China Electronics Technology Group Corporation
No.26 Research Institute
129.2MHz SAW Filter
6MHz Bandwidth
Part Number: LBT12902
www.sipatsaw.com
SIPAT Co., Ltd.
Specifications
Parameter
Center Frequency
Insertion Loss
1 dB Bandwidth
3 dB Bandwidth
35 dB Bandwidth
40 dB Bandwidth
45 dB Bandwidth
50 dB Bandwidth
55 dB Bandwidth
Passband Variation
Absolute Delay
Ultimate Rejection(f0±15MHz)
Material Temperature coefficient
Ambient Temperature
Package Size
Unit
MHz
dB
MHz
MHz
MHz
MHz
MHz
MHz
MHz
dB
usec
Minimum
129.1
-
-
6.15
-
-
-
-
-
-
-
60
Typical
129.2
27
5.96
6.19
6.91
6.95
6.99
7.02
7.1
1
3.85
70
-2.33
25
Maximum
129.3
28
-
-
7
-
7.4
8.2
16.2
1.5
4
-
dB
KHz/°C
°C
DIP3512 (35.2x12.7x5.2mm3)
Notes:
1. All specifications are based on the test circuit shown
2. In production, devices will be tested at room temperature to a guardbanded specification to ensure
electrical compliance over temperature
3. Electrical margin has been built into the design to account for the variations due to temperature drift
and manufacturing tolerances
4. This is the optimum impedance in order to achieve the performance show
Matching Configuration
INPUT
50
Ω
C1
L1
L2
L1=39nH
OUTPUT
50
Ω
C2
L2=47nH
C2=36pF
C1=47pF
Source/Load Impedance=50 ohm
Notes - Component values may change depending
on board layout.
SIPAT Co., Ltd.
( CETC No. 26 Research Institute )
Nanping Huayuan Road No. 14
Chongqing, China, 400060
Part Number
Rev. Date
Rev.
LBT12902
2006-8-30
1.0
Page
1/3
Phone: +86-23-62808818
Fax: +86-23-62805284
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
129.2MHz SAW Filter
6MHz Bandwidth
Part Number: LBT12902
www.sipatsaw.com
SIPAT Co., Ltd.
Package Dimension
35.00±0.5
12.80±0.5
0.35±0.05
2.54±0.2
25.40±0.2
2.54±0.2
Package:DIP3512
7.62±0.2
7.00
5.70
3
6
2
1
4
5
Unit:mm
Input
Output
Ground
1
5
2,3,4,6
Package: DIP3512
Unit: mm
SIPAT Co., Ltd.
( CETC No. 26 Research Institute )
Nanping Huayuan Road No. 14
Chongqing, China, 400060
Part Number
Rev. Date
Rev.
LBT12902
2006-8-30
1.0
Page
2/3
Phone: +86-23-62808818
Fax: +86-23-62805284
www.sipatsaw.com / sawmkt@sipat.com
China Electronics Technology Group Corporation
No.26 Research Institute
129.2MHz SAW Filter
6MHz Bandwidth
Part Number: LBT12902
www.sipatsaw.com
SIPAT Co., Ltd.
Typical Performance
Frequency Respond
-17.0518
-25
Passband Respond
-27.0518
-37.0518
-25.5
-47.0518
-26
-57.0518
-26.5
-67.0518
-27
-77.0518
-27.5
-87.0518
-28
-97.0518
-28.5
-107.0518
-29
-29.5
114.2
117.2
120.2
123.2
126.2
129.2
132.2
135.2
138.2
141.2
144.2
125
126
127
128
129
130
131
132
133
134
Group Delay Variation(f0±2.8MHz)
Phase Linearity(f0±2.8MHz)
Smith Chart S11
Smith Chart S22
SIPAT Co., Ltd.
( CETC No. 26 Research Institute )
Nanping Huayuan Road No. 14
Chongqing, China, 400060
Part Number
Rev. Date
Rev.
LBT12902
2006-8-30
1.0
Page
3/3
Phone: +86-23-62808818
Fax: +86-23-62805284
www.sipatsaw.com / sawmkt@sipat.com
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