Coaxial
ZFDC-20-5+
Directional Coupler
50Ω
0.1 to 2000 MHz
BNC version shown
Maximum Ratings
Operating Temperature
Storage Temperature
Features
CASE STYLE: K18
• very wideband, 0.1 to 2000 MHz
-55°C to 100°C
-55°C to 100°C
Connectors Model
Price
Qty.
• excellent directivity, 27 dB typ.
• excellent mainline loss, 0.7 dB typ.
• rugged shielded case
BNC
SMA
N-TYPE
ZFDC-20-5+
ZFDC-20-5-S+
ZFDC-20-5-N+
$84.95
$89.95
$89.95
$5.00
(1-9)
(1-9)
(1-9)
(1+)
Permanent damage may occur if any of these limits are exceeded.
Coaxial Connections
BRACKET (OPTION"B")
INPUT
3
1
2
Applications
OUTPUT
COUPLED
• cellular
+RoHS Compliant
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications
• instrumentation
• communication receivers & transmitters
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.
0.5 0.3 1.0 0.7 1.4 1.5 2.3 30 20 27 20 22 10
M = mid range [10 fL to fU/2] U= upper range [fU/2 to fU]
Typ.
1.2
Max. Max.
0.1-2000 19.5 0.5
0.5
2.0
L = low range [fL to 10 fL]
1. Mainline loss includes theoretical power loss at coupled port.
* Above 1000 MHz, coupling flatness 1 dB.
Typical Performance Data
Frequency
(MHz)
Mainline Loss
(dB)
Coupling
(dB)
In-Cpl
Directivity
(dB)
Return Loss
(dB)
In-Out
In
Out
Cpl
0.10
0.50
0.90
188.00
544.00
0.71
0.49
0.44
0.36
0.69
19.79
19.57
19.52
19.46
19.85
25.09
33.79
34.79
32.56
30.03
11.79
21.84
23.69
26.83
22.02
11.84
22.89
25.23
27.83
22.00
12.78
21.74
23.40
26.54
23.17
inch
Outline Dimensions (
)
mm
A
1.25
B
1.25
C
.75
D
.63
E
.38
F
1.00
G
H
920.00
1020.00
1136.00
1310.00
2000.00
1.07
1.17
1.28
1.41
1.91
20.18
20.18
20.13
19.96
19.34
28.13
28.46
29.48
34.06
18.40
19.60
19.23
18.96
18.82
18.91
20.58
20.30
20.07
19.75
17.73
18.75
17.73
16.64
15.02
10.05
.125 1.000
3.18 25.40
31.75 31.75 19.05 16.00
9.65 25.40
J
--
--
K
--
--
L
M
N
2.18
P
.75
Q
wt
.07 grams
1.78 70.0
.125 1.688
3.18 42.88 55.37 19.05
ZFDC-20-5+
MAINLINE LOSS
ZFDC-20-5+
COUPLING & DIRECTIVITY
at RF level of -10 dBm
at RF level of -10 dBm
2.0
1.6
1.2
0.8
0.4
0.0
60
50
40
30
20
10
0
COUPLING
DIRECTIVITY
0
400
800
1200
1600
2000
0
400
800
1200
1600
2000
FREQUENCY (MHz)
FREQUENCY (MHz)
Electrical Schematic
ZFDC-20-5+
RETURN LOSS
at RF level of -10 dBm
40
32
24
16
8
IN
OUT
CPL
0
0
400
800
1200
1600
2000
FREQUENCY (MHz)
®
For detailed performance specs
& shopping online see web site
Mini-Circuits
ISO 9001 ISO 14001 AS 9100 CERTIFIED
®
REV. B
M119986
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661 The Design Engineers Search Engine
Provides ACTUAL Data Instantly at minicircuits.com
ZFDC-20-5+
WZ/TD/CP/AM
120927
IF/RF MICROWAVE COMPONENTS
Notes: 1. Performance and quality attributes and conditions not expressly stated in this specification sheet are intended to be excluded and do not form a part of this specification sheet. 2. Electrical specifications
and performance data contained herein are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions. 3. The parts covered by this specification sheet 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.