251212B

140 MHz SAW Filter
Part Number 251212B
1. Features

Typical 2dB bandwidth of 12.22 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
139.85
140.0
140.15
dB
-
27.7
29.2
2dB Bandwidth
MHz
12.0
12.22
-
25dB Bandwidth
MHz
-
13.0
13.1
40dB Bandwidth
MHz
-
13.2
13.4
dB
-
0.6
1.0
Group Delay Variation (fo ± 5.75 MHz)
nsec
-
55
120
Absolute Delay
usec
-
3.98
4.0
dB
50
55
-
ppm/℃
-
-72
-
Center Frequency (fo)
Insertion Loss
Amplitude Ripple (fo ± 5.75 MHz)
Ultimate Rejection
Temperature Coefficient of Frequency
* Input POWER : +10dBm
12.8±0.5
5.5max 6.0max
Matching Schematic
7.6±0.2
2.5±0.2
D3512 Package Dimension
L1
1
5
C2
Output
50Ω
L2
25.4±0.2
2.5±0.2
C1
0.45±0.05
ITF 15A001
251212B
140-12.2M
35.1±0.5
I nput
50Ω
C1 = 56pF, L1 = 33nH, C2 = 390pF, L2 = 18nH
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
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]
2015. 09. 23
Rev 1.0
140 MHz SAW Filter
Part Number 251212B
3. Typical Performance ( at +25℃ )
2dB Bandwidth & Ripple
CH2
CH4
S21
S21
LOG
LOG
1 dB/
1 dB/
25dB & 40dB Bandwidth
23 Sep 2015 18:31:43
1: 0. 0000 dB
0. 000 000 MHz
3: . 01570 dB
11 . 500 000 MHz
REF -27.5 dB
REF -27.5 dB
CH1
CH3
S21
S21
LOG
LOG
10 dB/
10 dB/
23 Sep 2015 18:30:24
1: 0. 0000 dB
0. 000 000 MHz
1: 0. 0000 dB
0. 000 000 MHz
REF -27.5 dB
REF -27.5 dB
CH2 Markers
REF=1
12 . 215930 MHz
BW:
cent : 139 . 985741
MHz
BW:
C
cent : 139 . 981910
1
Q: 11 . 459
MHz
Q: 10 . 790
2
1_loss : -27 . 904 dB
CH1 Markers
REF=1
12 . 973537 MHz
1_loss : -28 . 077 dB
C
1
2
3
3
2
3
4
3
4
4
CH4 Markers
REF=2
mean : -27 . 900 dB
Cor
s. dev : . 08550
dB
p-p : . 47230
dB
BW:
cent : 139 . 978727
MHz
Q: 10 . 633
Cor
1_loss : -28 . 077 dB
CENTER 140 . 000 000 MHz
SPAN
15 . 000 000 MHz
2
4
CENTER 140 . 000 000 MHz
3dB Bandwidth & Group Delay
CH2
CH4
CH3 Markers
REF=1
13 . 164375 MHz
S21
S21
LOG
DEL
1 dB/
100 ns/
BW:
40 . 000 000 MHz
Smith Chart(S11 & S22)
23 Sep 2015 18:31:28
1: 0. 0000 dB
0. 000 000 MHz
3: -8 . 9522 ns
11 . 500 000 MHz
REF -27.5 dB
REF 3.95 us
SPAN
CH1 S11
CH3 S22
1 U FS
1 U FS
1: 51. 975
2: 48. 693
23 Sep 2015 18:32:24
-750 . 00 m 1. 5158 nF
140. 000 000 MHz
16. 570
18. 837 nH
140. 000 000 MHz
CH2 Markers
REF=1
12 . 301997 MHz
cent : 139 . 985136
MHz
Cor
Q: 11 . 379
1_loss : -27 . 915 dB
Cor
1
2
2
3
1
2
Cor
CH4 Markers
REF=2
mean : 3. 9865 us
4
s. dev : 10 . 167 ns
3
Smo
p-p : 53 . 304 ns
Cor
CENTER 140 . 000 000 MHz
SPAN
15 . 000 000 MHz
2
4
START 120. 000 000 MHz
Wide band Properties
CH1
S21
LOG
10 dB/
REF -27.5 dB
STOP 160. 000 000 MHz
SWR(S11 & S22)
23 Sep 2015 18:34:49
1: -28 . 069 dB
140 . 000 000 MHz
1
CH1
CH3
S11
S22
SWR
SWR
1 /
1 /
23 Sep 2015 18:32:47
1: 1. 0424
140 . 000 000 MHz
2: 1. 3972
140 . 000 000 MHz
REF 0
REF 0
Cor
Cor
1
2
START
. 010 000 MHz
STOP 400 . 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
START 120 . 000 000 MHz
http://www.itf.co.kr
STOP 160 . 000 000 MHz
[email protected]
2015. 09. 23
Rev 1.0
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