Thin-Film Directional Couplers
DB0805 3dB 90° Couplers
GENERAL DESCRIPTION
ITF TECHNOLOGY
The ITF SMD 3dB 90° Coupler is based on thin-film multilayer
technology. The technology provides a miniature part with excellent
high frequency performance and rugged construction for reliable
automatic assembly.
The ITF 3dB 90° Coupler is offered in a variety of frequency bands
compatible with various types of high frequency wireless
systems.
APPLICATIONS
• Balanced Amplifiers and
Signal Distribution in
Mobile Communications
FEATURES
•
•
•
•
Miniature 0805 size
Low I. Loss
High Isolation
Power Handling:
10W RF CW
• Surface Mountable
• Supplied on Tape and
Reel
• Operating Temperature
Recommended Pad Layout Dimensions
2.24 (0.088)
0.70
(0.028)
mm (inches)
DIMENSIONS:
millimeters (inches)
L
W
T
2.03±0.10
(0.080±0.004)
1.55±0.10
(0.061±0.004)
0.98±0.15
(0.037±0.006)
0.56±0.25
(0.022±0.010)
0.35±0.15
(0.014±0.006)
Bottom View
L
T
B
W
GROUND
1.76
(0.069)
0.64
(0.025)
A
B
3
A
TERMINALS (Top View)
Orientation in Tape
0.15 (0.006) TYP.
50
OHM
OUT1
50
OHM
OUT1
Code Letter
Marking
OUT2
IN
OUT2
IN
ELECTRICAL PARAMETERS*
Part Number**
DB0805A0880ASTR
DB0805A0915ASTR
DB0805A0967ASTR
DB0805A1350ASTR
DB0805A1650ASTR
DB0805A1800ASTR
DB0805A1850ASTR
DB0805A1900ASTR
DB0805A1950ASTR
DB0805A2140ASTR
DB0805A2325ASTR
Frequency F
O
[MHz]
880±30
915±30
967±30
1350±50
1650±50
1800±50
1850±50
1900±50
1950±50
2140±50
2325±50
I. Loss @ F
O
[dB]
0.35
0.35
0.35
0.35
0.35
0.30
0.30
0.30
0.25
0.25
0.25
Phase Balance Code Letter
[deg] max.
Marking
3
Y
3
V
3
V
3
C
3
F
3
F
3
K
3
K
3
K
3
L
3
T
**LEAD FREE TERMINATION
PART NUMBERS:
DB0805AxxxxASTR
LEAD-FREE COMPATIBLE
COMPONENT
*With Recommended Pad Layout
NOTE: Additional Frequencies Available Upon Request
87
PCB Design
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