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A Qualcomm – TDK Joint Venture
SAW Components
SAW filter
Short range devices
Series/type:
Ordering code:
Date:
Version:
B3770
B39431B3770Z810
December 21, 2012
2.0
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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 filter
Short range devices
Series/type:
Ordering code:
Date:
Version:
B3770
B39431B3770Z810
December 21, 2012
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 filter
Data sheet
Application
s
Low-loss RF filter for remote control receivers
s
Balanced and unbalanced operation possible
B3770
426.075 MHz
Features
s
s
s
s
s
s
s
s
s
s
Package size 3.8 x 3.8 x 1.5 mm
3
Package code QCC8B
RoHS compatible
Approximate weight 0.07 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
s
1
2
5
6
4,8
3,7
Input ground (recommended) or input
Input (recommended) or input ground
Output (recommended) or output ground
Output ground (recommended) or output
Case - ground
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
December 21, 2012
SAW Components
SAW filter
Data sheet
Characteristics
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
T
A
= –40 ˚C to +95 ˚C
Z
S
=
50
Ω
and matching network
Z
L
=
50
Ω
and matching network
min.
Center frequency
(center frequency between 3 dB points)
Minimum insertion attenuation
incl. loss in matching elements
excl. loss in matching elements
Pass band (relative to
α
min
)
426.00 ... 426.15 MHz
425.98 ... 426.17 MHz
425.94 ... 426.21 MHz
Pass bandwidth
α
rel
≤ 3
dB
Relative attenuation
(relative to
α
min
)
α
rel
10.00 ... 406.00 MHz
406.00 ... 415.66 MHz
415.66 ... 423.88 MHz
423.88 ... 424.28 MHz
424.28 ... 425.26 MHz
427.07
434.00
500.00
690.00
790.00
1000.00
...
...
...
...
...
...
434.00
500.00
690.00
790.00
1000.00
2500.00
MHz
MHz
MHz
MHz
MHz
MHz
0.62
0.68
0.74
f
C
α
min
—
—
1.9
1.6
3.0
2.7
—
typ.
@ 25 ˚C
426.075
max.
—
B3770
426.075 MHz
MHz
dB
dB
—
—
—
0.5
0.7
1.0
2.0
3.0
6.0
dB
dB
dB
MHz
52
48
27
26
17
17
38
50
45
60
55
56
52
32
35
21
20
43
55
50
65
60
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Impedance
for pass band matching
1)
Input: Z
IN
= R
IN
|| C
IN
Output: Z
OUT
= R
OUT
|| C
OUT
1)
—
—
250 || 2.4
250 || 2.4
—
—
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 #4.
Please read
cautions and warnings and
important notes
at the end of this document.
3
December 21, 2012
Industrial Control Electronics
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