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
Mini-Circuits
®
www.minicircuits.com P.O. Box 35166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com
50Ω 0.2 to 250 MHz
Bi-Directional Coupler
Plug-In
CASE STYLE: A01
PRICE: $25.20 ea. QTY. (1-9)
Outline Dimensions ( )
inch
mm
Maximum Ratings
Pin Connections
Outline Drawing
Directional Coupler Electrical Specifi cations
REV.C
M124579
PDC-20-3BD
WZ/TD/CP/AM
130114
A B C D E F
.770 .800 .385 .400 .370 .400
19.56 20.32 9.78 10.16 9.40 10.16
G
H
J
K
w
t
.200 .20 .14 .031 grams
5.08 5.08 3.56 0.79 5.2
Typical Performance Data
PDC-20-3BD+
PDC-20-3BD
Operating Temperature -55°C to 100°C
Storage Temperature -55°C to 100°C
Features
• up to 4W power input
• excellent VSWR, 1.1:1 typ.
• very low mainline loss, 0.25 dB typ.
• excellent directivity, 40 dB typ.
• rugged welded construction, hermetically sealed
Applications
• HF/UHF
• communication receivers & transmmitters
• amateur radio
PDC-20-3BD
MAINLINE LOSS
0.0
0.1
0.2
0.3
0.4
0.1 1 10 100 1000
FREQUENCY (MHz)
MAINLINE LOSS (dB)
at RF level of -10 dBm
PDC-20-3BD
COUPLING & DIRECTIVITY
10
20
30
40
50
60
70
80
90
0.1 1 10 100 1000
FREQUENCY (MHz)
COUPLING & DIRECTIVITY
(dB)
COUPLING IN - CPL FWD
DIRECTIVITY IN - CPL REV
at RF level of -10 dBm
PDC-20-3BD
RETURN LOSS
20
25
30
35
40
45
50
0.1 1 10 100 1000
FREQUENCY (MHz)
RETURN LOSS (dB)
IN OUT CPL FWD CPL REV
at RF level of -10 dBm
INPUT 1
OUTPUT 4
COUPLED (forward) 3
COUPLED (reverse) 6
GROUND 2,5,7,8
CASE GROUND 2,5,7,8
Electrical Schematic
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
Frequency
(MHz)
Mainline Loss
(dB)
Coupling
(dB)
Directivity
(dB)
Return Loss
(dB)
In-Out
In-Cpl Fwd Out-Cpl Rev Out-Cpl Fwd In-Cpl Rev
In Out Cpl Fwd Cpl Rev
0.20 0.37 19.39 19.45 59.26 40.06 21.10 20.56 21.39 21.84
0.50 0.30 19.37 19.39 59.12 46.47 26.95 25.66 26.07 27.37
1.00 0.25 19.33 19.32 60.43 52.88 30.73 28.71 28.84 30.94
5.00 0.20 19.27 19.28 58.69 62.79 40.44 34.00 33.63 39.59
10.00 0.20 19.27 19.27 57.23 60.02 42.50 34.54 34.16 41.33
20.00 0.21 19.29 19.28 55.96 52.13 41.82 34.37 34.15 41.00
50.00 0.24 19.32 19.32 49.80 44.08 36.66 33.15 33.62 36.92
100.00 0.28 19.36 19.40 41.57 37.13 31.05 30.48 31.22 31.92
200.00 0.34 19.45 19.63 31.52 30.76 25.65 26.34 27.61 26.80
250.00 0.39 19.54 19.83 28.07 28.71 24.44 25.35 26.62 25.46
FREQ.
(MHz)
COUPLING
(dB)
MAINLINE LOSS1
(dB)
DIRECTIVITY
(dB)
VSWR
(:1)
POWER
INPUT, W
Nom. Flatness
L M UL M ULMU
fL-fUTy p . Max. Ty p . Max. Ty p . Max. Ty p . Min. Ty p . Min. Ty p. Min. Ty p . Max. Max.
0.2-250 19.5±0.5 ±0.5 0.3 1.0 0.25 0.9 0.35 0.7 47 25 40 25 30 20 1.1 1.5 4.0
L = low range [fL to 10 fL] M = mid range [10 fL to fU/2] U= upper range [fU/2 to fU]
1. Mainline loss includes theoretical power loss at coupled port.
