Data Sheet
Part Number 856243
836.5 MHz SAW Filter
Features
For AMPS, TDMA, CDMA applications
Usable bandwidth 25 MHz
High attenuation
No impedance matching required for operation
at 50
Single-ended operation
Chip Scale Package (CSP)
Ceramic surface mount package
Hermetic
Package
Pin Configuration
Surface Mount 2.00 x 1.50 x 0.76 mm
Bottom View
3
4
2
1
Pin No.
Description
1
Input
3
Output
2,4
Case
ground
0.76 NOM.
0.84 MAX.
1.30
1.50
0.42
0.56
0.25x45 CHAMFER
1.80
2.00
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
Subject to change or obsolescence without notice
Rev -
21-Nov-2002
Page 1 of 6
Data Sheet
Part Number 856243
836.5 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-20 to +70
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 836.5 -
MHz
Maximum Insertion Loss
824
-
849
MHz
-
2.2
3.2
dB
Absolute Attenuation
DC
-
760
MHz
760
-
790
MHz
790
-
804
MHz
869
-
894
MHz
894
-
1080
MHz
1080
-
2600
MHz
35
30
35
38
35
32
37
33
38
42
37
35
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
Amplitude Ripple
824
-
849
MHz
-
0.8
1.8
dB p-p
Input/Output Return Loss
824
-
849
MHz
9.5
12
-
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
Subject to change or obsolescence without notice
Rev -
21-Nov-2002
Page 2 of 6
Data Sheet
Part Number 856243
836.5 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-30 to +80
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 836.5 -
MHz
Maximum Insertion Loss
824
-
849
MHz
825
-
848
MHz
-
-
2.4
2.2
3.5
3.0
dB
dB
Absolute Attenuation
DC
-
760
MHz
760
-
790
MHz
790
-
804
MHz
869
-
894
MHz
894
-
1080
MHz
1080
-
2600
MHz
35
30
35
38
35
32
37
33
38
42
37
35
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
Amplitude Ripple
824
-
849
MHz
-
0.8
1.8
dB p-p
Input/Output Return Loss
824
-
849
MHz
9
12
-
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
Subject to change or obsolescence without notice
Rev -
21-Nov-2002
Page 3 of 6
Data Sheet
Part Number 856243
836.5 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev -
21-Nov-2002
Page 4 of 6
Data Sheet
Part Number 856243
836.5 MHz SAW Filter
Matching Schematics
50
Single-ended
2,4
1
3
50
50
No impedance matching
required
Marking
PCB Footprint
Marking
code
MFG site
P M
WWY
ID dot
Date code
0.31x45
CHAMFER
0.76
2.00
0.62
1.50
The date code consists of: WW = 2 digit week,
Y = last digit of year, M = manufacturing site code
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
1.83
Section A-A
0.3
1.09
2.34
1.5
1.0
4.0
4.0
2.0
A
A
8.0
3.5
1.75
8.8
ID dot
2.0
Direction of travel
330
20.2
13.0
102
2.7
Dimensions shown are nominal in millimeters
Packaging quantity: 10000 units/reel
Subject to change or obsolescence without notice
Rev -
21-Nov-2002
Page 5 of 6
Data Sheet
Part Number 856243
836.5 MHz SAW Filter
Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Unit
Operating Temperature Range
T
-30
+80
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
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 -
21-Nov-2002
Page 6 of 6
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