Ceramic
Low Pass Filter
50Ω
LFCN-5850+
DC to 5850 MHz
Maximum Ratings
Features
Operating Temperature
-55oC to 100oC
Storage Temperature
-55oC to 100oC
RF Power Input*
8W at 25oC
DC Current Input to Output 0.5A max. at 25oC
• excellent power handling, 8W
• small size
• 7 sections
• temperature stable
• protected by US Patent 6,943,646
o
*Passband rating, derate linearly to 3 W at 100 C ambient
CASE STYLE: FV1206
Model
LFCN-5850+
LFCN-5850D+
RF IN
RF OUT
GROUND
1**
3**
2, 4
• harmonic rejection
• VHF/UHF transmitters/receivers
• lab use
The +Suffix has been added in order to identify RoHS
Compliance. See our web site for RoHS Compliance
methodologies and qualifications.
**RF IN & RF OUT can be interchanged
Low Pass Filter Electrical Specifications (TAMB= 25OC)
Outline Drawing
A
4
F TYP
B
3
1
2
PAD SHAPE
MAY VARY
SIDE VIEW
TOP VIEW
INDEX
AREA
PASSBAND
(MHz)
fco, MHz
Nom.
STOP BAND (MHz)
(loss, dB)
(loss < 2 dB)
Max.
(loss 3 dB)
Typ.
F 20
Min.
30
Typ.
FR 20
Typ.
Stopband
Typ.
Passband
Typ.
DC - 5850
6540
7600
7100 - 9900
12500
17
1.3
C
NO. OF
SECTIONS
7
schematic
typical frequency response
E TYP
ATTENUATION (dB)
FRONT VIEW
PCB Land Pattern
J TYP
P TYP
MAX
VSWR (:1)
1. For Applications requiring DC voltage to be applied to the Input or output, use LFCN-5850D+ (DC Resistance to
ground is 100 Mohms min.)
D TYP
øN
PLATED THRU HOLE
ON GROUND PAD
Qty.
(10-49)
(10-49)
+ RoHS compliant in accordance
with EU Directive (2002/95/EC)
Applications
Pin Connections
Price
$1.99
$2.49
RF OUT
RF IN
30dB
20dB
3 dB
2dB
fco F 20
FR 20 dB
FREQUENCY (MHz)
L M K
Typical Performance Data at 25oC
H
G
Suggested Layout,
Tolerance to be within ±.002
Outline Dimensions ( inch
mm )
A
.126
3.20
B
.063
1.60
C
.037
0.94
D
.020
0.51
E
.032
0.81
F
.009
0.23
G
.169
4.29
H
.087
2.21
J
.024
0.61
K
.122
3.10
L
.024
0.61
M
.087
2.21
N
.012
0.30
P
wt
.071 grams
1.80
.020
Demo Board MCL P/N: TB-270
Suggested PCB Layout (PL-137)
.098
.072 TYP
.021 TYP
ø.015 PTH,
8 PL.
COPLANAR WAVEGUIDE:
.038 TRACE WIDTH,
& .013 GAP, 2 PL.
(SEE NOTE BELOW)
.028 TYP
.024 TYP
Frequency
(MHz)
Insertion Loss
(dB)
VSWR
(:1)
40
500
2000
4000
5100
5850
0.03
0.10
0.28
0.50
0.63
1.21
1.04
1.05
1.25
1.39
1.13
1.55
6400
6540
6700
6900
7050
7100
2.10
4.07
9.14
19.10
31.56
40.23
1.35
2.62
6.13
12.09
15.81
16.41
7600
9900
10500
12500
15000
30.23
29.70
25.82
20.25
13.43
23.18
16.11
11.77
14.38
14.74
LFCN-5850+
INSERTION LOSS
.019, 2 PL.
NOTES:
1. COPLANAR WAVEGUIDE PARAMETERS ARE SHOWN FOR ROGERS
RO4350B WITH THICKNESS .020” ± .0015”.
COPPER: 1/2 OZ. EACH SIDE.
FOR OTHER MATERIALS TRACE WIDTH & GAP MAY NEED TO BE
MODIFIED.
2. BOTTOM SIDE OF THE PCB IS CONTINUOUS GROUND PLANE.
DENOTES PCB COPPER LAYOUT WITH SMOBC
(SOLDER MASK OVER BARE COPPER)
DENOTES COPPER LAND PATTERN FREE OF SOLDER MASK
LFCN-5850+
VSWR
100
60
50
40
VSWR
DUT
PACKAGE
OUTLINE
INSERTION LOSS(dB)
PIN 1
30
10
20
10
0
1
0
3000
6000
9000
12000
15000
0
3000
6000
9000
12000
'.)''#$/&-')#
.
')+"$()')%&*(**!'(("& '&$"&*"&""),"+*-*"+
15000
FREQUENCY (MHz)
FREQUENCY (MHz)
REV. B
M113668
EDR-8033/2U
LFCN-5850+
URJ/RAV
071025
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