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| 型号： | RF3171 |
| 厂商： | RFM |
| 文件页数： | 1/2页 |
| 文件大小： | 0K |
| 描述： | SAW FILTER 418MHZ TO39-3 |
| 标准包装： | 1,000 |
| 频率： | 418MHz 中心 |
| 带宽： | 600kHz |
| 滤波器类型： | 带通 |
| 插入损耗： | 1.8dB |
| 应用： | 远程控制 |
| 封装/外壳： | TO-205AD，TO-39-3 金属罐 |
| 安装类型： | 通孔 |
| 包装： | 带卷 (TR) |
| 高度（最大）： | 0.125"（3.18mm） |
| 尺寸/尺寸： | 0.370" 直径（9.40mm） |
RF3171
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Ideal Front-End Filter for Wireless Receiver in the UK and USA
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Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
Rugged TO39 Hermetic Package
Complies with Directive 2002/95/EC (RoHS)
Pb
418.0 MHz
SAW Filter
The RF3171 is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide
front-end selectivity in 418.0 MHz receivers. Receiver designs using this filter include superhet with 10.7 MHz
direct conversion and superregen. Typical applications of these receivers are wireless remote-control and
security devices operating in the USA under FCC Part 15.
This coupled-resonator filter (CRF) uses selective null placement to provide suppression, typically greater
than 40 dB, of the LO and image spurious responses of superhet receivers with 10.7 MHz IF. RFM’s
advanced SAW design and fabrication technology is utilized to achieve high performance and very low loss
with simple external impedance matching (not included). Quartz construction provides excellent frequency
stability over a wide temperature range.
TO39-3 Case
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Nominal Frequency
Insertion Loss
Tolerance from 418.0 MHz
f c
? fc
IL
1, 2
1
417.920
1.8
418.080
±80
3.5
MHz
dB
dB
3 dB Bandwidth
BW 3
1, 2
500
600
800
kHz
Rejection
at f C - 21.4 MHz (Image)
40
50
at f C - 10.7 MHz (LO)
1
15
30
dB
Ultimate
80
Temperature
Operating Case Temp.
T C
-35
+85
°C
Turnover Temperature
Turnover Frequency
T O
f O
3, 4
15
25
f C
35
°C
MHz
Freq. Temp. Coefficient
FTC
0.032
ppm/°C 2
Frequency Aging
Impedance @ F C
Absolute Value during the First Year
Z IN =R IN //C IN
Z OUT =R OUT //C OUT
|fA|
5
1
≤ 10
392 // 2.84 pF
476 ? // 3.17 pF
ppm/yr
Lid Symbolization (in addition to Lot and/or Date Codes)
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
RFM RF3171
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2.
3.
4.
5.
6.
7.
8.
Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50 ? test system with
VSWR ≤ 1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, f c . Note that insertion loss, bandwidth,
and passband shape are dependent on the impedance matching component values and quality.
The frequency f c is defined as the midpoint between the 3dB frequencies.
Unless noted otherwise, specifications apply over the entire specified operating temperature range.
The turnover temperature, T O , is the temperature of maximum (or turnover) frequency, f o . The nominal frequency at any case temperature, T c , may
be calculated from: f = f o [1 - FTC (T o - T c ) 2 ].
Frequency aging is the change in fc with time and is specified at +65°C or less. Aging may exceed the specification for prolonged temperatures
above +65°C. Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years.
The design, manufacturing process, and specifications of this device are subject to change without notice.
One or more of the following U.S. Patents apply: 4,54,488, 4,616,197, and others pending.
All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale.
www.RFM.com E-mail: info@rfm.com
?2008 by RF Monolithics, Inc.
Page 1 of 2
RF3171 - 3/21/08
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相关代理商/技术参数 |
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|---|---|
| RF3171D | 功能描述:信号调节 418.0MHz Narrowband Receiver Front End 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 |
| RF3174-000 | 制造商:TE Connectivity 功能描述:POLYSWITCH RESETTABLE DEVICE - Bag 制造商:TE Connectivity 功能描述:POLYSWITCH PTC RESET 240V 0.75A |
| RF3175-000 | 制造商:TE Connectivity 功能描述:POLYSWITCH RESETTABLE DEVICE - Bag 制造商:TE Connectivity 功能描述:POLYSWITCH PTC RESET 240V 1A |
| RF3176-000 | 制造商:TE Connectivity 功能描述:POLYSWITCH RESETTABLE DEVICE - Bag 制造商:TE Connectivity 功能描述:POLYSWITCH PTC RESET 240V 1.25A |
| RF3177-000 | 制造商:TE Connectivity 功能描述:POLYSWITCH RESETTABLE DEVICE - Bag 制造商:TE Connectivity 功能描述:POLYSWITCH PTC RESET 240V 2A |
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