Data Sheet
Part Number 856055
942.5 MHz SAW Filter
Subject to change or obsolescence without notice
Rev C
04-Sep-2002
Page 1 of 5
Features
For EGSM applications
Usable bandwidth 35 MHz
High attenuation
No impedance matching required for operation
at 50
Single-ended operation
Ceramic Surface Mount Package (SMP)
Small size
Package
Pin Configuration
Surface Mount 2.50 x 2.00 x 0.76 mm
Bottom View
3
4
2
1
Pin No.
Description
1
Input
3
Output
2,4
Case
ground
0.3X45
CHAMFER
0.84
1.54
0.58
1.30
2.00
2.50
0.76 NOM.
0.84 MAX.
Dimensions shown are nominal in millimeters
All tolerances are
0.10mm
Body: Al
2
O
3
ceramic
Lid: Kovar or Alloy 42, Au over Ni plated
Terminations: Au plating 0.5 - 1.0
m,
over a 2 - 6
m Ni plating
Data Sheet
Part Number 856055
942.5 MHz SAW Filter
Subject to change or obsolescence without notice
Rev C
04-Sep-2002
Page 2 of 5
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-20 to +70
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 942.5 -
MHz
Maximum Insertion Loss
925
-
960
MHz
925
-
960
MHz
(+15 to +35
o
C)
( -20 to +70
o
C)
-
-
2.0
3.5
3.5
3.9
dB
dB
Absolute Attenuation
0
-
880
MHz
880
-
905
MHz
905
-
915
MHz
980
-
982
MHz
982
-
1005
MHz
1005
-
1035
MHz
1035
-
1760
MHz
1760
-
2500
MHz
2500
-
3120
MHz
3120
-
4000
MHz
45
31
15
20
23
35
40
30
20
15
50
48
30
27
30
43
47
32
30
30
-
-
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Input/Output Return Loss
925
-
960
MHz
8
13
-
dB
Source Impedance
(4)
- 50 -
Load Impedance
(4)
- 50 -
Notes:
1. All specifications are based on the test circuit shown below
2. In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over
temperature
3. Electrical margin has been built into the design to account for the variations due to temperature drift and manufacturing tolerances
4. This is the optimum impedance in order to achieve the performance shown
Test Circuit:
50
Single-ended
2,4
1
3
50
50
No impedance matching
required
Data Sheet
Part Number 856055
942.5 MHz SAW Filter
Subject to change or obsolescence without notice
Rev C
04-Sep-2002
Page 3 of 5
Typical Performance
(at +25
o
C)
Data Sheet
Part Number 856055
942.5 MHz SAW Filter
Subject to change or obsolescence without notice
Rev C
04-Sep-2002
Page 4 of 5
Matching Schematics
50
Single-ended
2,4
1
3
50
50
No impedance matching
required
Marking
PCB Footprint
Sawtek
logo
code
Marking
Date code
ID dot
JJJYM
E
.51
.51
1.04
.78
2.59
CHAMFER
.36x45
2.08
The date code consists of: JJJ = Julian day,
Y = last digit of year, M = manufacturing site code
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
1.75
3.5 8.0
A
A
2.0
4.0
4.0
1.0
1.5
2.75
1.1
0.3
Section A-A
2.23
2.7
8.8
330
102
20.2
13.0
2.0
ID dot
Direction of travel
Sawtek
logo
Dimensions shown are nominal in millimeters
Packaging quantity: 10000 units/reel
Data Sheet
Part Number 856055
942.5 MHz SAW Filter
Subject to change or obsolescence without notice
Rev C
04-Sep-2002
Page 5 of 5
Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Unit
Operating Temperature Range
T
-20
+70
o
C
Storage Temperature Range
T
stg
-40 +85
o
C
Warnings
Electrostatic Sensitive Device (ESD)
Avoid ultrasonic exposure
Links to Additional Technical Information
PCB Layout Tips
Qualification Flowchart
Soldering Profile
S-Parameters
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.
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
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