All specifications are based on the test circuit shown below
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
All attenuation measurements are measured relative to minimum insertion loss
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
220nH
7pF 820nH
10
5
50Ω
1,2,3,4
6,7,8,9
50
Ω
Single-ended
50Ω
Subject to change or obsolescence without notice
Rev B
27-Oct-2005
Page 2 of 5
Data Sheet
Part Number 855737
70 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev B
27-Oct-2005
Page 3 of 5
Data Sheet
Matching Schematic
220nH
Part Number 855737
70 MHz SAW Filter
7pF 820nH
10
5
50Ω
1,2,3,4
6,7,8,9
50
Ω
Single-ended
50Ω
Marking
PCB Footprint
8.84
SAWTEK
855737
XXXXXX
ID dot
Date code
1.95
1.22
.69
9.19
Date code is the day of the current year in Julian format, last digit
of the year, and hour of the day
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
4.0
Tape and Reel
2.7
44.8
Ø330
ID dot
0.36
2.0
Ø1.5
A
1.75
20.2
40.4
25.6
44.0
Ø102
Ø20.2
Ø13.0
2.0
Direction of travel
0.20
2.6
Section A-A
9.39
12.0
R0.75
Ø1.5
A
Dimensions shown are nominal in millimeters
Packaging quantity: 1000 units/reel
Subject to change or obsolescence without notice
Rev B
27-Oct-2005
Page 4 of 5
Data Sheet
Maximum Ratings
Parameter
Operating Temperature Range
Storage Temperature Range
Part Number 855737
70 MHz SAW Filter
Symbol
T
T
stg
Minimum
0
-40
Maximum
+70
+85
Unit
o
o
C
C
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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