参数资料
型号: B39871B3746H110
厂商: EPCOS Inc
文件页数: 3/10页
文件大小: 0K
描述: FILTER SAW 868.60MHZ SMD
标准包装: 9,000
频率: 868.6MHz 中心
带宽: 1.2MHz
滤波器类型: 带通
插入损耗: 2.6dB
应用: 远程控制
封装/外壳: 6-SMD,无引线
安装类型: 表面贴装
包装: 带卷 (TR)
高度(最大): 0.039"(1.00mm)
尺寸/尺寸: 0.118" L x 0.118" W(3.00mm x 3.00mm)
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 ? and matching network
Z L = 50 ? and matching network
B3746
868.60 MHz
min.
typ.
@ 25 ?C
max.
Center frequency
f C
868.60
MHz
Minimum insertion attenuation
α min
incl. loss in matching elements (Q L = 66)
excl. loss in matching elements
2.6
2.0
3.4
2.8
dB
dB
Pass band (relative to α min )
868.00 ... 869.20 MHz
0.9
3.0
dB
Relative attenuation (relative to α min )
α rel
10.00 ... 820.00 MHz
820.00 ... 859.00 MHz
859.00 ... 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
50
32
21
10
10
20
25
40
50
48
55
36
25
25
15
24
30
45
55
53
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Impedance for pass band matching 1)
Input: Z IN
= R IN
|| C IN
470 || 1.2
? || pF
Output: Z OUT = R OUT || C OUT
470 || 1.2
? || 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 #18.
Please read cautions and warnings and
important notes at the end of this document.
3
March 20, 2013
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