SAW filters for mobile communications
Series/Type:
B9447
The following products presented in this data sheet are being withdrawn.
Ordering Code
B39242B9447K610
Substitute Product
B39242B9413K610
Date of Withdrawal
2012-07-13
Deadline Last
Orders
2013-06-27
Last Shipments
2013-07-31
For further information please contact your nearest EPCOS sales office, which will also support you in selecting a
suitable substitute. The addresses of our worldwide sales network are presented at www.epcos.com/sales.
EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
SAW Components
SAW filter
Data sheet
Application
s
Low-loss RF filter for mobile telephone
s
s
s
s
s
B9447
2441.75 MHz
bluetooth systems
Impedance transformation from 50
Ω
to100
Ω
Unbalanced to balanced operation
Very low insertion attenuation
Low amplitude ripple
Usable passband 83.5 MHz
Features
s
s
s
s
s
s
s
0,4
Package size 1.4 x1.1 x 0.4 mm
3
Package code QCS5U
RoHS compatible
Approximate weight 0.003 g
Package for
Surface Mount Technology
(SMT)
Ni, gold-plated terminals
Electrostatic Sensitive Device
(ESD)
0,325
2 3
1
0,575
0,25
bottom view
5
0,5 0,5
4
side view
1,4
1,1
top view
Pin configuration
s
1
s
3,4
s
2,5
Input unbalanced
Output balanced
To be grounded
Please read
cautions and warnings and
important notes
at the end of this document.
2
July 31, 2008
SAW Components
SAW filter
Data sheet
Characteristics of Filter
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
T = –30 ˚C to +85˚C
Z
S
=
50
Ω
|| 5.6 nH
Z
L
= 100
Ω
|| 10 nH (balanced)
B9447
typ.
@ 25 ˚C
2441.75
B9447
2441.75 MHz
min.
Center frequency
Maximum insertion attenuation
2400.0 ... 2483.5
Amplitude ripple
(p-p)
2400.0 ... 2483.5
VSWR (Input)
2400.0
VSWR (Output)
2400.0
... 2483.5
MHz
—
f
C
α
max
MHz
∆α
MHz
—
—
—
max.
—
MHz
2.2
2.7
dB
0.5
1.1
dB
1.6
2.0
... 2483.5
MHz
—
2.0
2.3
CMRR
(|S
21
-S
31
| / |S
21
+S
31
|)
2400.0...
2483.5 MHz
Attenuation
0.1
960
1200.0
1570.0
1580.0
1710.0
1870.0
1906.0
1927.0
1964.0
1990.0
2110.0
2170.0
2200.0
2700.0
4000.0
7200.0
1)
2)
3)
18
1)
α
22
—
dB
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
960.0
1200.0
1570.0
1580.0
1710.0
1870.0
1906.0
1927.0
1964.0
1990.0
2110.0
2170.0
2200.0
2250.0
4000.0
6000.0
7500.0
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
50
45
40
45
40
37
28
2)
37
32
3)
37
37
42
37
25
30
45
40
57
53
45
49
45
46
32
42
36
47
44
46
47
30
35
52
50
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
A phase balance of 10
˚
together with an amplitude balance of 1.8 dB correspond to a CMRR of 17.4 dB
1 narrow spike inside this frequency range with typical 32 dB and a typical bandwidth of 0.5MHz at 35 dB
1 narrow spike inside this frequency range with typical 36 dB and a typical bandwidth of 0.5MHz at 37 dB
Please read
cautions and warnings and
important notes
at the end of this document.
3
July 31, 2008
SAW Components
SAW filter
Data sheet
Maximum ratings of Filter
Operable temperature range
Storage temperature range
DC voltage
ESD voltage
Input power at
2400 ... 2483.5 MHz
824 ... 941 MHz
1710 ... 1910 MHz
1920 ... 1980 MHz
1)
B9447
2441.75 MHz
T
T
stg
V
DC
V
ESD
–30/+85
–40/+85
5
50
1)
˚C
˚C
V
V
P
IN
P
IN
P
IN
P
IN
15
15
15
15
dBm
dBm
dBm
dBm
machine model, 10 pulses
source/load impedance
50Ω/100Ω
bluetooth signal
cw
cw
cw
acc. to JESD22-A115A (machine model), 10 negative & 10 positive pulses.
Please read
cautions and warnings and
important notes
at the end of this document.
4
July 31, 2008
SAW Components
SAW filter
Data sheet
Transfer function (narrow band)
B9447
2441.75 MHz
Transfer function (wide band)
Please read
cautions and warnings and
important notes
at the end of this document.
5
July 31, 2008
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