251925B

145.0 MHz SAW Filter
Part Number 251925B
1. Features
Typical 1dB bandwidth of 19.3 MHz
High attenuation
Single Ended Operation
Dual In-line Package (DIP)
2. Electrical Specifications
Source and Load Impedance = 50Ω
Room Temperature : +25℃
℃
Minimum
Typical
Maximum
MHz
-
145.0
-
dB
-
26.5
28.0
1 dB Bandwidth
MHz
19.15
19.36
-
3dB Bandwidth
MHz
-
19.68
-
20dB Bandwidth
MHz
-
20.6
20.65
40dB Bandwidth
MHz
-
21.05
-
dB
-
1.1
1.5
Group Delay Variation (fo ± 9.4 MHz)
nsec
-
40
80
Absolute Delay
usec
-
2.08
-
dB
40
45
-
dBm
-
-
10
Center Frequency (fo)
Insertion Loss
Amplitude Ripple (fo ± 9.4 MHz)
Ultimate Rejection
Maximum input Power
ppm/℃
℃
Temperature Coefficient of Frequency
-72
5.5max 6.0max
5
1
L1
Input
50Ω
L2
C1
Output
50Ω
C2
12.7±0.2
2.5±0.2
7.6±0.2
0.45±0.05
ITF 13A001
251925B
140-19.3M
20.3±0.5
12.7±0.5
Matching Schematic
2.5±0.2
D2012 Package Dimension
L1 = 27nH, L2 = 27nH, C1 = 36pF, C2 = 27pF
Dimensions shown are nominal in millimeters
Pin Configuration
Base : Fe(SPCC), Au plating over Ni plated
Cap : Cu & Cr Alloy, Ni Plated
Termination : Kovar, Au Plated
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
Input
1
Ground
2,4
Output
5
Others
Ground
http://www.itf.co.kr
[email protected]
2013. 03. 27
Rev 1.0
145.0 MHz SAW Filter
Part Number 251925B
3. Typical Performance ( at +25℃
℃)
1dB Bandwidth & Ripple
CH1 S21
CH2 S21
LOG
LOG
1 dB/
1 dB/
40dB Bandwidth
26 Mar 2012 03:44:45
1: 0. 0000 dB
0. 000 000 MHz
3:- . 57970 dB
18. 800 000 MHz
REF -26.72 dB
REF -26.98 dB
CH1 S21
LOG
10 dB/
26 Mar 2012 03:40:22
1: 0. 0000 dB
0. 000 000 MHz
REF -26.72 dB
CH1 Markers
REF=1
BW: 19. 365416 MHz
cent : 145 . 073145 MHz
Cor
cent : 145 . 093891 MHz
Q: 7. 4914
1
CH1 Markers
REF=1
BW: 21. 055785 MHz
1
Cor
2
Q: 6. 8909
1_loss : -26 . 566 dB
1_loss : -26 . 684 dB
2
3
4
3
2
CH2 Markers
REF=2
mean:-26 . 589 dB
Cor
3
4
s. dev : . 24960 dB
p-p : 1. 1227 dB
CENTER 145 . 000 000 MHz
SPAN 24. 000 000 MHz
CENTER 145 . 000 000 MHz
3dB Bandwidth & Group Delay
CH1 S21
CH2 S21
LOG
DEL
1 dB/
50 ns/
20dB Bandwidth
26 Mar 2012 03:45:01
1: 0. 0000 dB
0. 000 000 MHz
3: 4. 5779 ns
18. 800 000 MHz
REF -26.72 dB
REF 2.119 us
SPAN 70. 000 000 MHz
CH1 S21
LOG
10 dB/
26 Mar 2012 03:41:45
1: 0. 0000 dB
0. 000 000 MHz
REF -26.72 dB
CH1 Markers
REF=1
BW: 19. 688645 MHz
cent : 145 . 087998 MHz
Cor
cent : 145 . 094359 MHz
Q: 7. 3691
1
CH1 Markers
REF=1
BW: 20. 602724 MHz
1
Cor
2
Q: 7. 0425
1_loss : -26 . 552 dB
1_loss : -26 . 684 dB
2
3
4
3
Smo
3
CH2
4 Markers
REF=2
mean: 2. 0875 us
2
Cor
s. dev : 6. 9789 ns
p-p : 33. 061 ns
CENTER 145 . 000 000 MHz
SPAN 24. 000 000 MHz
CENTER 145 . 000 000 MHz
Wideband Properties
CH1 S21
LOG
10 dB/
SWR(S11 & S22)
26 Mar 2012 03:47:34
1: 0. 0000 dB
0. 000 000 MHz
REF -28.67 dB
SPAN 70. 000 000 MHz
CH1 Markers
REF=1
2:-69 . 204 dB
145. 000 MHz
CH1 S11
CH2 S22
SWR
SWR
10 /
10 /
26 Mar 2012 03:46:12
1: 7. 3523
145 . 000 000 MHz
2: 7. 1289
145 . 000 000 MHz
REF 7.35
REF 7.131
Cor
3:-67 . 398 dB
290. 000 MHz
1
1
Cor
START
. 010 000 MHz
2
3
STOP
600 . 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
2
CENTER 145 . 000 000 MHz
http://www.itf.co.kr
SPAN 70. 000 000 MHz
[email protected]
2013. 03. 27
Rev 1.0
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