Coaxial
Directional Coupler
ZFDC-10-21-75
75Ω
10 to 750 MHz
Maximum Ratings
Operating Temperature
Storage Temperature
Features
• wideband, 10 to 750 MHz
• excellent directivity, 30 dB typ.
• rugged shielded case
-55°C to 100°C
-55°C to 100°C
CASE STYLE: K18
Connectors Model
Price
$54.95
$2.50
Qty.
(1-9)
(1+)
Permanent damage may occur if any of these limits are exceeded.
BNC
ZFDC-10-21-75
BRACKET (OPTION"B")
Coaxial Connections
Applications
INPUT
1
2
3
• catv
OUTPUT
COUPLED
• VHF/UHF
• instrumentation
• communications receivers & transmitters
Directional Coupler Electrical Specifications
FREQ.
RANGE
(MHz)
COUPLING
(dB)
MAINLINE LOSS1
DIRECTIVITY
(dB)
VSWR
(:1)
POWER
INPUT
(W)
(dB)
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.
±0.75 1.5 1.8 1.5 1.9 1.7 2.1 36 30 30 20 26 20
M = mid range [10 fL to fU/2] U= upper range [fU/2 to fU]
Typ.
1.4
Max. Max.
10-750
11±0.5
1.0
2.0
L = low range [fL to 10 fL]
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
10.00
46.00
82.00
140.00
220.00
1.39
1.48
1.57
1.63
1.66
10.96
11.02
11.10
11.17
11.23
60.33
58.37
58.27
54.38
48.45
24.87
23.71
22.47
21.77
21.57
16.51
16.08
15.67
15.51
15.68
16.50
16.15
15.63
15.24
14.99
inch
Outline Dimensions (
)
mm
A
1.25
B
1.25
C
.75
D
.63
E
.38
F
1.00
G
H
315.00
390.00
480.00
630.00
750.00
1.67
1.67
1.67
1.69
1.71
11.30
11.36
11.43
11.59
11.72
43.20
39.99
37.62
35.29
33.16
21.19
20.82
20.32
19.10
18.39
15.98
16.33
16.73
16.94
16.89
14.64
14.25
13.67
12.33
11.26
.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-10-21-75
MAINLINE LOSS
ZFDC-10-21-75
COUPLING & DIRECTIVITY
at RF level of -10 dBm
at RF level of -10 dBm
2.0
1.8
1.6
1.4
1.2
1.0
100
80
60
40
20
0
COUPLING
DIRECTIVITY
0
150
300
450
600
750
0
150
300
450
600
750
FREQUENCY (MHz)
FREQUENCY (MHz)
Electrical Schematic
ZFDC-10-21-75
RETURN LOSS
at RF level of -10 dBm
50
40
30
20
10
0
IN
OUT
CPL
0
150
300
450
600
750
FREQUENCY (MHz)
®
For detailed performance specs
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®
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ZFDC-10-21-75
WZ/TD/CP/AM
090917
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.