All specifications are based on the test circuit shown below
This specification is valid for room temperature only
Electrical margin has been built into the design to account for the variations due to manufacturing tolerances
This is the optimum impedance in order to achieve the performance shown
Test Circuit:
Actual matching values may vary due to PCB layout and parasitics
4pF
3nH
9
3
3nH
50
Ω
Single-ended
50Ω
8pF
1,2,4,5,6
7,8,10,11,12
3pF
50Ω
Subject to change or obsolescence without notice
Rev -
07-Apr-2003
Page 2 of 5
Data Sheet
Part Number 855272
479.75 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev -
07-Apr-2003
Page 3 of 5
Data Sheet
Actual matching values may vary due to PCB layout and parasitics
4pF
3nH
9
3
Part Number 855272
479.75 MHz SAW Filter
Matching Schematics
3nH
50
Ω
Single-ended
50Ω
8pF
1,2,4,5,6
7,8,10,11,12
3pF
50Ω
Marking
1.34
PCB Footprint
.99
.28
1.34
.28
Date code
ID dot
SAWTEK
855272
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 -
07-Apr-2003
Page 4 of 5
Data Sheet
Parameter
Operating Temperature Range
Storage Temperature Range
Part Number 855272
479.75 MHz SAW Filter
Maximum Ratings
Symbol
T
T
stg
Minimum
-
-40
Typical
+25
+25
Maximum
-
+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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