140.0 MHz SAW Filter
Part Number
250308B
1. Features
Typical 1dB bandwidth of 2.8 MHz
Single Ended Operation
Dip Package
2. Electrical Specifications
Source and Load Impedance = 50
Room Temperature : +25℃
℃
Center Frequency (fo)
Insertion Loss
1dB Bandwidth
3dB Bandwidth
40dB Bandwidth
Amplitude Ripple (fo ± 1.25 MHz)
Group Delay Variation (fo ± 1.25 MHz)
Absolute Delay
Ultimate Rejection(fo+/-6.4MHz)
Relative Attenuation
fo+/- 1.8MHz
fo+/- 2.0MHz
fo+/- 2.4MHz
Temperature Coefficient of Frequency
dB
dB
dB
ppm/℃
2
30
45
50
-
35
55
57
-0.03
-
-
-
-
MHz
dB
MHz
MHz
MHz
dB
nsec
usec
dB
Minimum
-
-
2.8
-
-
-
-
-
55
Typical
140.0
23.5
2.84
3.0
3.63
0.55
200
3.81
60
Maximum
-
25.5
-
-
3.72
1.0
350
-
-
D3512 Package Dimension
12.8± 0.5
5.5m ax 6.0m ax
7.6± 0.2
2.5±0.2
Matching Schematic
68 nH
Input
50
Ω
1
47 pF
5
82 nH
Output
50
Ω
ITF 10A001
10A001
250308B
250308B
140-2.8M
140-2.8M
35.1±0.5
43 pF
0.45±0.05
2.5±0.2
25.4±0.2
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
2010. 04. 05
Rev 1.0
ITF [ INTEGRATED TECHNOLOGY FUTURE ]
