All specifications are based on the matching schematic 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 manufacturing tolerances
Referenced to insertion loss at 549.5 MHz
Sliding aperture 2 MHz
This is the optimum impedance in order to achieve the performance shown
Subject to change or obsolescence without notice
Rev E
27-Aug-2002
Page 2 of 5
Data Sheet
Part Number 855959
549.5 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev E
27-Aug-2002
Page 3 of 5
Data Sheet
Test Circuit
Actual matching values may vary due to PCB layout and parasitics
4.7nH
10
4
Part Number 855959
549.5 MHz SAW Filter
7pF
50
Ω
Single-ended
50Ω
8pF
1,2,3,5,6
7,8,9,11,12
7pF
7pF
50Ω
Matching Schematics
Actual matching values may vary due to PCB layout and parasitics
15nH
10
4
16pF
50Ω
50
Ω
Single-ended
50Ω
9pF
1,2,3,5,6
7,8,9,11,12
Marking
1.34
PCB Footprint
.99
.28
1.34
.28
Date code
ID dot
SAWTEK
855959
XXXXXX
5.71
.99
7.21
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
7.3
16.0
Ø102
Direction of travel
Ø20.2
Ø13.0
2.0
2.2
Section A-A
5.8
8.0
Ø1.5
A
Dimensions shown are nominal in millimeters
Packaging quantity: 3000 units/reel
Subject to change or obsolescence without notice
Rev E
27-Aug-2002
Page 4 of 5
Data Sheet
Parameter
Operating Temperature Range
Storage Temperature Range
Part Number 855959
549.5 MHz SAW Filter
Maximum Ratings
Symbol
T
T
stg
Minimum
-10
-40
Maximum
+65
+85
Unit
o
o
C
C
Warnings
•
•
Electrostatic Sensitive Device (ESD)
Avoid ultrasonic exposure
Links to Additional Technical Information
PCB Layout Tips
S-Parameters
Qualification Flowchart
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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