PHILIPS WFA18B0037KB

SAW Device
NEW
IF SAW Filter for Digital Terrestrial Broadcasting Mini-satellite For Industrial Use
n Features
l Compact.
l With a low-band ripple.
l Excellent steepness characteristics.
Pb
Free
n Specifications
Model
WFA18B0037KB
Item
min.
typ.
Nominal frequency : f0 (MHz)
max.
37.15
Minimum loss : IL (dB)
−
27.8
33
−2.79
1 dB bandwidth :
Lower (MHz)
−
−2.91
(Minimum loss) :
Upper (MHz)
+2.79
+2.91
−
−
0.5
1.0
In-band deviation (Max. f0±2.79 MHz)(dB)
Guaranteed attenuation
f0−15 to f0−3.2 MHz (dB)
30
33
−
(Minimum loss standard)
f0+3.2 to f0+15 MHz (dB)
30
33
−
Operating temperature range (°C)
−10 to +60
Terminating impedance (Ω)
50 (with matching)
n Dimensions
n Characteristics
mm
PAD NO.
CONNECTION
GND
1
INPUT
3
OUTPUT
1.000 dB/
0.5±0.3
5.0–φ0.45±0.1
45.5max.
43.0±0.5
CH1
5
12.5max.
7.5±0.3
10.0±0.5
CENTER(MHz) 37.1500
SPAN(MHz) 10.000
3.75±0.3
35.0±0.3
3
5.5±0.75
9.0max.
Others
[In-band characteristics]
CH1 A/R LOG MAG
REF -27.816 dB
2
1
4
[Out-of-band characteristics]
CH2 A/R LOG MAG
REF -27.804 dB
10.000 dB/
n Matching Circuit
IN
1
Ls2
3
OUT
SAW
50Ω
Lp1
Cp1
50Ω
CH2
CENTER(MHz) 37.1500
SPAN(MHz) 50.000
sa21_080825_WFA18B0037KB_e