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SF318

更新时间： 2024-10-29 06:11:11
品牌 Logo 应用领域
VANLONG /
页数 文件大小 规格书
2页 144K
描述
318.00 MHz SAW Filter

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SF318 数据手册

 浏览型号SF318的Datasheet PDF文件第2页 
318.00 MHz SAW Filter  
•
•
•
•
Designed to Provide Front-end selectivity in 318.00 MHz  
Low-Loss, Coupled-Resonator Quartz Design  
Simple External Impedance Matching  
SF318  
Rugged, Hermetic, Low Profile TO-39 Package  
Absolute Maximum Rating (Ta=25°C)  
Parameter  
CW RF Power Dissipation  
Rating  
+10  
Unit  
dBm  
V
P
DC Voltage VDC Between Any Two Pins  
Operating Temperature Range  
Storage Temperature Range  
VDC  
TA  
Tstg  
±30  
-10 ~ +60  
-40 ~ +85  
°C  
°C  
Electronic Characteristics  
Parameter  
Sym  
Minimum  
Typical  
318.00  
3.0  
Maximum  
NS  
Unit  
MHz  
dB  
Nominal Frequency (at 25°C)  
(Center frequency between 3dB point)  
Insertion Loss  
fC  
NS  
-
4.5  
IL  
3dB Passband  
BW3  
-
40  
20  
-
600  
800  
KHz  
dB  
-
-
-
50  
-
at fC - 21.4 MHz (Image)  
at fC - 10.7 MHz (LO)  
Rejection  
30  
-
-
dB  
60  
dB  
Ultimate  
Operating Temperature Range  
Turnover Temperature  
-10  
25  
-
-
+60  
55  
-
TC  
TO  
fO  
°C  
°C  
-
Temperature Stability  
Frequency Aging  
Turnover Frequency  
fC  
MHz  
ppm/C2  
ppm/yr  
MΩ  
Frequency Temperature Coefficient  
Absolute Value during the First Year  
-
0.032  
-
FTC  
|fA|  
-
-
-
10  
-
-
DC Insulation Resistance Between any Two Pins  
1.0  
NS = Not Specified  
Notes:  
1.  
2.  
The frequency fC is defined as the midpoint between the 3dB  
frequencies.  
5.  
6.  
Turnover temperature, T0, is the temperature of maximum (or  
turnover) frequency, f0. The nominal frequency at any case  
temperature, TC, may be calculated from: f = f0 [1 - FTC (T0 - TC)2].  
Unless noted otherwise, all measurements are made with the filter  
installed in the specified test fixture that is connected to a 50Ω test  
system with VSWR ≤ 1.2:1. The test fixture L and C are adjusted  
for minimum insertion loss at the filter center frequency, fC. Note  
that insertion loss, bandwidth, and passband shape are dependent  
on the impedance matching component values and quality.  
The specifications of this device are based on the test circuit  
shown above and subject to change or obsolescence without  
notice.  
7.  
8.  
All equipment designs utilizing this product must be approved by  
the appropriate government agency prior to manufacture or sale.  
3.  
4.  
Unless noted otherwise, specifications apply over the entire  
specified operating temperature range.  
Our liability is only assumed for the Surface Acoustic Wave (SAW)  
component(s) per se, not for applications, processes and circuits  
implemented within components or assemblies.  
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 in subsequent years.  
9.  
For questions on technology, prices and delivery please contact  
our sales offices or email to sales@vanlong.com.  
Phone: +86 10 6301 4184  
Fax: +86 10 6301 9167  
Email: sales@vanlong.com  
Web: http://www.vanlong.com  
SF318  
© April 2004 by Vanlong Technology Co., Ltd.  
12

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