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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 ? and matching network
Z L = 50 ? and matching network
B3770
426.075 MHz
min.
typ.
@ 25 ?C
max.
Center frequency
f C
—
426.075
—
MHz
(center frequency between 3 dB points)
Minimum insertion attenuation
α min
incl. loss in matching elements
excl. loss in matching elements
—
—
1.9
1.6
3.0
2.7
dB
dB
Pass band (relative to α min )
426.00 ... 426.15 MHz
425.98 ... 426.17 MHz
425.94 ... 426.21 MHz
—
—
—
0.5
0.7
1.0
2.0
3.0
6.0
dB
dB
dB
Pass bandwidth
α rel ≤ 3 dB
0.62
0.68
0.74
MHz
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
52
48
27
26
17
56
52
32
35
21
—
—
—
—
—
dB
dB
dB
dB
dB
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
17
38
50
45
60
55
20
43
55
50
65
60
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
Impedance for pass band matching 1)
Input: Z IN
= R IN
|| C IN
—
250 || 2.4
—
? || pF
Output: Z OUT = R OUT || C OUT
—
250 || 2.4
—
? || pF
1)
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
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相关代理商/技术参数
B39431-B3770-Z810 制造商:EPCOS 制造商全称:EPCOS 功能描述:SAW Components Low-loss Filter 426,075 MHz
B39431B3771Z810 功能描述:信号调节 434.42 MHz SMD RoHS:否 制造商:EPCOS 产品:Duplexers 频率:782 MHz, 751 MHz 频率范围: 电压额定值: 带宽: 阻抗:50 Ohms 端接类型:SMD/SMT 封装 / 箱体:2.5 mm x 2 mm 工作温度范围:- 30 C to + 85 C 封装:Reel
B39431B3774Z810 功能描述:信号调节 433.92 MHz SMD RoHS:否 制造商:EPCOS 产品:Duplexers 频率:782 MHz, 751 MHz 频率范围: 电压额定值: 带宽: 阻抗:50 Ohms 端接类型:SMD/SMT 封装 / 箱体:2.5 mm x 2 mm 工作温度范围:- 30 C to + 85 C 封装:Reel
B39431B3775Z810 功能描述:信号调节 433.92 MHz RoHS:否 制造商:EPCOS 产品:Duplexers 频率:782 MHz, 751 MHz 频率范围: 电压额定值: 带宽: 阻抗:50 Ohms 端接类型:SMD/SMT 封装 / 箱体:2.5 mm x 2 mm 工作温度范围:- 30 C to + 85 C 封装:Reel
B39431B3778Z810 功能描述:信号调节 433.42 MHz RoHS:否 制造商:EPCOS 产品:Duplexers 频率:782 MHz, 751 MHz 频率范围: 电压额定值: 带宽: 阻抗:50 Ohms 端接类型:SMD/SMT 封装 / 箱体:2.5 mm x 2 mm 工作温度范围:- 30 C to + 85 C 封装:Reel
B39431B3780Z810 功能描述:信号调节 QCC8B Frontendfilter RoHS:否 制造商:EPCOS 产品:Duplexers 频率:782 MHz, 751 MHz 频率范围: 电压额定值: 带宽: 阻抗:50 Ohms 端接类型:SMD/SMT 封装 / 箱体:2.5 mm x 2 mm 工作温度范围:- 30 C to + 85 C 封装:Reel
B39431-B3780-Z810 制造商:EPCOS 制造商全称:EPCOS 功能描述:SAW Components Low-loss Filter 433,92 MHz
B39431B3782Z810 功能描述:信号调节 433.92 MHz 50Ohm SMD RoHS:否 制造商:EPCOS 产品:Duplexers 频率:782 MHz, 751 MHz 频率范围: 电压额定值: 带宽: 阻抗:50 Ohms 端接类型:SMD/SMT 封装 / 箱体:2.5 mm x 2 mm 工作温度范围:- 30 C to + 85 C 封装:Reel