Data Sheet
Part Number 855399
350 MHz SAW Filter
Features
For fixed wireless applications
Usable bandwidth of 2.6 MHz
High attenuation
Single-ended or balanced operation
Ceramic Surface Mount Package (SMP)
Small size
Package
Pin Configuration
Surface Mount 13.30 x 6.50 x 1.75 mm
Bottom View
12
11
10
9
8
7
6
5
4
3
2
1
Pin
No.
Description
5
Output
6
Output
return
11
Input
12
Input
return
1,2,3,4
Case
ground
7,8,9,10
Case
ground
1.75 NOM.
1.96 MAX.
0.76
0.79
1.17 x 3.76
1.50
2.54
6.50
2.18
2.54
13.3
Dimensions shown are nominal in millimeters
All tolerances are
0.15mm except overall
length and width
0.10mm
Body: Al
2
O
3
ceramic
Lid: Kovar, Ni plated
Terminations: Au plating 0.5 - 1.0
m,
over a 2 - 6
m Ni plating
Subject to change or obsolescence without notice
Rev A
15-Jan-2003
Page 1 of 5
Data Sheet
Part Number 855399
350 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature:
(2)
+25
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency @ 3dB
349.9 350 350.1
MHz
Insertion Loss at 350 MHz
- 13.7 15
dB
0.5 dB Bandwidth
(4)
1.7 1.97 -
MHz
3 dB Bandwidth
(4)
2.6 2.62 -
MHz
20 dB Bandwidth
(4)
- 3.82 4
MHz
45 dB Bandwidth
(4)
- 4.4 6
MHz
Group Delay Variation
348.9
-
351.1
MHz
-
30
70
nsec
Source Impedance
(5)
- 50 -
Load Impedance
(5)
- 50 -
Substrate Material
- Quartz
- -
Temperature Coefficient of Frequency
-
F/F=-[(T-T
0
)/5.4]
2
- ppm/
o
C
Notes:
1. All specifications are based on the test circuit shown below
2. This specification is valid for room temperature only
3. Electrical margin has been built into the design to account for the variations due to manufacturing tolerances
4. Relative to insertion loss at 350MHz
5. 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
50
Single-ended
1,2,3,4,6
7,8,9,10,12
50
18pF
27nH
18pF
11
5
27nH
50
Subject to change or obsolescence without notice
Rev A
15-Jan-2003
Page 2 of 5
Data Sheet
Part Number 855399
350 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev A
15-Jan-2003
Page 3 of 5
Data Sheet
Part Number 855399
350 MHz SAW Filter
Matching Schematics
Actual matching values may vary due to PCB layout and parasitics
50
Single-ended
1,2,3,4,6
7,8,9,10,12
50
18pF
27nH
18pF
11
5
27nH
50
Marking
PCB Footprint
XXXXXX
Date Code
ID Dot
SAWTEK
855399
1.70
13.51
.99
1.55
8.61
3.53
.99
1.70
6.70
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
A
A
24
1.75
11.5
1.5
2.3
13.9
4.0
1.5
2.0
0.3
12.0
7.1
Section A-A
Dimensions shown are nominal in millimeters
Packaging quantity: 2000 units/reel
Direction of travel
330
24.8
2.7
102
13.0
20.2
2.0
ID dot
Subject to change or obsolescence without notice
Rev A
15-Jan-2003
Page 4 of 5
Data Sheet
Part Number 855399
350 MHz SAW Filter
Maximum Ratings
Parameter
Symbol Minimum
Typical
Maximum
Unit
Operating Temperature Range
T
-
+25
-
o
C
Warnings
Electrostatic Sensitive Device (ESD)
Avoid ultrasonic exposure
Links to Additional Technical Information
PCB Layout Tips
Qualification Flowchart
S-Parameters
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.
Contact Information
PO Box 609501
Orlando, FL 32860-9501
USA
Phone: +1 (407) 886-8860
Fax: +1 (407) 886-7061
Email:
custservice@sawtek.com
Web:
www.sawtek.com
Or contact one of our worldwide
network of
sales offices,
representatives or distributors
Soldering Profile
Other Technical Information
Subject to change or obsolescence without notice
Rev A
15-Jan-2003
Page 5 of 5
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