Surface Mount
SYDC20-171VHP+
Directional Coupler
50Ω
20 dB Coupling 30 to 174 MHz 100 Watt
Features
Maximum Ratings
• high power, 100W max. with output load VSWR 1.5 max
• high power, 20W max. with output open or short
• low mainline loss, 0.25 dB typ.
CASE STYLE: PD1647-3
Operating Temperature -40°C to 50°C Case*
Storage Temperature -55°C to 100°C
* Case temperature is defined as temperature on ground leads.
Permanent damage may occur if any of these limits are exceeded.
+RoHS Compliant
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications
• good VSWR, 1.05 typ.
Applications
• military mobile
Pad Connections
INPUT
Electrical Specifications at 25°C
1
Parameter
Condition (MHz)
Min.
Typ.
Max.
Unit
OUTPUT
COUPLED
8
Frequency Range
30
—
174
MHz
4
5
30
100
174
30-174
30
—
—
0.24
.19
.20
20.7
20.5
20.6
20.7
0.1
23
0.4
.35
.4
50
Ω
TERM EXTERNAL*
Mainline Loss1 (above theoretical 0.04 dB)
dB
dB
—
GROUND
2,3,6,7
—
—
* External termination must be able to handle 250 mW min.
20.2
20
19.8
—
21.3
21.5
21.5
0.3
—
Coupling
100
174
30-174
30
Outline Drawing
Coupling Flatness(±)
Directivity
dB
dB
20
14
10
20
22
20
20
23
20
20
22
18
—
100
174
30
18
—
14
—
26
—
Return Loss (Input)
Return Loss (Output)
100
174
30
35
—
dB
dB
30
—
27
—
100
174
30
38
—
31
—
29
—
Return Loss (Coupling)
Input Power1
100
174
30-174
31
—
dB
W
22
—
—
100
1. The user must provide adequate means of heat removal to limit the temperature of ground connections under the PCB to 50°C, in order to ensure proper performance.
At 25°C ambient temperature this requires thermal resistance of the user's PC board heat sink to be 3.5°C/W power derate linearly to 75 Watt at 50°C.
Typical Performance Data
Frequency
(MHz)
Mainline Loss
(dB)
Coupling
(dB)
In-Cpl
Directivity
(dB)
Return Loss
(dB)
In-Out
In
Out
Cpl
30.00
40.00
50.00
60.00
70.00
0.24
0.23
0.21
0.21
0.20
0.19
0.18
0.18
0.18
0.19
20.57
20.60
20.63
20.66
20.68
20.70
20.73
20.75
20.76
20.75
22.60
22.01
21.32
20.49
19.66
18.84
17.39
16.07
14.22
13.01
26.52
28.55
30.47
32.36
34.22
35.93
37.79
37.22
32.78
30.56
26.99
29.54
31.88
34.30
37.26
40.59
46.50
40.53
33.13
30.60
28.53
32.23
36.38
41.29
43.12
39.23
33.19
29.63
26.14
24.13
inch
Outline Dimensions ( mm
)
A
B
C
D
E
F
G
H
J
K
L
.750 .520
.39 .690 .100 .476 .394 .045 .060 .276 .194
19.05 13.21 9.91 17.53 2.54 12.09 10.01 1.14 1.52 7.01 4.93
80.00
100.00
120.00
150.00
174.00
M
N
wt
grams
2.60
P
Q
R
S
T
U
V
.257 .560 .475 .561 .258 .069 .061 .030 .433
6.53 14.22 12.07 14.25 6.55 1.75 1.55 0.76 11.00
Demo Board MCL P/N: TB-630+
Suggested PCB Layout (PL-351)
Refer to Application Note: AN-00-017
SYDC20-171VHP+
INSERTION LOSS
SYDC20-171VHP+
COUPLING & DIRECTIVITY
0.6
0.4
0.2
0.0
30
24
18
12
6
COUPLING
90
DIRECTIVITY
0
30
60
120
150
180
30
60
90
120
150
180
FREQUENCY (MHz)
FREQUENCY (MHz)
SYDC20-171VHP+
RETURN LOSS
Electrical Schematic
70
60
50
40
30
20
10
0
IN
OUT
CPL
30
60
90
120
150
180
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
M151107
ED-16350
®
SYDC20-171VHP+
WP/CP/AM
151005
Mini-Circuits
www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com
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