251855B Datasheet, PDF (1/2 Pages) Integrated Technology Future – 125.0 MHz SAW Filter

1. Features
Typical 1dB bandwidth of 17.8 MHz
Low-Loss Filter
Single Ended Operation
Surface Mounted Package (SMD)
2. Electrical Specifications
Operating Temperature : -30℃ ~ +80℃
Center Frequency (fo)
MHz
Insertion Loss
dB
1dB Bandwidth
MHz
3dB Bandwidth
MHz
40dB Bandwidth
MHz
Amplitude Ripple (fo ± 7.5 MHz)
dB
Group Delay Variation (fo ± 7.5 MHz)
nsec
Absolute Delay
usec
Ultimate Rejection
dB
Temperature Coefficient of Frequency
ppm/℃
Room Temperature : +25℃
Insertion Loss
dB
Amplitude Ripple (fo ± 8.1 MHz)
dB
Group Delay Variation (fo ± 8.1 MHz)
nsec
125.0 MHz SAW Filter
Part Number 251855B
Minimum
-
-
17.3
-
-
-
-
-
40
-
Source and Load Impedance = 50Ω
Typical
Maximum
125.0
-
11.0
13.5
17.85
-
18.9
-
22.7
23.2
0.4
1.0
40
80
0.85
0.9
45
-
-86
-
Minimum
-
-
-
Typical
11.0
0.4
40
Maximum
13.0
1.0
80
S1365 Package Dimension
13.30±0.2
10
9
8
7
11
ITF 11A001
6
251855B
12
. 125-17.8M
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 ^39nH
11
C1 ^75pF
5
L3 ^8.2nH _Output
50Ω
15nH
L2
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
Input
Output
Pin Configuration
11
Ground
5
Others
I T F Co., Ltd.
102-901, Bucheon Technopark 364, Samjeong-Dong,
Ojeong-Gu, Bucheon-City,
Gyounggi-Do, Korea 421-809
Tel: [phone]
Fax: [phone]
http://www.itf.co.kr [e-mail]
6, 12
Ground
2011. 11. 04
Rev 1.0