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RF360 Europe GmbH
A Qualcomm – TDK Joint Venture
SAW Components
SAW RF filter
Short range devices
Series/type:
Ordering code:
Date:
Version:
B3948
B39871B3948H110
August 09, 2013
2.0
RF360 products mentioned within this document are offered by RF360 Europe GmbH and other subsidiaries of
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is a joint venture of Qualcomm Global Trading Pte. Ltd. and EPCOS AG. References in this documentation to
EPCOS AG should properly reference, and shall be read to reference, the RF360 Subsidiaries.
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SAW Components
SAW RF filter
Short range devices
Series/type:
Ordering code:
Date:
Version:
B3948
B39871B3948H110
August 09, 2013
2.0
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 RF filter
Data sheet
Application
s
Low-loss RF filter for remote control receivers
s
Balanced and unbalanced operation possible
B3948
868.60 MHz
Features
s
s
s
s
s
s
s
s
s
s
Package size 3.0 x 3.0 x 1.0 mm
3
Package code DCC6E
RoHS compatible
Approximate weight 0.037 g
Package for
Surface Mount Technology
(SMT)
Ni, gold-plated terminals
Lead free soldering compatible with J - STD20C
Passivation layer Elpas
AEC-Q200 qualified component family
Electrostatic Sensitive Device
(ESD)
Pin configuration
1)
s
s
s
s
s
1
2
4
5
3,6
Input ground (recommended) or input
Input (recommended) or input ground
Output (recommended) or output ground
Output ground (recommended) or output
to be grounded
1) The recommended pin configuration usually offers best
suppression of electrical crosstalk. The filter characteris-
tics refer to this configuration.
Please read
cautions and warnings and
important notes
at the end of this document.
2
August 09, 2013
SAW Components
SAW RF filter
Data sheet
Characteristics
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
T = –40 ˚C to +95 ˚C
Z
S
= 50
Ω
and matching network
Z
L
= 50
Ω
and matching network
min.
Center frequency
Minimum insertion attenuation
incl. loss in matching elements (Q
L
= 90)
excl. loss in matching elements
Pass band (relative to
α
min
)
868.00 ... 869.20 MHz
Relative attenuation
(relative to
α
min
)
α
rel
10.00 ... 820.00 MHz
820.00 ... 862.00 MHz
862.00 ... 863.60 MHz
863.60 ... 866.60 MHz
866.60 ... 867.20 MHz
870.40 ... 871.40 MHz
871.40 ... 875.00 MHz
875.00 ... 890.00 MHz
890.00 ... 950.00 MHz
950.00 ... 1500.00 MHz
1500.00 ... 2500.00 MHz
Impedance
for pass band matching
1)
Input: Z
IN
= R
IN
|| C
IN
Output: Z
OUT
= R
OUT
|| C
OUT
1)
B3948
868.60 MHz
f
C
α
min
—
typ.
@ 25 ˚C
868.60
max.
—
MHz
—
—
2.4
2.1
3.2
2.9
dB
dB
—
0.9
3.0
dB
47
38
32
21
10
10
20
22
38
50
48
52
43
38
28
25
15
24
27
43
55
53
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
—
—
325 || 1.2
325 || 1.2
—
—
Ω
|| pF
Ω
|| pF
Impedance for passband matching bases on an ideal, perfect matching of the SAW filter to source- and to load
impedance (here 50 Ohm). After removal of the SAW filter the input impedance of the input and output match-
ing network is calculated. The conjugate complex value of these characteristic impedances are the input and
output impedances for flat passband. For more details we refer to EPCOS application note #18.
Please read
cautions and warnings and
important notes
at the end of this document.
3
August 09, 2013
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