Coaxial
Bi-Directional Coupler
ZFDC-20-1H+
50Ω
Up to 25W 30 to 400 MHz
BNC version shown
CASE STYLE: J17
Connectors Model
Maximum Ratings
Operating Temperature
Storage Temperature
Features
• high power, up to 25W
• wideband, 30 to 400 MHz
• excellent directivity, 30 dB typ.
• low mainline loss, 0.15 dB typ.
• rugged shielded case
-55°C to 100°C
-55°C to 100°C
BNC
SMA
ZFDC-20-1H+
ZFDC-20-1H-S+
ZFDC-20-1H-N+
Permanent damage may occur if any of these limits are exceeded.
N-TYPE
BRACKET (OPTION"B")
Coaxial Connections
INPUT
S
1
3
2
Applications
+RoHS Compliant
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications
OUTPUT
• VHF/UHF
• instrumentation
• communication receivers & transmitters
• power leveling
COUPLED (forward)
COUPLED (reverse)
Electrical Specifications at 25°C
FREQ.
(MHz)
COUPLING
(dB)
MAINLINE LOSS1
(dB)
DIRECTIVITY
(dB)
VSWR POWER
(:1) INPUT2, W
Outline Drawing
L
M
U
L
M
U
L
MU
Typ. Max. Typ. Max. Typ. Max. Typ. Min. Typ. Min.
Typ. Min.
Typ. Max. Max.
Nom.
20.5±0.5
M= 100-200 MHz
Flatness
fL-fU
30-400
±0.4
0.15 0.4 0.15 0.4
U= 200-400 MHz
0.3
0.4
30
25
30
25
30
23
1.2 25 25
L= 30-100 MHz
1. Mainline loss includes theoretical power loss at coupled port.
2. Power input will be derating linearly to 50% of rating at 100°C.
Typical Performance Data
Frequency Mainline Loss
Coupling
(dB)
Directivity
(dB)
Return Loss
(dB)
(MHz)
(dB)
In-Out
In-Cpl Fwd
Out-Cpl Rev Out-Cpl Fwd In-Cpl Rev
In
Out
Cpl Fwd
Cpl Rev
30.00
47.50
65.00
82.50
100.00
0.11
0.07
0.07
0.08
0.11
20.74
20.68
20.63
20.59
20.59
20.73
20.66
20.62
20.58
20.58
36.33
36.66
36.97
37.14
37.19
39.08
39.46
39.93
40.58
40.42
17.88
21.75
24.43
26.31
27.24
17.93
17.83
22.02
25.33
28.32
30.88
17.78
21.88
25.13
28.10
30.36
21.84
24.65
27.05
28.65
inch
Outline Dimensions (
)
mm
150.00
200.00
288.89
333.33
400.00
0.16
0.19
0.21
0.23
0.24
20.63
20.69
20.77
20.80
20.83
20.62
20.67
20.74
20.77
20.80
38.74
36.80
33.49
31.88
29.81
38.06
35.64
32.92
31.46
29.45
27.92
29.69
29.81
29.73
28.38
30.48
30.30
29.10
28.43
27.54
33.62
33.78
30.60
28.85
26.14
34.39
39.07
35.64
31.36
26.41
A
1.25
B
1.25
C
.75
D
.63
E
F
G
H
.38 1.000
9.65 25.40
.125 1.000
3.18 25.40
31.75 31.75 19.05 16.00
J
--
--
K
--
--
L
M
N
2.18
P
.75
Q
wt
.07 grams
1.78 75.0
.125 1.688
3.18 42.88 55.37 19.05
ZFDC-20-1H+
MAINLINE LOSS
ZFDC-20-1H+
COUPLING & DIRECTIVITY
For option "B" with N-type connectors, dimension "C" increases to 0.94 inches.
at RF level of -10 dBm
at RF level of -10 dBm
0.4
60
COUPLING IN-CPL FWD
DIRECTIVITY IN-CPL REV
50
40
30
20
10
0
0.3
0.2
0.1
0.0
0
50
100
150
200
250
300
350
400
0
50
100
150
200
250
300
350
400
FREQUENCY (MHz)
FREQUENCY (MHz)
ZFDC-20-1H+
RETURN LOSS
Electrical Schematic
at RF level of -10 dBm
60
50
40
30
20
10
IN
OUT
CPL FWD
CPL REV
0
50
100
150
200
250
300
350
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. J
M163703
ZFDC-20-1H+
WP/TD/CP
180905
®
Mini-Circuits
www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com
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