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261852B Datasheet, PDF (1/2 Pages) Integrated Technology Future – 245.0 MHz SAW Filter
1. Features
Typical 1dB bandwidth of 18.5 MHz
High attenuation
Single Ended Operation
Surface Mounted Package (SMD)
2. Electrical Specifications
Room Temperature: +25℃
Center Frequency (fo)
Insertion Loss
1dB Bandwidth
3dB Bandwidth
40dB Bandwidth
Amplitude Ripple (Fo±9.0MHz)
Group Delay Variation (Fo±9.0MHz)
Absolute Delay
Ultimate Rejection
Temperature Coefficient of Frequency
245.0 MHz SAW Filter
Part Number 261852B
MHz
dB
MHz
MHz
MHz
dB
nsec
usec
dB
ppm/℃
Source and Load Impedance = 50Ω
Minimum Typical Maximum
-
245.0
-
-
27.0
28.5
18.4
18.52
-
-
18.95
-
-
20.86
21.0
-
0.6
1.2
-
25
60
-
2.16
-
45
52
-
-
-18
-
S1365 Package Dimension
13.30±0.2
10
9
8
7
11
ITF 13A001
6
261852B
12
。245-18.5M
5
1
2
3
4
7.62±0.1
7
8
9
10
6
11
1.50±0.1
5
12
4
3
2
1
2.54±0.1
0.80±0.1
Matching Schematic
Input
50Ω
L1 11
L2
5
L3
Output
50Ω
C1
Dimensions shown are nominal in millimeters
Body : Al2O3
Lid : Kovar, Ni Plated
Termination : Au plating 0.3 ~ 1.0um, over a 1.27 ~ 8.89um Ni Plating
L1 = 8.2nH, L2 = 10nH, L3 = 15nH, C1 = 20pF
Pin Configuration
Input
11
Ground
6, 12
Output
5
Others
Ground
I T F Co., Ltd.
102-901, Bucheon Technopark 364, Samjeong-Dong,
Ojeong-Gu, Bucheon-City,
Gyounggi-Do, Korea 421-809
Tel: 82-32-621-1213
Fax: 82-32-621-1218
http://www.itf.co.kr sales@itf.co.kr
2013. 03. 27
Rev 1.0