Surface Mount
NEW!
Directional Couplers
DBTC-12-4 DBTC-12-4L
50Ω
5 to 1000 MHz
Features
Maximum Ratings
• very flat coupling
OperatingTemperature
-40°C to 85°C
-55°C to 100°C
No Leads
Leads
• very broadband, multi octave
• temperature stable, BLUE CELL™ base
• all welded construction
• leads attached for better solderibility
• micro-miniaturecoupler
StorageTemperature
CASE STYLE:AT790-1
PRICE: $1.99 ea. QTY (25)
$1.69 ea. QTY (1000)
CASE STYLE:AT1030
PRICE: $2.14 ea. QTY (25)
$1.84 ea. QTY (1000)
Pin Connections
INPUT
3
4
• protected by U.S. Patent 6,140,887 & 6,784,521
OUTPUT
COUPLED
1
GROUND
2
Applications
• VHF/UHF receivers/transmitters
• cellular
NOT USED*
*pins 5&6 must be isolated
5,6
Directional Coupler Electrical Specifications
Outline Drawing
AT790-1
FREQ.
RANGE
(MHz)
COUPLING
(dB)
MAINLINE LOSS*
(dB)
DIRECTIVITY
(dB)
VSWR** POWER
(:1)
INPUT, W
Max.
L
M
U
L
M
U
L
MU
fL-fU
Nom.
12.2±0.5
Flatness
Typ. Max. Typ. Max. Typ. Max. Typ. Min. Typ. Min. Typ. Min.
Typ.
1.20
Max. Max.
5-1000
±0.9
0.9 1.8 0.7 1.3 1.1 1.6 33 22 21 14 15
—
0.5 1.0
L = low range [fL to 10 fL] M = mid range [10 fL to fU/2]
U = upper range [fU/2 to fU]
*
Includes theoretical coupled power loss of 0.27 dB at 12 dB coupling.
**For coupled port VSWR above 500 MHz, 1.5:1 typ.
AT1030
Typical Performance Data
Frequency
(MHz)
InsertionLoss
(dB)
Coupling
(dB)
In-Cpl
Directivity
(dB)
Return Loss
(dB)
Out
In-Out
In
Cpl
5.00
10.00
50.00
100.00
500.00
600.00
800.00
900.00
1000.00
0.88
0.79
0.73
0.75
0.85
0.88
0.95
1.00
1.06
12.07
11.96
11.90
11.93
11.99
11.99
12.03
12.07
12.13
34.34
34.86
35.53
37.41
25.82
22.32
17.75
16.15
14.74
19.19
21.25
22.99
22.94
22.00
21.56
20.94
20.79
20.48
23.31
27.96
35.09
34.58
26.19
25.58
25.46
26.14
26.70
17.81
19.68
21.01
21.11
18.96
17.94
15.62
14.55
13.43
AT790-1 & AT1030
inch
BLUE CELL™ is protected by U.S. Patents.
Outline Dimensions (
)
J
mm
AT790-1
A
B
C
D
E
F
G
H
K
wt.
grams
.10
.150 .150 .150 .050 .030 .025 .028 .050 .160 .030
3.81 3.81 3.81 1.27 0.76 0.64 0.71 1.27 4.06 0.76
DBTC-12-4L
INSERTION LOSS
DBTC-12-4L
COUPLING & DIRECTIVITY
AT1030
A
B
C
D
E
F
G
H
J
K
L
wt.
.166 .150 .155 .050 .037 .025 .012 .060 .184 .030 .004 grams
4.22 3.81 3.94 1.27 0.94 0.64 0.30 1.52 4.67 0.76 0.10
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
at RF level of -10 dBm
1.2
.10
COUPLING
DIRECTIVITY
1.0
0.8
0.6
0.4
0.2
0.0
Reflow Solder Assembly
Silver-bearing solder (Sn/Pb/Ag 62/36/2%) is recommended;
however, tin-lead eutectic (Sn/Pb 63/37%) may be used.
For temperature profiles, see Application Note AN-40-004
Demo Board MCL P/N: TB-278
Suggested PCB Layout (PL-150)
0.0
0
0
200
400
600
800
1000
200
400
600
800
1000
FREQUENCY (MHz)
FREQUENCY (MHz)
DBTC-12-4L
RETURN LOSS
at RF level of -10 dBm
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
IN
OUT
800
CPL
0.0
0
200
400
600
1000
FREQUENCY (MHz)
REV. F
M89619
DBTC-12-4 ED-8954/1
DBTC-12-4L ED-8954A
WZ/TD/CP
®
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