120.0 MHz SAW Filter
Part Number
251851B
1. Features
Typical 1dB bandwidth of 18.2 MHz
High attenuation
Single Ended Operation
Surface Mounted Package (SMD)
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 ± 8.77 MHz)
Group Delay Variation (fo ± 8.77 MHz)
Absolute Delay
Ultimate Rejection
Temperature Coefficient of Frequency
MHz
dB
MHz
MHz
MHz
dB
nsec
usec
dB
ppm/℃
℃
Minimum
-
-
18.05
-
-
-
-
-
50
Typical
120.0
24.0
18.2
18.7
20.65
0.5
35
1.55
55
-72
Maximum
-
25.5
-
-
20.85
1.0
80
-
-
-
-
S1365 Package Dimension
Matching Schematic
13.30±0.2
10
9
8
7
7
7.62±0.1
8
9
10
56nH
Input
50
Ω
11
5
56nH
Output
50
Ω
6.50±0.2
11
12
1.61±0.2
2.54±0.1
ITF 11A001
251851B
。
120-18.2M
1
2
3
4
6
6
1.50±0.1
11
56pF
7pF
5
5
12
4
3
2
2.54±0.1
1
0.80±0.1
Pin Configuration
Dimensions shown are nominal in millimeters
Body : Al
2
O
3
Lid : Kovar, Ni Plated
Termination : Au plating 0.3 ~ 1.0um, over a 1.27 ~ 8.89um Ni Plating
Input
Output
11
5
Ground
Others
6,12
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. 01.24
Rev 1.0
120.0 MHz SAW Filter
Part Number
251851B
3. Typical Performance ( at +25℃ )
℃
1dB Bandwidth & Ripple
15 Dec 2009 10:08:43
3dB Bandwidth & Group Delay
15 Dec 2009 10:09:11
CH1 S21
CH2 S21
LOG
LOG
1 dB/ REF -23.54 dB
1 dB/ REF -23.98 dB
1: 0. 0000 dB
3:-. 06570 dB
0. 000 000 MHz
17. 540 000 MHz
CH1 S21
CH2 S21
LOG
DEL
1 dB/ REF -23.54 dB
100 ns/ REF 1.512 us
1: 0. 0000 dB
3: 15. 397 ns
0. 000 000 MHz
17. 540 000 MHz
CH1 Markers
REF=1
BW 18. 209262 MHz
:
Cor
cent : 120. 045635 MHz
Q 6. 5926
:
1
2
1_loss : -23 . 711 dB
1
2
Cor
CH1 Markers
REF=1
BW 18. 699537 MHz
:
cent : 120. 063146 MHz
Q 6. 4206
:
1_loss : -23 . 708 dB
3
4
3
3
2
Cor
CH2 Markers
REF=2
mean:-23 . 739 dB
s. dev : . 09720 dB
p-p : . 47420 dB
Smo
Cor
3
2
CH2 Markers
REF=2
4
mean: 1. 5514 us
s. dev : 6. 6856 ns
p-p : 34. 055 ns
START 109. 000 000 MHz
STOP 131. 000 000 MHz
CENTER 120. 000 000 MHz
SPAN 22. 000 000 MHz
40dB Bandwidth
15 Dec 2009 10:07:33
Smith Chart
15 Dec 2009 10:10:18
CH1 S21
LOG
10 dB/
REF -23.78 dB
1: 0. 0000 dB
0. 000 000 MHz
CH1 S11
CH2 S22
1 U FS
1 U FS
1: 3. 3650
2: 13. 017
-7 . 7100
-15 . 467
172. 02 pF
85. 748 pF
120. 000 000 MHz
120. 000 000 MHz
*
CH1 Markers
REF=1
BW 20. 649804 MHz
:
Cor
cent : 120. 063728 MHz
2
Q 5. 8143
:
1_loss : -23 . 737 dB
1
Cor
1
3
4
Cor
2
START 87. 500 000 MHz
STOP 152. 500 000 MHz
CENTER 120. 000 000 MHz
SPAN 65. 000 000 MHz
Wide band Properties
15 Dec 2009 10:11:25
SWR(S11 & S22)
15 Dec 2009 10:10:09
CH1 S21
LOG
10 dB/
REF -22.69 dB
1: 0. 0000 dB
0. 000 000 MHz
CH1 S11
CH2 S22
SWR
SWR
20 /
20 /
REF 15.27
REF 4.224
1: 15. 229
2: 4. 2278
120. 000 000 MHz
120. 000 000 MHz
CH1 Markers
REF=1
2:-73 . 087 dB
120. 000 MHz
3:-71 . 536 dB
240. 000 MHz
Cor
1
1
Cor
2
START . 010 000 MHz
2
STOP 400. 000 000 MHz
3
CENTER 120. 000 000 MHz
SPAN 65. 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. 01.24
Rev 1.0
Microcontroller MCU
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