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Notes: 1. Performance and quality attributes and conditions not expressly stated in this specification sheet are intended to be excluded and do not form a part of this specification sheet. 2. Electrical specifications
and performance data contained herein are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions. 3. The parts covered by this specification sheet 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.
For detailed performance specs
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IF/RF MICROWAVE COMPONENTS
50Ω DC to 1800 MHz
Low Pass Filter
REV. OR
M126521
LFCN-1800D-1+
ED-11960
AD/CP/AM
100302
Typical Performance Data at 25°C
LFCN-1800D-1+
INSERTION LOSS
0
10
20
30
40
50
60
70
80
0 1000 2000 3000 4000 5000 6000 7000 8000 9000
FREQUENCY (MHz)
INSERTION LOSS (dB)
Features
• excellent power handling, 10W
• small size
• 7 sections
• temperature stable
• LTCC construction
• protected by U.S. Patent 6,943,646
Applications
• harmonic rejection
• VHF/UHF transmitters/receivers
• lab use
Ceramic
LFCN-1800D-1+
VSWR
1.0
1.1
1.2
1.3
1.4
0 200 400 600 800 1000 1200 1400 1600 1800
FREQUENCY (MHz)
VSWR
Frequency
(MHz)
Insertion Loss
(dB)
VSWR
(:1)
ABCDEFG
.126 .063 .037 .020 .032 .009 .169
3.20 1.60 0.94 0.51 0.81 0.23 4.29
H J K L M N P wt
.087 .024 .122 .024 .087 .012 .071 grams
2.21 0.61 3.10 0.61 2.21 0.30 1.80 .020
Outline Dimensions ( )
inch
mm
Outline Drawing
Suggested L ayout,
Tolerance to be within
±
.002
PCB Land Pattern
Demo Board MCL P/N: TB-270
Suggested PCB Layout (PL-137)
Electrical Specifications1 at 25°C
LFCN-1800D-1+
1.00 0.03 1.01
1000.00 0.41 1.27
1800.00 0.74 1.06
1900.00 0.86 1.06
2000.00 1.06 1.08
2100.00 1.46 1.22
2200.00 2.72 1.88
2300.00 6.84 4.29
2400.00 15.18 9.33
2500.00 28.34 14.03
3000.00 47.02 21.46
4000.00 36.22 28.03
5000.00 41.86 44.55
8000.00 25.75 15.81
9000.00 21.86 14.03
Parameter F# Frequency (MHz) Min. Typ. Max. Unit
Pass Band
Insertion Loss DC-F1 DC-1800 — — 1.0 dB
Freq. Cut-Off F2 2125 — 3.0 — dB
VSWR DC-F1 DC-1800 — 1.2 — :1
Stop Band Rejection Loss
F3 2550 20 — — dB
F4-F5 3000-7200 —40 —dB
F6 8600 — 20 — dB
VSWR F3-F6 2550-8650 — 20 — :1
1. DC Resistance to ground is 100 Mohms min.
+ RoHS compliant in accordance
with EU Directive (2002/95/EC)
The +Suffix has been added in order to identify RoHS
Compliance. See our web site for RoHS Compliance
methodologies and qualifications.
CASE STYLE: FV1206
PRICE: $3.49 ea. QTY (10-49)
* Derate linearly to 3.5W at 100°C ambient.
Permanent damage may occur if any of these limits are exceeded.
Maximum Ratings
Operating Temperature -55°C to 100°C
Storage Temperature -55°C to 100°C
RF Power Input* 10W max. at 25°C
Max. DC Voltage at pins 1&3 25 VDC
DC Current Input to Output 0.5A max. at 25°C
RF IN 1
RF OUT 3
GROUND 2,4
Pin Connections
Electrical Schematic
Typical Frequency Response
20
3
40
ATTENUATION (dB)
1
F2 F3
F1
DC F4 F5 F6
FREQUENCY