140.0 MHz SAW Filter
Part Number 251920B
1. Features
ꢀ
ꢀ
ꢀ
ꢀ
Typical 1dB bandwidth of 19.79 MHz
High attenuation
Single Ended Operation
Dual Inꢀline Package (DIP)
2. Electrical Specifications
Source and Load Impedance = 50ꢁ
Operating Temperature : +25℃
Minimum
Typical
140.0
25.5
19.79
20.57
20.75
0.7
Maximum
Center Frequency (fo)
Insertion Loss
MHz
dB
ꢀ
ꢀ
27.0
19.85
20.65
ꢀ
ꢀ
2dB Bandwidth
MHz
MHz
MHz
dB
19.75
25dB Bandwidth
ꢀ
ꢀ
40dB Bandwidth
Amplitude Ripple (fo ± 9.65 MHz)
Group Delay Variation (fo ± 9.65 MHz)
Absolute Delay
ꢀ
1.0
150
ꢀ
nsec
usec
dB
ꢀ
60
ꢀ
2.92
50
Ultimate Rejection
45
ꢀ
ꢀ
Temperature Coefficient of Frequency
ppm/℃
ꢀ84
ꢀ
D3512 Package Dimension
Matching Schematic
12.8±0.5
5.5max 6.0max
7.6±0.2
39nH
39nH
1
5
Input
Output
50
Ω
50
Ω
22pF
22pF
Pin Configuration
Dimensions shown are nominal in millimeters
Input
Output
1
5
Ground
Others
2,4
Ground
Base : Fe(SPCC), Au plating over Ni plated
Cap : Cu & Cr Alloy, Ni Plated
Termination : Kovar, Au Plated
I T F Co., Ltd.
102ꢀ901, Bucheon Technopark 364, SamjeongꢀDong,
OjeongꢀGu, BucheonꢀCity,
Tel: 82-32-621-1213
Fax: 82-32-621-1218
http://www.itf.co.kr
sales@itf.co.kr
2010. 09.14
Rev 1.0
GyounggiꢀDo, Korea 421ꢀ809