Data Sheet
Part Number 856409
1842.5 MHz SAW Filter
Features
• For DCS applications
• Usable bandwidth of 75 MHz
• Compatible with leading chipset suppliers
• Ultra low loss
• Single-ended input, 50Ω
• Balanced output, 200Ω
• Chip Scale Package (CSP)
• Hermetic
•
Package Pin Configuration
Surface Mount 1.50 x 1.50 x 0.76 mm Bottom View
123
654
Pin No. Description
2 Input
6,4 Output
1,3,5 Case ground
0.25
0.55
0.40
0.60
1.35
1.50
1.35
1.50
0.76 NOM.
0.84 MAX.
Dimensions shown are nominal in millimeters
All tolerances are ±0.10mm
Body: Al2O3 ceramic
Lid: Kovar or Alloy 42, Au over Ni plated
Terminations: Au plating 0.5 - 1.0µm,
over a 2 - 6µm Ni plating
Subject to change or obsolescence without notice Rev D 08-Dec-2004 Page 1 of 7
Data Sheet
Part Number 856409
1842.5 MHz SAW Filter
Electrical Specifications (1)
Operating Temperature Range: (2) +25 oC
Parameter (3) Minimum Typical Maximum Unit
Center Frequency - 1842.5 - MHz
Maximum Insertion Loss
1805 - 1880 MHz
-
1.5
2.0
dB
Absolute Attenuation
100 - 1200 MHz
1200 - 1705 MHz
1705 - 1764 MHz
1764 - 1785 MHz
1920 - 1980 MHz
1980 - 3000 MHz
3000 - 5415 MHz
5415 - 5640 MHz
5640 - 6000 MHz
25
25
20
9
15
20
20
41
38
38
33
25
12
18
26
42
45
42
-
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
Output Amplitude Balance (|S31/S21|)
1805 - 1880 MHz
-1.5
1.3
1.5
dB
Output Phase Balance [Φ(S31)-ΦS21+180]
1805 - 1880 MHz
-10
2
10
degree
Input/Output VSWR
1805 - 1880 MHz
-
2.0
2.5
Source Impedance (4) - 50 -
Ω
Load Impedance (Balanced) (4) - 200||18nH - Ω
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 Ω
Single-ended
Input
1,3,5
24
50Ω6
200 Ω
18nH
200 Ω
Balanced
Output
Subject to change or obsolescence without notice Rev D 08-Dec-2004 Page 2 of 7
Data Sheet
Part Number 856409
1842.5 MHz SAW Filter
Electrical Specifications (1)
Operating Temperature Range: (2) -20 to +75 ºC
Parameter (3) Minimum Typical Maximum Unit
Center Frequency - 1842.5 - MHz
Maximum Insertion Loss
1805 - 1880 MHz
-
1.5
2.3
dB
Absolute Attenuation
100 - 1200 MHz
1200 - 1705 MHz
1705 - 1764 MHz
1764 - 1785 MHz
1920 - 1980 MHz
1980 - 3000 MHz
3000 - 5415 MHz
5415 - 5640 MHz
5640 - 6000 MHz
25
25
20
6
15
20
20
41
38
38
33
25
12
18
26
42
45
42
-
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
Output Amplitude Balance (|S31/S21|)
1805 - 1880 MHz
-1.5
1.3
1.5
dB
Output Phase Balance [Φ(S31)-ΦS21+180]
1805 - 1880 MHz
-10
2
10
degree
Input/Output VSWR
1805 - 1880 MHz
-
2.0
2.6
Source Impedance (4) - 50 -
Ω
Load Impedance (Balanced) (4) - 200||18nH - Ω
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 Ω
Single-ended
Input
1,3,5
24
50Ω6
200 Ω
18nH
200 Ω
Balanced
Output
Subject to change or obsolescence without notice Rev D 08-Dec-2004 Page 3 of 7
Data Sheet
Part Number 856409
1842.5 MHz SAW Filter
Electrical Specifications (1)
Operating Temperature Range: (2) -25 to +80 ºC
Parameter (3) Minimum Typical Maximum Unit
Center Frequency - 1842.5 - MHz
Maximum Insertion Loss
1805 - 1880 MHz
-
1.5
2.4
dB
Absolute Attenuation
100 - 1200 MHz
1200 - 1705 MHz
1705 - 1764 MHz
1764 - 1785 MHz
1920 - 1980 MHz
1980 - 3000 MHz
3000 - 5415 MHz
5415 - 5640 MHz
5640 - 6000 MHz
25
25
20
6
15
20
20
41
38
38
33
25
12
18
26
42
45
42
-
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
Output Amplitude Balance (|S31/S21|)
1805 - 1880 MHz
-1.5
1.3
1.5
dB
Output Phase Balance [Φ(S31)-ΦS21+180]
1805 - 1880 MHz
-10
2
10
degree
Input/Output VSWR
1805 - 1880 MHz
-
2.0
2.8
Source Impedance (4) - 50 -
Ω
Load Impedance (Balanced) (4) - 200||18nH - Ω
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 Ω
Single-ended
Input
1,3,5
24
50Ω6
200 Ω
18nH
200 Ω
Balanced
Output
Subject to change or obsolescence without notice Rev D 08-Dec-2004 Page 4 of 7
Data Sheet
Part Number 856409
1842.5 MHz SAW Filter
Typical Performance (at +25oC)
Subject to change or obsolescence without notice Rev D 08-Dec-2004 Page 5 of 7
Data Sheet
Part Number 856409
1842.5 MHz SAW Filter
Matching Schematics
50 Ω
Single-ended
Input
1,3,5
24
50Ω6
200 Ω
18nH
200 Ω
Balanced
Output
Marking PCB Footprint
15
WWY
M
Date code
MFG site
ID dot
Marking
code
0.20
0.70
0.50
0.35
1.45
1.45
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
A
A
Section A-A
0.25
1.09
1.83
1.83
Ø1.5
Ø1.0
4.0
4.0
2.0
8.0
3.5
1.75
8.8
ID dot
2.0
Direction of travel
Ø330
Ø20.2
Ø13.0
Ø102
2.7
Dimensions shown are nominal in millimeters
Packaging quantity: 10000 units/reel
Subject to change or obsolescence without notice Rev D 08-Dec-2004 Page 6 of 7
Data Sheet
Part Number 856409
1842.5 MHz SAW Filter
Maximum Ratings
Parameter Symbol Minimum Maximum Unit
Operating Temperature Range T -25 +80 oC
Storage Temperature Range Tstg -40 +85
oC
Warnings
• Electrostatic Sensitive Device (ESD)
• Avoid ultrasonic exposure
Material Content
• Does not contain lead (Pb) or other RoHS restricted materials
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 D 08-Dec-2004 Page 7 of 7
