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ETC |
1.SCOPE
SAW filter series have broad line up products meeting all broadcast standard
including NTSC,PAL and SECAM systems. These filters are composed of two
interdigital transducers on a single-crystal. piezoelectrical chip. They are used in
electronic equipments such as TV and so on.
2.Construction
2.1 Dimension and materials
Type: BF43A4M
0: year(0,1,2,3,4,5,6,7,8,9)
B:product in this quarter(A:1~3,B:4~6,C:7~9,D:10~12)
3.Characteristics
Standard atmospheric conditions
Unless otherwise specified , the standard rang of atmospheric conditions for making
measurements and tests is as follows;
Ambient temperature : 15 to 35
Relative humidity : 25% to 85%
Air pressure
: 86kPa to 106kPa
Operating temperature rang
Operating temperature rang is the rang of ambient temperatures in which the filter
can be
operated continuously. -10 ~ +60
Storage temperature rang
Storage temperature rang is the rang of ambient temperatures at which the filter can
be stored
without damage.
Conditions are as specified elsewhere in these specifications. -40 ~ +70
Reference temperature
+25
3.1 Maximum Rating
DC voltage
AC voltage
VDC
Vpp
12
10
V Between any terminals
V Between any terminals
3.2 Electrical Characteristics
Source impedance
Zs=50
Load impedance
ZL=2k//3pF
Item Freq min
Center frequency Fo -
Insertion attenuation
Reference level
43.00MHz
-
Pass bandwidth
Relative attenuation
B3dB
B30dB
39.25
46.75
5.8
-
33.0
33.0
Sidelobe
30.00~39.00MHz
47.00~50.00MHz
35.0
35.0
Temperature coefficient
typ
43.00
-
6.0
7.6
48.0
50.0
40.0
40.0
-72
T A=25
max
- MHz
20.0 dB
- MHz
8.0 MHz
dB
dB
dB
dB
ppm/k
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