Coaxial
ZDC-20-1+
ZDC-20-1
Directional Coupler
50Ω
25 to 400 MHz
Features
Maximum Ratings
Operating Temperature
-55°C to 100°C
-55°C to 100°C
• excellent directivity, 35 dB typ.
CASE STYLE: M22
• excellent mainline loss, 0.3 dB typ.
• high input power, up to 5W max.
• rugged shielded case
Storage Temperature
Permanent damage may occur if any of these limits are exceeded.
Connectors Model
BNC ZDC-20-1(+)
Price
$51.95 ea. (1-9)
Qty.
Coaxial Connections
BRACKET (OPTION"B")
BRACKET (OPTION"BR")
$5.00
$1.50
(1+)
(1+)
INPUT
3
2
1
Applications
OUTPUT
COUPLED
• VHF/HF
+RoHS Compliant
• instrumentation
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications
• communication receivers & transmitters
• amateur radio
Directional Coupler Electrical Specifications
FREQ.
RANGE
(MHz)
COUPLING
(dB)
MAINLINE LOSS1
(dB)
DIRECTIVITY
(dB)
VSWR
(:1)
POWER
INPUT
(W)
Outline Drawing
L
M
U
L
M
U
L
MU
fL-fU
Nom.
Flatness Typ. Max. Typ. Max. Typ. Max. Typ. Min. Typ. Min. Typ. Min.
Typ.
1.25
Max. Max.
25-400
20±0.5
±0.5
0.2 0.25 0.3 0.35 0.35 0.5
25
20
35
25
25
20
3.0
5.0
L = 25-50 MHz M = 50-300 MHz
U= 300-400 MHz
1. Mainline loss includes theoretical power loss at coupled port.
Typical Performance Data
Frequency
(MHz)
Mainline Loss
(dB)
Coupling
(dB)
In-Cpl
Directivity
(dB)
Return Loss
(dB)
In-Out
In
Out
Cpl
25.00
45.00
80.00
120.00
160.00
0.13
0.14
0.14
0.14
0.14
19.97
19.98
19.98
20.01
20.02
35.76
35.38
34.30
33.33
32.39
34.28
33.99
33.78
34.16
33.90
33.88
31.38
27.78
24.90
22.55
39.90
38.66
36.78
35.11
33.12
inch
Outline Dimensions (
)
mm
A
2.25
B
1.38
C
1.24
D
.50
E
F
G
H
210.00
260.00
310.00
360.00
400.00
0.15
0.15
0.10
0.15
0.21
20.08
20.13
20.15
20.23
20.28
30.90
29.21
27.48
25.48
24.37
34.23
33.58
32.70
31.39
29.89
20.48
18.79
17.46
16.45
15.74
31.35
29.50
28.08
26.85
26.00
.150 3.100
3.81 78.74
.138 1.238
3.51 31.45
57.15 35.05 31.50 12.70
J
3.25
82.55
K
.10
L
.40
M
1.15
N
1.86
P
.64
S
wt
.150 grams
3.81 74.0
2.54 10.16 29.21 47.24 16.26
ZDC-20-1
MAINLINE LOSS
ZDC-20-1
COUPLING & DIRECTIVITY
at RF level of -10 dBm
at RF level of -10 dBm
0.4
0.3
0.2
0.1
0.0
70
COUPLING
DIRECTIVITY
60
50
40
30
20
10
0
25
100
175
250
325
400
25
100
175
250
325
400
FREQUENCY (MHz)
FREQUENCY (MHz)
Electrical Schematic
ZDC-20-1
RETURN LOSS
at RF level of -10 dBm
50
42
34
26
18
10
IN
OUT
CPL
25
100
175
250
325
400
FREQUENCY (MHz)
Notes
A. Performance and quality attributes and conditions not expressly stated in this specification document are intended to be excluded and do not form a part of this specification document.
B. Electrical specifications and performance data contained in this specification document are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions.
C. The parts covered by this specification document are subject to Mini-Circuits standard limited warranty and terms and conditions (collectively, “Standard Terms”); Purchasers of this part are entitled
to the rights and benefits contained therein. For a full statement of the Standard Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits’ website at www.minicircuits.com/MCLStore/terms.jsp
REV. B
M137477
ZDC-20-1
WZ/TD/CP/AM
131017
®
Mini-Circuits
www.minicircuits.com P.O. Box 35166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com
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