145.0 MHz SAW Filter
Part Number
251507B
1. Features
Typical 1dB bandwidth of 15.7 MHz
High attenuation
Single Ended Operation
Dual In-line Package (DIP)
2. Electrical Specifications
Source and Load Impedance = 50
Operating Temperature : +25℃
℃
Center Frequency (fo)
Insertion Loss
1dB Bandwidth
25dB Bandwidth
40dB Bandwidth
50dB Bandwidth
Amplitude Ripple (fo +/- 7.65 MHz)
Group Delay Variation (fo +/- 7.65 MHz)
Absolute Delay
Ultimate Rejection
Temperature Coefficient of Frequency
MHz
dB
MHz
MHz
MHz
MHz
dB
nsec
usec
dB
ppm/℃
℃
Minimum
-
-
15.7
-
-
-
-
-
-
48
-
Typical
145.0
28.8
15.77
16.53
16.7
16.8
0.55
50
4.34
52
-18
Maximum
-
31.0
-
16.6
-
16.9
1.0
100
-
-
-
D3512 Package Dimension
12.8±0.5
5.5max 6.0max
7.6±0.2
2.5±0.2
Matching Schematic
39nH
Input
50
Ω
1
5
39nH
47pF
Output
50
Ω
43pF
ITF 11A001
251507B
145-15.7M
35.1±0.5
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
2011. 06. 27
Rev 1.0
145.0 MHz SAW Filter
Part Number
251507B
3. Typical Performance ( at +25℃ )
℃
25dB Bandwidth
CH1 S21
LOG
10 dB/
REF -28.51 dB
16 Mar 2010 21:03:57
1: 0. 0000 dB
0. 000 000 MHz
CH1 S21
CH2 S21
LOG
LOG
1dB Bandwidth & Ripple
1 dB/
1 dB/
REF -28.36 dB
REF -28.76 dB
16 Mar 2010 21:04:53
1: 0. 0000 dB
0. 000 000 MHz
3: . 07710 dB
15. 300 000 MHz
*
CH1 Markers
REF=1
BW 16. 527856 MHz
:
Cor
cent : 144. 962075 MHz
2
Q 8. 7708
:
1_loss : -28 . 743 dB
1
2
CH1 Markers
REF=1
BW 15. 761868 MHz
:
cent : 144. 976457 MHz
Q 9. 1979
:
1_loss : -28 . 582 dB
Cor
1
3
4
3
4
3
2
Cor
CH2 Markers
REF=2
mean: -28 . 559 dB
s. dev : . 10070 dB
p-p : . 53880 dB
START 117. 500 000 MHz
STOP 172. 500 000 MHz
CENTER 145. 000 000 MHz
SPAN 20. 000 000 MHz
3dB Bandwidth & Group Delay
CH1 S21
CH2 S21
LOG
DEL
1 dB/
100 ns/
REF -28.36 dB
REF 4.332 us
16 Mar 2010 21:05:03
1: 0. 0000 dB
0. 000 000 MHz
3:-14 . 648 ns
15. 300 000 MHz
CH1 S21
LOG
10 dB/
50dB Bandwidth
REF -28.51 dB
16 Mar 2010 21:04:14
1: 0. 0000 dB
0. 000 000 MHz
CH1 Markers
REF=1
BW 15. 936109 MHz
:
Cor
cent : 144. 974235 MHz
Q 9. 0972
:
1_loss : -28 . 582 dB
1
2
*
CH1 Markers
REF=1
BW 16. 795928 MHz
:
cent : 144. 966813 MHz
2
Q 8. 6311
:
1_loss : -28 . 743 dB
Cor
1
3
Smo
Cor
3
2
CH2 Markers
REF=2
4
mean: 4. 3459 us
s. dev : 8. 6462 ns
p-p : 43. 640 ns
3
4
CENTER 145. 000 000 MHz
SPAN 20. 000 000 MHz
START 117. 500 000 MHz
STOP 172. 500 000 MHz
Wideband properties
CH1 S21
LOG
10 dB/
REF -30.93 dB
16 Mar 2010 21:06:09
1: 0. 0000 dB
0. 000 000 MHz
CH1 S11
CH2 S22
SWR
SWR
2 /
2 /
SWR (S11&S22)
REF 1.867
REF 1.858
16 Mar 2010 21:05:37
1: 1. 8663
145. 000 000 MHz
2: 1. 8589
145. 000 000 MHz
CH1 Markers
REF=1
2:-64 . 893 dB
145. 000 MHz
3:-57 . 524 dB
290. 000 MHz
Cor
1
1
Cor
2
3
2
START . 010 000 MHz
STOP 500. 000 000 MHz
CENTER 145. 000 000 MHz
SPAN 55. 000 000 MHz
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
2011. 06. 27
Rev 1.0
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