All specifications are based on the test circuit on page 4
In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over
temperature
Electrical margin has been built into the design to account for the variations due to temperature drift and manufacturing tolerances
This is the optimum impedance in order to achieve the performance shown
Minimum
-
4
-
208.2
207.4
-
206.8
-
-
-
0.775
55
43
40
34
25
20
20
25
34
40
43
55
-
-
-
Typical
208
5.88
207.63
208.32
207.45
208.50
207.01
208.95
0.32
135
0.875
62
60
53
45
37
36
36
37
43
53
58
58
1.53
50
50
Maximum
-
7
207.8
-
-
208.6
-
Unit
MHz
dB
MHz
MHz
MHz
MHz
MHz
MHz
dB p-p
nsec
µsec
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
-
Ω
Ω
209.2
1
300
0.975
-
-
-
-
-
-
-
-
-
-
-
-
2.3
-
-
Subject to change or obsolescence without notice
Rev -
26-Jul-2005
Page 2 of 5
Preliminary Data Sheet
Part Number 856445
208 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev -
26-Jul-2005
Page 3 of 5
Preliminary Data Sheet
Actual matching values may vary due to PCB layout and parasitics
56nH
10
5
33nH
Part Number 856445
208 MHz SAW Filter
Matching Schematics
50
Ω
Single-ended
Input
50
Ω
Single-ended
Output
50Ω
39pF
1,2,3,4
6,7,8,9
39pF
50Ω
Marking
1.19
PCB Footprint
9.29
1.19
SAWTEK
856445
XXXXXX
ID Dot
Date Code
5.00
1.70
1.53
1.01
3.55
1.01
The date code consists of: day of the current year (Julian,
3 digits), last digit of the year (1 digit) and hour (2 digits)
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
2.7
16.8
Ø330
ID dot
0.3
2.0
4.0
Ø1.5
A
1.75
7.5
9.4
Ø102
Ø20.2
Ø13.0
16.0
2.0
Direction of travel
1.6
Section A-A
5.1
8.0
Ø1.5
A
Dimensions shown are nominal in millimeters
Packaging quantity: 4000 units/reel
Subject to change or obsolescence without notice
Rev -
26-Jul-2005
Page 4 of 5
Preliminary Data Sheet
Maximum Ratings
Parameter
Operating Temperature Range
Storage Temperature Range
Input Power
Part Number 856445
208 MHz SAW Filter
Symbol
T
T
stg
P
in
Minimum
-10
-40
-
Maximum
+85
+85
10
Unit
C
C
dBm
o
o
Important Notes
Warnings
•
•
•
•
Electrostatic Sensitive Device (ESD)
Avoid ultrasonic exposure
RoHS Compliance
This product complies with EU directive 2002/95/EC (RoHS)
Pb
Solderability
Compatible with JEDEC J-STD-020C
Pb-free
process,
260°C
peak reflow temperature
(see
soldering profile)
Links to Additional Technical Information
PCB Layout Tips
S-Parameters
Qualification Flowchart
RoHS information
Soldering Profile
Other Technical Information
Sawtek’s liability is limited only to the Surface Acoustic Wave (SAW) component(s) described in this data sheet. Sawtek does not accept any liability for
applications, processes, circuits or assemblies, which are implemented using any Sawtek component described in this data sheet.
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