SAW Components
SAW RF filter
Automotive telematics
Series/type:
Ordering code:
Date:
Version:
B4235
B39182B4235H910
February 10, 2009
2.1
©
EPCOS AG 2009. Reproduction, publication and dissemination of this data sheet, enclosures
hereto and the information contained therein without EPCOS’ prior express consent is prohibited.
SAW Components
SAW RF filter
Data sheet
Application
s
Low-loss RF filter for automotive telematics GSM
s
B4235
942.5/1842.5 MHz
s
s
s
900/1800 system, receive path
Usable passband:
Filter 1 (GSM900): 30MHz
Filter 2 (GSM1800): 75MHz
Unbalanced and balanced operation of both
filters possible
Impedance transformation from 50
Ω
to 150
Ω
for both filters
Suitable for GPRS class 1 to 12
Features
s
s
s
s
s
s
s
s
s
Package size 3.0 x 2.5 x 0.98 mm
3
Package code QCC10G
RoHS compatible
Approximate weight 0.027 g
Package for
Surface Mount Technology
(SMT)
Ni, gold-plated terminals
Lead free soldering compatible with J - STD20C
AEC-Q200 qualified component family
Electrostatic Sensitive Device
(ESD)
Pin configuration
s
s
s
s
s
9
1
1, 2
3, 4
6
9
5, 7, 8, 10
Output balanced [ Filter 1 ]
Output balanced [ Filter 2 ]
Input [ Filter 2 ]
Input [ Filter 1 ]
Ground (case)
7,8
2
3
6
4
5, 10
Please read
cautions and warnings and
important notes
at the end of this document.
2
February 10, 2009
SAW Components
SAW RF filter
Data sheet
Characteristics Filter 1 (GSM900)
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
T = +25 ˚C
±
2˚C
Z
S
= 50
Ω
(unbalanced)
Z
L
= 150
Ω
(balanced) || 68 nH
min.
Center frequency
f
C
—
typ.
@ 25 ˚C
942.50
max.
—
B4235
942.5/1842.5 MHz
MHz
Maximum insertion attenuation
α
max
925.00 ... 960.00 MHz
Amplitude ripple
(p-p)
∆α
925.00 ... 960.00 MHz
Input VSWR
925.00 ... 960.00 MHz
Output VSWR
925.00 ... 960.00 MHz
Output amplitude balance
(|S
31
/S
21
|)
925.00 ... 960.00 MHz
Output phase balance
(φ(S
31
)−φ(S
21
)+180˚)
925.00 ... 960.00 MHz
Attenuation
10.00
480.00
880.00
905.00
980.00
1050.00
3500.00
4500.00
...
...
...
...
...
...
...
...
480.00
880.00
905.00
915.00
1050.00
3500.00
4500.00
6000.00
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
α
—
1.8
2.2
dB
—
0.6
1.2
dB
—
—
1.9
1.9
2.1
2.1
–2.0
2.0
dB
–10.0
10.0
degree
45
30
24
20
23
30
22
15
53
38
27
25
30
34
26
17
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
Please read
cautions and warnings and
important notes
at the end of this document.
3
February 10, 2009
SAW Components
SAW RF filter
Data sheet
Characteristics Filter 1 (GSM900)
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
T = –20 ˚C to +75 ˚C
Z
S
= 50
Ω
(unbalanced)
Z
L
= 150
Ω
(balanced) || 68 nH
min.
Center frequency
f
C
—
typ.
@ 25 ˚C
942.50
max.
—
B4235
942.5/1842.5 MHz
MHz
Maximum insertion attenuation
α
max
925.00 ... 960.00 MHz
Amplitude ripple
(p-p)
∆α
925.00 ... 960.00 MHz
Input VSWR
925.00 ... 960.00 MHz
Output VSWR
925.00 ... 960.00 MHz
Output amplitude balance
(|S
31
/S
21
|)
925.00 ... 960.00 MHz
Output phase balance
(φ(S
31
)−φ(S
21
)+180˚)
925.00 ... 960.00 MHz
Attenuation
10.00
480.00
880.00
905.00
980.00
1050.00
3500.00
4500.00
...
...
...
...
...
...
...
...
480.00
880.00
905.00
915.00
1050.00
3500.00
4500.00
6000.00
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
α
—
1.8
2.5
dB
—
0.9
1.5
dB
—
—
1.9
1.9
2.1
2.1
–2.5
2.5
dB
–12.0
12.0
degree
45
30
24
11
23
30
22
15
50
38
27
18
30
34
26
17
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
Please read
cautions and warnings and
important notes
at the end of this document.
4
February 10, 2009
SAW Components
SAW RF filter
Data sheet
Transfer function of filter 1(narrow band)
B4235
942.5/1842.5 MHz
Transfer function of filter 1 (wide band)
Please read
cautions and warnings and
important notes
at the end of this document.
5
February 10, 2009
京公网安备 11010802033920号
EEWORLD
