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参数资料
| 型号： | B39311B3784Z810 |
| 厂商： | EPCOS Inc |
| 文件页数： | 3/10页 |
| 文件大小： | 0K |
| 描述： | FILTER SAW 314.45MHZ SMD |
| 标准包装： | 3,000 |
| 频率： | 314.45MHz 中心 |
| 带宽： | 1.1MHz |
| 滤波器类型： | 带通 |
| 插入损耗： | 1.9dB |
| 应用： | 远程控制 |
| 封装/外壳： | 8-SMD，无引线 |
| 安装类型： | 表面贴装 |
| 包装： | 带卷 (TR) |
| 高度（最大）： | 0.059"（1.50mm） |
| 尺寸/尺寸： | 0.150" L x 0.150" W（3.80mm x 3.80mm） |
SAW Components
SAW RF filter
Data sheet
Characteristics
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
T = –40 ?C to+105 ?C
Z S = 50 ? and matching network
Z L = 50 ? and matching network
B3784
314.45 MHz
min.
typ.
@ 25 ?C
max.
Center frequency
f C
—
314.45
—
MHz
Minimum insertion attenuation
α min
incl. loss in matching elements (Q L = 44)
excl. loss in matching elements
—
—
1.9
1.0
2.7
1.8
dB
dB
Pass band (relative to α min )
313.92 ... 314.98 MHz
313.90 ... 315.00 MHz
—
—
1.1
1.3
2.5
3.0
dB
dB
Relative attenuation (relative to α min )
α rel
10.00 ... 250.00 MHz
250.00 ... 294.45 MHz
294.45 ... 304.45 MHz
304.45 ... 312.85 MHz
315.45 ... 317.45 MHz
317.45 ... 322.45 MHz
322.45 ... 329.45 MHz
329.45 ... 339.45 MHz
339.45 ... 600.00 MHz
600.00 ... 1000.00 MHz
1000.00 ... 2500.00 MHz
50
41
35
15
7
20
30
42
45
60
35
55
46
40
20
10
25
35
47
50
65
40
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Impedance for pass band matching 1)
Input: Z IN
= R IN
|| C IN
—
790 || 2.8
—
? || pF
Output: Z OUT = R OUT || C OUT
—
790 || 2.8
—
? || 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 17, 2012
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