155.0 MHz SAW Filter
Part Number
251929B
1. Features
Typical 1dB bandwidth of
19.4 MHz
High attenuation
Single Ended Operation
Dual In-line Package (DIP)
2. Electrical Specifications
Source and Load Impedance = 50
Room Temperature : +25℃
℃
Center Frequency (fo)
Insertion Loss
1dB Bandwidth
3dB Bandwidth
40dB Bandwidth
Amplitude Ripple
Group Delay Variation
Absolute Delay
Ultimate Rejection
Temperature Coefficient of Frequency
MHz
dB
MHz
MHz
MHz
dB
nsec
usec
dB
ppm/℃
℃
Minimum
-
-
19.3
-
-
-
-
-
50
Typical
155.0
24.0
19.48
19.86
21.57
0.6
30
1.71
55
-72
Maximum
-
25.5
-
-
21.9
1.0
80
-
-
-
-
D2012 Package Dimension
1
Input
50
Ω
Matching Schematic
5
L2
C1
12.7±0.2
12.7±0.5
5.5max 6.0max
7.6±0.2
2.5±0.2
L1
Output
50
Ω
ITF 13A001
251929B
155-19.4M
0.45±0.05
20.3±0.5
2.5±0.2
L1 = 33nH, L2 = 22nH, C1 = 39pF
Dimensions shown are nominal in millimeters
Base : Fe(SPCC), Au plating over Ni plated
Cap : Cu & Cr Alloy, Ni Plated
Termination : Kovar, Au Plated
Pin Configuration
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
2013. 04. 01
Rev 1.0
155.0 MHz SAW Filter
Part Number
251929B
3. Typical Performance ( at +25℃ )
℃
1dB Bandwidth & Ripple
10 Sep 2012 22:51:47
CH2
CH4
S21
S21
LOG
LOG
1 dB/
1 dB/
REF -23.51 dB
REF -24.13 dB
1 : 0 . 0000
3 : - . 12160
dB
dB
0 . 000
18 . 600
000
000
MHz
MHz
CH1
S21
LOG
10 dB/
REF -24.03 dB
40dB Bandwidth
10 Sep 2012 22:49:28
1 : 0 . 0000
dB
0 . 000
000
MHz
BW :
cent
:
CH2 Markers
REF=1
19 . 480592
MHz
1
154 . 795170
MHz
Cor
cent
Q: 7 . 9461
2
:
BW :
CH1 Markers
REF=1
21 . 570857
MHz
154 . 747682
MHz
Q: 7 . 1739
1_ loss
1
: -23
. 919
dB
1_ loss
: -23
. 973
dB
2
3
3
4
2
CH4
Cor
mean
s . dev
p-p
Cor
: -23
Markers
REF=2
. 916
dB
dB
dB
3
4
: . 10720
: . 62720
4
2
CENTER
155 . 000
000
MHz
SPAN
24 . 000
000
MHz
CENTER
155 . 000
000
MHz
SPAN
70 . 000
000
MHz
3dB Bandwidth & Group Delay
10 Sep 2012 22:52:01
CH2
CH4
S21
S21
LOG
DEL
1 dB/
300 ns/
REF -23.51 dB
REF 1.685 us
1 : 0 . 0000
3 : -34 . 332
dB
ns
0 . 000
18 . 600
000
000
MHz
MHz
CH1
CH3
S11
S22
1 U FS
1 U FS
Smith Chart
10 Sep 2012 22:50:29
1 : 11 . 427
2 : 5 . 9275
12 . 440
-3 . 1926
12 . 774
nH
321 . 62 pF
155 . 000
155 . 000
000
000
MHz
MHz
BW :
cent
:
CH2 Markers
REF=1
19 . 863530
MHz
154 . 790191
MHz
Cor
Q: 7 . 7927
1_ loss
1
: -23
. 911
dB
Cor
1
2
4
2
3
CH4
mean
s . dev
p-p
Cor
Markers
REF=2
: 1 . 7170
us
4
: 7 . 5990
: 46 . 539
ns
ns
2
Cor
3
Smo
2
CENTER
155 . 000
000
MHz
SPAN
24 . 000
000
MHz
CENTER
155 . 000
000
MHz
SPAN
70 . 000
000
MHz
Wideband Properties
10 Sep 2012 22:53:17
CH1
S21
LOG
10 dB/
REF -25.71 dB
1 : -25
. 812
dB
155 . 000
000
MHz
CH1
CH3
S11
S22
SWR
SWR
5 /
5 /
SWR(S11 & S22)
10 Sep 2012 22:50:14
REF 4.666
REF 8.469
1 : 4 . 6663
2 : 8 . 4580
155 . 000
155 . 000
000
000
MHz
MHz
Cor
1
Cor
1
2
START
. 010
000
MHz
STOP
600 . 000
000
MHz
CENTER
155 . 000
000
MHz
SPAN
70 . 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
2013. 04. 01
Rev 1.0
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