,0
... 905,0
... 915,0
...1050,0
...3500,0
...4500,0
...6000,0
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
α
abs
-12,0
—
12,0
degree
45,0
30,0
24,0
11,0
23,0
30,0
22,0
15,0
50,0
38,0
27,0
18,0
30,0
34,0
26,0
17,0
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
4
July 14, 2005
SAW Components
Low-Loss Dual Band Filter for Mobile Communication
Data Sheet
Transfer function of filter 1 (Narrow Band)
B4235
942,5/1842,5 MHz
Transfer function of filter 1 (Wide Band)
5
July 14, 2005
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