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 Directional Coupler
75 2 to 250 MHz
Features
-40C to 85C -55C to 100C
Surface Mount
JDC-20-3-75+ JDC-20-3-75
Maximum Ratings
Operating Temperature Storage Temperature
* low mainline loss, 0.3 dB typ. * high directivity, 30 dB typ. * excellent solderability
CASE STYLE: BH292 PRICE: $ 13.60 ea. QTY (25-49)
Pin Connections
INPUT OUTPUT COUPLED GROUND ISOLATE (DO NOT USE) 1 6 3 2,5 4
Applications
* communications * level detecting * signal sampling * reflective power measurements
+ RoHS compliant in accordance with EU Directive (2002/95/EC)
The +Suffix identifies RoHS Compliance. See our web site for RoHS Compliance methodologies and qualifications.
Directional Coupler Electrical Specifications
FREQ. (MHz) COUPLING (dB)
L fL-fU 2-250 Nom. 19.20.5 Flatness 0.5 Typ. 0.4 Max. 0.8 Typ. 0.3
Outline Drawing
MAINLINE LOSS1 (dB)
M Max. 0.7 Typ. 0.4 U Max. 0.7 Typ. 24 L Min. 16
DIRECTIVITY (dB)
M Typ. 30 Min. 20 Typ. 20 U Min. 15
VSWR POWER (:1) INPUT, W
L Typ. 1.1 MU
Max. Max. 0.5 1.0
PCB Land Pattern
L = 2-20 MHz M = 20-125 MHz U = 125-250 MHz 1. Mainline loss includes theoretical power loss at coupled port.
Typical Performance Data
Frequency (MHz)
Suggested Layout, Tolerance to be within .002
Mainline Loss (dB) In-Out 0.44 0.30 0.28 0.28 0.30 0.32 0.35 0.37 0.40 0.46
JDC-20-3-75 MAINLINE LOSS
Coupling (dB) In-Cpl 19.22 19.23 19.24 19.24 19.26 19.28 19.32 19.35 19.38 19.45
Directivity (dB)
In 23.55 28.64 29.97 30.50 31.34 31.42 30.66 29.92 28.50 25.22
Return Loss (dB) Out 24.40 31.07 33.28 34.28 33.32 30.68 28.22 26.97 25.21 21.84
Cpl 23.02 28.66 30.26 30.94 32.19 33.55 35.94 37.80 41.60 37.78
1.00 4.00 7.00 10.00 50.00 90.00 130.00 150.00 180.00 250.00
23.26 29.11 30.46 31.30 30.27 27.59 25.09 23.75 22.06 18.52
Outline Dimensions ( inch ) mm
A .280 7.11 H .047 1.19 B .310 7.87 J .065 1.65 C --K .065 1.65 D .100 2.54 L .300 7.62 E .225 5.72 F .055 1.40 G .100 2.54 wt grams 0.45
MAINLINE LOSS (dB)
JDC-20-3-75 COUPLING & DIRECTIVITY 60 COUPLING & DIRECTIVITY (dB) 50 40 30 20 10 0 0 50 100 150 FREQUENCY (MHz) 200 250
at RF level of -10 dBm
0.6 0.5 0.4 0.3 0.2 0.1 0.0 0
at RF level of -10 dBm
COUPLING
DIRECTIVITY
Demo Board MCL P/N: TB-33 Suggested PCB Layout (PL-044)
50
100 150 FREQUENCY (MHz)
200
250
JDC-20-3-75 RETURN LOSS 60 RETURN LOSS (dB) 50 40 30 20 10 0 0 50 100 150 FREQUENCY (MHz) 200 250
at RF level of -10 dBm
Electrical Schematic
CPL
IN
OUT
Mini-Circuits
TM
(R)
minicircuits.com
ISO 9001 ISO 14001 AS 9100 CERTIFIED
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661 For detailed performance specs & shopping online see Mini-Circuits web site The Design Engineers Search Engine Provides ACTUAL Data Instantly From MINI-CIRCUITS At: www.minicircuits.com
IF/RF MICROWAVE COMPONENTS
REV. C M119986 ED-5581 JDC-20-3-75 WZ/TD/CP/AM 081111


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