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Phone: + 86-23-62808818 Fax: + 86-23-62805284 www.sipatsaw.com / sawmkt@sipat.com
Part Number
LBT12902
Rev. Date
2006-8-30
SIPAT Co., Ltd.
( CETC No. 26 Research Institute )
Nanping Huayuan Road No. 14
Chongqing, China, 400060
Rev.
1.0
Page 1/3
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129.2MHz SAW Filter
6MHz Bandwidth
Part Number: LBT12902
Specifications
Parameter
Unit
Minimum
Typical
Maximum
Center Frequency
Insertion Loss
MHz
129.1
129.2
129.3
dB
-
27
28
1 dB Bandwidth
MHz
-
5.96
-
3 dB Bandwidth
MHz
6.15
6.19
-
35 dB Bandwidth
MHz
-
6.91
7
40 dB Bandwidth
MHz
-
6.95
-
45 dB Bandwidth
MHz
-
6.99
7.4
50 dB Bandwidth
MHz
-
7.02
8.2
55 dB Bandwidth
Passband Variation
MHz
-
7.1
16.2
dB
-
1
1.5
Absolute Delay
usec
-
3.85
4
Ultimate Rejection(f0±15MHz)
dB
60
70
-
Material Temperature coefficient
KHz/°C
-2.33
Ambient Temperature
°C
25
Package Size
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
L1= 39nH L2= 47nH
C1= 47pF C2= 36pF
Source/ Load I mpedance= 50 ohm
Notes - Component values may change depending
on board layout.
C1
INPUT
50
Ω
OUTPUT
50
Ω
L1
L2
C2