HDQSF45A7DC Datasheet, PDF (5/11 Pages) Shoulder Electronics Limited. – SAW FILTER

SAW FILTER
HDQSF45A7Dc SIP5Dc
Reflected wave signal suppression
1.3 us … 6.0 us after main pulse
(test pulse 250 ns ,
42.0
52.0
carrier frequency 44.06 MHz)
Feedthrough signal suppression
1.3 us … 1.2 us before main pulse
(test pulse 250 ns ,
56.0
carrier frequency 44.06 MHz)
Group delay predistortion
(reference frequency 45.81 MHz)
43.26MHz
42.23MHz
-40
0
Temperature coefficient
-72
dB
dB
ns
ns
ppm/k
Characteristics of sound channel
Source impedance
Zs=50Ω
Load impedance
Z_L=2kΩ//3pF
Freq
Insertion attenuation
Reference level
41.31MHz
42.23MHz
Relative attenuation
45.81MHz
39.81MHz
47.31MHz
Sidelobe
35.06~39.81MHz
47.31~55.06MHz
Temperature coefficient
min
9.9
23.0
38.0
35.0
40.0
35.0
34.0
typ
11.4
32.0
45.0
41.0
43.0
40.0
39.0
-72
T_A=25℃
max
12.9
dB
- dB
- dB
- dB
- dB
dB
dB
ppm/K
3.3 Environmental Performance Characteristics
Item
Condition
High
The specimen shall be store at a temperature of
temperature 80±2℃ for 96±4h. Then it shall be subjected to
standard atmospheric conditions for 1h, after
which measurement shall be made within 1h.
Low
The specimen shall be store at a temperature of
temperature -20±3℃ for 96±4h. Then it shall be subjected to
standard atmospheric conditions for 1h, after
which measurement shall be made within 1h.
Humidity
The specimen shall be store at a temperature of
40±2℃ with relative humidity of 90% to 96%
for 96±4h. Then it shall be subjected to standard
atmospheric conditions for 1h, after which
Specifications
Mechanical
characteristics and
specifications in
electrical
characteristics shall
be satisfied. There
shall be no
excessive change in
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