Ceramic
LFCN-1800+
LFCN-1800
Low Pass Filter
DC to 1800 MHz
Maximum Ratings
Operating Temperature
Storage Temperature
Features
CASE STYLE: FV1206
• excellent power handling, 10W
• small size
-55°C to 100°C
-55°C to 100°C
Model
LFCN-1800+ $2.99
LFCN-1800 $2.99
Price
Qty.
(10-49)
(10-49)
(10-49)
(10-49)
• 7 sections
• temperature stable
• protected by US Patent 6,943,646
RF Power Input*
10W max. at 25°C
LFCN-1800D+ $3.49
LFCN-1800D $3.49
DC Current Input to Output 0.5A max. at 25°C
*Passband rating, derate linearly to 3.5W at 100°C ambient.
Applications
+ RoHS compliant in accordance
with EU Directive (2002/95/EC)
• harmonic rejection
• VHF/UHF transmitters/receivers
• lab use
Pin Connections
RF IN
1**
3**
2,4
The + suffix identifies RoHS Compliance. See our web site
forRoHSCompliancemethodologiesandqualifications.
RF OUT
Low Pass Filter Electrical Specifications1 (TAMB=25°C)
GROUND
**RF IN & RF OUT can be interchanged
PASSBAND
(MHz)
(loss < 1 dB)
Max.
fco, MHz
Nom.
(loss 3 dB)
Typ.
STOP BAND (MHz)
(loss, dB)
VSWR (:1)
NO. OF
SECTIONS
MODEL
NO.
Outline Drawing
F20
30
FR 20 Stopband Passband
Min.
Typ.
Typ.
Typ.
Typ.
LFCN-1800(+)
DC-1800
2125
2425
2500-7200
8600
20
1.2
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
schematic
RF IN
RF OUT
40dB
20dB
3dB
1dB
PCB Land Pattern
FR 20dB
Fco F20
FRREQUENCY
CY
Typical Performance Data at 25°C
Frequency
(MHz)
Insertion Loss
(dB)
VSWR
(:1)
100.00
500.00
0.07
0.21
1.01
1.11
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
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
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
Suggested Layout,
Tolerance to be within .002
inch
Outline Dimensions (
)
mm
A
.126
3.20
B
.063
1.60
C
.037
0.94
D
.020
0.51
E
.032
0.81
F
.009
0.23
G
.169
4.29
H
.087
2.21
J
.024
0.61
K
.122
3.10
L
.024
0.61
M
.087
2.21
N
.012
0.30
P
wt
.071 grams
1.80 .020
Demo Board MCL P/N: TB-270
Suggested PCB Layout (PL-137)
LFCN-1800
INSERTION LOSS
LFCN-1800
VSWR
60
50
40
30
20
10
0
100
10
1
0
1000 2000 3000 4000 5000 6000 7000 8000 9000
FREQUENCY (MHz)
0
1000 2000 3000 4000 5000 6000 7000 8000 9000
FREQUENCY (MHz)
®
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P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
REV.
C
M98898
Mini-Circuits
LFCN-1800
ED-11960/4
AD/CP/AM
060725
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