305.0 MHz SAW Filter
Part Number
261802B
1. Features
Typical 1dB bandwidth of
18.5 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 (Fo±9.0MHz)
Group Delay Variation (Fo±9.0MHz)
Absolute Delay
Ultimate Rejection
Temperature Coefficient of Frequency
MHz
dB
MHz
MHz
MHz
dB
nsec
usec
dB
ppm/℃
℃
Minimum
-
-
18.4
-
-
-
-
-
45
Typical
305.0
25.5
18.52
18.96
20.91
0.6
35
2.06
52
-18
Maximum
-
27.0
-
-
21.1
1.2
70
-
-
-
-
D2012 Package Dimension
1
Input
50
Ω
Matching Schematic
5
L2
Output
50
Ω
12.7±0.5
5.5max 6.0max
7.6±0.2
2.5±0.2
L1
ITF 13A001
261802B
305-18.5M
0.45±0.05
20.3±0.5
2.5±0.2
C1
12.7±0.2
C2
L1 = 6.8nH , L2 = 6.8nH, C1 = 27pF, C2 = 20pF
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. 03. 27
Rev 1.0
ITF [ INTEGRATED TECHNOLOGY FUTURE ]
