Ceramic
Low Pass Filter
DC to 1800 MHz
Maximum Ratings
Operating Temperature
Storage Temperature
RF Power Input*
-55°C to 100°C
-55°C to 100°C
10W max. at 25°C
LFCN-1800+
LFCN-1800
Features
•
•
•
•
•
excellent power handling, 10W
small size
7 sections
temperature stable
protected by US Patent 6,943,646
DC Current Input to Output 0.5A max. at 25°C
*Passband rating, derate linearly to 3.5W at 100°C ambient.
CASE STYLE: FV1206
Model
Price
LFCN-1800+ $2.99
LFCN-1800
$2.99
LFCN-1800D+ $3.49
LFCN-1800D $3.49
Qty.
(10-49)
(10-49)
(10-49)
(10-49)
Applications
• harmonic rejection
• VHF/UHF transmitters/receivers
• lab use
Pin Connections
RF IN
RF OUT
GROUND
**RF IN & RF OUT can be interchanged
+ 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.
1**
3**
2,4
Low Pass Filter Electrical Specifications
1
(T
AMB
=25°C)
MODEL
NO.
PASSBAND
(MHz)
(loss < 1 dB)
Max.
LFCN-1800
(+)
DC-1800
Outline Drawing
fco, MHz
Nom.
(loss 3 dB)
Typ.
2125
STOP BAND (MHz)
(loss, dB)
F 20
Min.
2425
30
Typ.
2500-7200
FR 20
Typ.
8600
VSWR (:1)
Stopband
Typ.
20
Passband
Typ.
1.2
NO. OF
SECTIONS
7
1. For Applications requiring DC voltage to be applied to the Input or output, use LFCN-1800D (DC Resistance to
ground is 100 Mohms min.)
typical frequency response
RF IN
ATTENUATION (dB)
40dB
20dB
schematic
RF OUT
3dB
1dB
PCB Land Pattern
Fco F20
FREQUENCY
FR 20dB
Typical Performance Data at 25°C
Frequency
(MHz)
100.00
500.00
1000.00
1500.00
1850.00
1875.00
2000.00
2125.00
2450.00
2500.00
4000.00
6000.00
7200.00
8800.00
9000.00
LFCN-1800
INSERTION LOSS
Insertion Loss
(dB)
0.07
0.21
0.41
0.62
0.86
0.90
1.21
2.29
32.51
33.42
38.61
37.95
32.93
20.55
19.80
VSWR
(:1)
1.01
1.11
1.24
1.24
1.06
1.07
1.22
1.88
15.53
17.05
42.38
34.07
24.48
18.90
17.39
LFCN-1800
VSWR
Suggested Layout,
Tolerance to be within
±.002
Outline Dimensions (
inch
)
mm
A
.126
3.20
H
.087
2.21
B
.063
1.60
J
.024
0.61
C
.037
0.94
K
.122
3.10
D
.020
0.51
L
.024
0.61
E
.032
0.81
M
.087
2.21
F
.009
0.23
N
.012
0.30
G
.169
4.29
P
wt
.071 grams
1.80
.020
Demo Board MCL P/N: TB-270
Suggested PCB Layout (PL-137)
60
INSERTION LOSS (dB)
50
40
30
20
10
0
0
100
VSWR
1000 2000 3000 4000 5000 6000 7000 8000 9000
FREQUENCY (MHz)
10
1
0
1000 2000 3000 4000 5000 6000 7000 8000 9000
FREQUENCY (MHz)
Mini-Circuits
®
INTERNET
http://www.minicircuits.com
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
Distribution Centers
NORTH AMERICA 800-654-7949 • 417-335-5935 • Fax 417-335-5945 • EUROPE 44-1252-832600 • Fax 44-1252-837010
Mini-Circuits
ISO 9001 & ISO 14001
Certified
REV. C
M98898
LFCN-1800
ED-11960/4
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