Coaxial
Directional Coupler
ZFDC-20-33+
50Ω
20 to 3000 MHz
Maximum Ratings
Operating Temperature
Storage Temperature
Features
CASE STYLE: K18
Connectors Model
-40°C to 85°C
-55°C to 100°C
• very wideband, 20 to 3000 MHz
• excellent directivity, 20 dB typ.
• excellent mainline loss, 1.0 dB typ.
• rugged shielded case
SMA
N-TYPE
ZFDC-20-33-S+
ZFDC-20-33-N+
BRACKET (OPTION"B")
Coaxial Connections
Applications
INPUT
3
1
2
+RoHS Compliant
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications
• cellular
OUTPUT
COUPLED
• GPS
• instrumentation
• communication receivers & transmitters
Outline Drawing
Electrical Specifications at 25°C
Parameter
Frequency Range
Condition (MHz)
Min.
Typ.
Max.
Unit
20
—
—
—
—
—
3000
MHz
20
200
1500
2500
3000
20
200
1500
2500
0.4
0.4
0.9
1.3
1.4
20.5
20.9
21.3
20.7
20.9
0.5
0.4
0.1
25
0.65
0.65
1.20
1.6
1.8
21.1
21.5
22.8
22.4
22.7
1.0
0.8
0.6
—
dB
Mainline Loss (above theoretical 0.05 dB)
—
19.9
20.3
19.8
19.0
19.0
—
—
—
19
19
dB
dB
dB
Coupling
3000
20 - 1500
1500 - 2500
2500 - 3000
20
200
1500
Coupling Flatness( )
Directivity
25
15
14
—
—
—
12
11
inch
2500
Outline Dimensions (
)
mm
3000
10
14
—
20 - 1500
1500 - 3000
20 - 1500
1500 - 3000
20 - 1500
1500 - 3000
18
12
18
12
12
10
—
—
24
18
24
18
19
14
—
—
—
—
—
—
—
—
0.5
1.0
A
1.25
B
1.25
C
.75
D
.63
E
.38
F
1.00
G
H
dB
dB
dB
Return Loss (Input)
Return Loss (Output)
Return Loss (Coupling)
.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
20 - 1500
W
Input Power
1500 - 3000
Electrical Schematic
Typical Performance Data
Frequency
(MHz)
Mainline Loss
(dB)
Coupling
(dB)
In-Cpl
Directivity
(dB)
Return Loss
(dB)
In-Out
In
Out
Cpl
20.00
50.00
100.00
150.00
200.00
0.42
0.40
0.40
0.41
0.43
20.57
20.68
20.77
20.85
20.94
27.05
31.57
32.98
33.46
32.14
24.72
28.55
31.12
33.09
32.67
25.23
29.48
32.70
34.41
34.65
23.24
27.78
31.38
33.95
36.39
1000.00
1600.00
2000.00
2600.00
3000.00
0.65
0.81
0.92
1.13
1.31
21.59
21.19
20.82
20.45
20.43
18.10
14.40
13.77
14.94
17.39
38.49
45.73
36.01
23.69
18.12
28.67
24.89
23.12
20.58
17.93
22.93
18.57
18.07
19.26
16.15
ZFDC-20-33+
ZFDC-20-33+
ZFDC-20-33+
MAINLINE LOSS
COUPLING & DIRECTIVITY
RETURN LOSS
at RF level of -10 dBm
at RF level of -10 dBm
at RF level of -10 dBm
60
2.0
60
50
40
30
20
10
0
50
40
30
20
10
0
1.6
1.2
0.8
0.4
0.0
COUPLING
DIRECTIVITY
IN
500
OUT
CPL
0
500
1000
1500
2000
2500
3000
0
500
1000
1500
2000
2500
3000
0
1000
1500
2000
2500
3000
FREQUENCY (MHz)
FREQUENCY (MHz)
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.
M151107
ED-14437/1
ZFDC-20-33+
HY/CP/AM
151007
B
®
Mini-Circuits
www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com
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