MODEL
NO.
PASSBAND
(MHz)
(Loss < 1.2dB)
Max.
fco, MHz
Nom
(Loss 3 dB)
Typ
STOPBAND (MHz)
(Loss, dB)
VSWR (:1) NO. OF
SECTIONS
f20
Min.
f40
Typ.
Stopband
Typ.
Passband
Typ.
VLFX-540 DC-540 810 1000 1100-20000 10 1.2 21
Frequency
(MHz)
Insertion Loss
(dB)
VSWR
(:1)
50 0.32 1.07
250 0.46 1.09
400 0.69 1.06
540 0.95 1.15
620 1.21 1.24
700 1.64 1.28
810 3.08 1.25
880 8.81 3.45
1000 32.81 10.22
1100 46.43 13.44
1500 50.47 26.44
2000 65.72 39.98
3000 73.08 74.63
5000 61.13 68.07
7500 70.11 49.82
10000 80.55 29.49
12500 72.73 4.71
15000 78.70 21.69
17500 67.07 4.77
20000 56.88 12.07
Low Pass Filter Electrical Specifications @ 25°C
Maximum Ratings
Operating Temperature -55°C to 100°C
Storage Temperature -55°C to 100°C
RF Power Input* 10W max. at 25°C
Typical Performance Data @ 25°C
Outline Dimensions ( )
inch
mm
B D E wt.
.39 2.67 .312 grams
9.91 67.82 7.92 17.0
Outline Drawing
FREQUENCY
>20 GHz
fco f20 f40
40 dB
ATTENUATION (dB)
20 dB
3 dB
1 dB
Features
Applications
• harmonic rejection
• transmitters/receivers
• lab use
• test instrumentation
• very good isolation, 40 dB up to 20 GHz
• 21 sections
• excellent power handling, 10W
• temperature stable LTCC internal structure
• re-entry frequency > 20 GHz
• rugged unibody construction
• protected by US patent 6,943,646
SMA FEMALE
CONN
SMA MALE
CONN
E
ACROSS FLATS
D ± .05
B
MAX Functional Schematic
RF IN RF OUT
Typical Frequency Response
Connectors Model Price Qty.
SMA VLFX-540 $39.95 ea. (1-9)
CASE STYLE: FF1118
+ 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.
*Passband rating, derate linearly to 3.5W at 100°C ambient.
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®
Mini-Circuits ISO 9001 & ISO 14001 Certified
50Ω DC to 540 MHz (40 dB Isolation up to 20 GHz)
Low Pass Filter
Coaxial
REV. A
M97025
VLFX-540
EDU-0399
ED-11930A/9
URJ/AD/CP
061120
VLFX-540
VLFX-540
INSERTION LOSS
0
10
20
30
40
50
60
70
80
90
100
0 4000 8000 12000 16000 20000
FREQUENCY (MHz)
INSERTION LOSS(dB)
VLFX-540
VSWR
1
10
100
0 4000 8000 12000 16000 20000
FREQUENCY (MHz)
VSWR
