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)
• Hermetic
• RoHS compliant (2002/95/EC), Pb-free
•
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
21
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
2.546.50
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: Al2O3 ceramic
Lid: Kovar, Ni plated
Terminations: Au plating 0.5 - 1.0µm,
over a 2 - 6µm Ni plating
Pb
Subject to change or obsolescence without notice Rev B 27-Oct-2005 Page 1 of 5
Data Sheet
Part Number 855399
350 MHz SAW Filter
Electrical Specifications (1)
Operating Temperature: (2) +25
oC
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 -
Ω
Load Impedance (5) - 50 -
Ω
Substrate Material - Quartz - -
Temperature Coefficient of Frequency - ∆F/F=-[(T-T0)/5.4]2 - ppm/oC
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 Ω
Single-ended
1,2,3,4,6
7,8,9,10,12
50Ω18pF
27nH
18pF
11 5
27nH
50Ω
Subject to change or obsolescence without notice Rev B 27-Oct-2005 Page 2 of 5
Data Sheet
Part Number 855399
350 MHz SAW Filter
Typical Performance (at +25oC)
Subject to change or obsolescence without notice Rev B 27-Oct-2005 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 Ω
Single-ended
1,2,3,4,6
7,8,9,10,12
50Ω18pF
27nH
18pF
11 5
27nH
50Ω
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
Ø1.5
2.3
13.9
4.0 Ø1.5
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
Ø330
24.8
2.7
Ø102
Ø13.0
Ø20.2 2.0
ID dot
Subject to change or obsolescence without notice Rev B 27-Oct-2005 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 - oC
Important Notes
Warnings
• Electrostatic Sensitive Device (ESD)
• Avoid ultrasonic exposure
RoHS Compliance
• This product complies with EU directive 2002/95/EC (RoHS)
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 Qualification Flowchart Soldering Profile
S-Parameters RoHS Information 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
Pb
Subject to change or obsolescence without notice Rev B 27-Oct-2005 Page 5 of 5
