Surface Mount
TCD-18-4+
TCD-18-4
Directional Coupler
50Ω
5 to 1000 MHz
Maximum Ratings
Operating Temperature
Storage Temperature
Features
• wideband, 5 to 1000 MHz
• low mainline loss, 0.7 dB typ.
• aqueous washable
-40°C to 85°C
-55°C to 100°C
CASE STYLE: DB714
PRICE: $1.49 ea. QTY (25)
• leads for excellent solderability
• protected by US Patent 6,140,887
+ 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.
Pin Connections
INPUT
3
OUTPUT
4
1
2
6
5
Applications
• communications
• signal sampling
• level detection
COUPLED
GROUND
50Ω TERM EXTERNAL
NOT USED
Directional Coupler Electrical Specifications
FREQ.
RANGE
(MHz)
COUPLING
(dB)
MAINLINE LOSS1
DIRECTIVITY
(dB)
VSWR POWER
(:1) INPUT, W
(dB)
Outline Drawing
L
M
U
L
M
U
L
MU
Max. Max.
1.0 1.0
fL-fU
Nom.
Flatness
±0.6
M = mid range [10 fL to fU/2]
Typ. Max. Typ. Max. Typ. Max. Typ. Min.
0.7 1.3 0.7 1.1 1.0 1.4 22 11
U= upper range [fU/2 to fU]
Typ. Min.
Typ. Min.
Typ.
1.20
5-1000 17.9±0.5
20
15
18
—
L = low range [fL to 10 fL]
1. Mainline loss includes theoretical power loss at coupled port.
Typical Performance Data
PCB Land Pattern
Frequency
(MHz)
Mainline Loss
(dB)
Coupling
(dB)
In-Cpl
Directivity
(dB)
Return Loss
(dB)
In-Out
In
Out
Cpl
5.00
100.00
200.00
300.00
400.00
0.71
0.62
0.64
0.67
0.64
17.93
17.76
17.80
17.85
17.89
22.13
30.64
28.81
26.73
24.88
20.96
24.40
24.53
24.53
24.44
23.54
28.02
28.17
28.03
27.55
21.00
24.20
23.85
23.28
22.54
Suggested Layout,
Tolerance to be within ±.002
500.00
600.00
700.00
800.00
1000.00
0.73
0.80
0.80
0.84
0.92
17.92
17.96
18.00
18.03
18.08
23.27
21.85
20.56
19.55
17.79
24.18
23.87
23.48
23.03
22.00
26.78
25.93
25.07
24.24
22.68
21.86
21.34
20.77
20.27
19.42
inch
Outline Dimensions (
)
mm
A
.160
4.06
B
.150
3.81
C
.160
4.06
D
.050
1.27
E
F
.040
1.02
.025
0.64
TCD-18-4
MAINLINE LOSS
TCD-18-4
COUPLING & DIRECTIVITY
at RF level of -10 dBm
at RF level of -10 dBm
2.0
G
.028
0.71
H
.065
1.65
J
.190
4.83
K
.030
0.76
wt
grams
0.15
50
40
30
20
10
0
COUPLING
DIRECTIVITY
1.6
1.2
0.8
0.4
0.0
Demo Board MCL P/N: TB-71
Suggested PCB Layout (PL-009)
0
200
400
600
800
1000
0
200
400
600
800
1000
FREQUENCY (MHz)
FREQUENCY (MHz)
TCD-18-4
RETURN LOSS
Electrical Schematic
at RF level of -10 dBm
50
40
30
20
10
0
IN
OUT
CPL
0
200
400
600
800
1000
FREQUENCY (MHz)
®
minicircuits.com
Mini-Circuits
REV. F
M119986
ED-8563/1
TCD-18-4
WZ/TD/CP/AM
081113
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
TM
The Design Engineers Search Engine Provides ACTUAL Data Instantly From MINI-CIRCUITS At: www.minicircuits.com
IF/RF MICROWAVE COMPONENTS