Preliminary Data Sheet
Part Number 856129
44 MHz SAW Filter
Features
For cable headend IF applications
Usable bandwidth 6.0 MHz
High attenuation
Single-ended operation
Ceramic Surface Mount Package (SMP)
Package
Pin Configuration
Surface Mount 24.6 x 9.00 x 2.31 mm
Bottom View
6
7
10 9 8
5
4
3
2
1
Pin No. Description
1
Input return
5
Output
6
Output
return
10
Input
2,3,4
7,8,9
Case Ground
Case Ground
R0.5
2.31
2.31 NOM.
2.62 MAX.
3.53 x 4.83
1.02
1.80
9.00
1.02
1.91
24.6
Dimensions shown are nominal in millimeters
All tolerances are
0.15mm except overall
length
0.20mm and width +0.13/-0.20mm
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 -
05-Feb-2003
Page 1 of 5
Preliminary Data Sheet
Part Number 856129
44 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature:
(2)
+25
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 44.0 -
MHz
Minimum Insertion Loss
- 20.8
22.0
dB
Lower 3 dB Bandedge
(4)
Upper 3 dB Bandedge
-
47.0
40.95
47.07
41.0
-
MHz
MHz
Lower 38 dB Bandedge
(4)
Upper 38 dB Bandedge
40.0
-
40.35
47.75
-
48
MHz
MHz
Passband Variation
41.5
-
46.5
MHz
-
0.63
0.75
dB
Phase Linearity
41.9
-
46.1
MHz
-
3.35
4.25
deg
Group Delay Variation
41.9
-
46.1
MHz
-
80
100
sec
Stopband Attenuation
(4)
24
-
40
MHz
48
-
84
MHz
38
38
45
45
-
-
dB
dB
Source Impedance
(5)
- 50 -
Load Impedance
(5)
- 50 -
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. All attenuation measurements are measured relative to minimum insertion loss
5. This is the optimum impedance in order to achieve the performance shown
Test Circuit:
50
Single-ended
1,2,3,4
6,7,8,9
50
10
5
50
No impedance matching
required
Subject to change or obsolescence without notice
Rev -
05-Feb-2003
Page 2 of 5
Preliminary Data Sheet
Part Number 856129
44 MHz SAW Filter
Matching Schematics
50
Single-ended
1,2,3,4
6,7,8,9
50
10
5
50
No impedance matching
required
Marking
PCB Footprint
XXXXXX
856129
SAWTEK
Date code
ID dot
8.84
9.19
.69
1.22
1.95
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
Tape and Reel
Section A-A
2.6
0.36
9.39
25.6
2.0
4.0
44
1.5
1.75
A
20.2
A
1.5
12.0
Dimensions shown are nominal in millimeters
Packaging quantity: 1000 units/reel
20.2
13.0
2.7
102
330
44.8
Direction of travel
2.0
ID dot
Subject to change or obsolescence without notice
Rev -
05-Feb-2003
Page 4 of 5
Preliminary Data Sheet
Part Number 856129
44 MHz SAW Filter
Maximum Ratings
Parameter
Symbol Minimum
Typical
Maximum
Unit
Operating Temperature Range
T
-
25
-
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 -
05-Feb-2003
Page 5 of 5
PDF 
ZIP