140.0 MHz SAW Filter
Part Number
251803B
1. Features
Typical 1dB bandwidth of
17.8 MHz
High attenuation
Single Ended Operation
Dual In-line Package (DIP)
2. Electrical Specifications
Source and Load Impedance = 50
Operating Temperature : -30℃ ~ +80℃
℃
℃
Center Frequency (fo)
Insertion Loss
1dB Bandwidth
3dB Bandwidth
40dB Bandwidth
Amplitude Ripple (fo ± 8.5 MHz)
Group Delay Variation (fo ± 8.5 MHz)
Absolute Delay
Ultimate Rejection
Temperature Coefficient of Frequency
Input POWER : +10dBm
MHz
dB
MHz
MHz
MHz
dB
nsec
usec
dB
ppm/℃
Minimum
-
-
17.65
-
-
-
-
-
48
-
Typical
140.0
30.5
17.81
18.02
18.85
0.75
40
4.25
53
-18
Maximum
-
32.0
-
-
19.0
1.2
80
-
-
-
Room Temperature : +25℃
℃
Insertion Loss
Amplitude Ripple (fo ± 8.64 MHz)
Group Delay Variation (fo ± 8.64 MHz)
Relative Attenuation
(Fo±8.5) ±1.0MHz
dBc
dB
dB
nsec
Minimum
-
-
-
Typical
30.5
0.75
40
Maximum
32.0
1.2
80
35
45
D3512 Package Dimension
12.8±0.5
5.5max 6.0max
7.6±0.2
2.5±0.2
Matching Schematic
Input
50
Ω
1
L1
5
L2
Output
50
Ω
ITF 13A001
251803B
140-17.8M
35.1±0.5
0.45±0.05
2.5±0.2
25.4±0.2
L1 = 27nH, L2 = 22nH
Pin Configuration
Dimensions shown are nominal in millimeters
Base : Fe(SPCC), Au plating over Ni plated
Cap : Cu & Cr Alloy, Ni Plated
Termination : Kovar, Au Plated
Input
Output
1
5
Ground
Others
2,4
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. 04. 26
Rev 1.0
ITF [ INTEGRATED TECHNOLOGY FUTURE ]
