DLF

Document 149 -1
Through Hole Data Line EMI Filters
These filters are designed to virtually eliminate conducted
EMI in data line applications. They provide exceptional
common mode noise reduction from 5 MHz to 300 MHz
while passing signal line data frequencies below 200 MHz
with minimal attenuation.
These low resistance filters feature excellent electrical
isolation, environmental stability and low cost. Optional
covers make them auto insertable. They also meet IEC
695-2-2 needle flame test requirements. There are 8, 4,
3 and 2-line versions with DC current capacity of 100 mA
(DLF x000 series) or 500 mA (DLF x500 series).
Coilcraft Designer’s Kit D303 contains four samples of
all values shown plus samples of our PDLF and CCDLF
surface mount filters. To order, contact Coilcraft or visit
http://order.coilcraft.com.
Current
DCR
Part maxL / windingmaxIsolation
number
Lines (mA) min (µH) (mOhms) (Vrms)
DLF 8000L18 100
28
100
300
DLF 8500L18 500
25
45
300
DLF 4000L4 100 28
100
300
DLF 4500L4 500 24
45
300
DLF 3000L13 100
28
100
300
DLF 3500L3 500 24
45
300
DLF 2000L12 100
28
100
300
DLF 2500L12 500
24
45
300
1. For optional cover add “C” to part number just before the “L”: e.g.
DLF 8500CL. Not available on 3500, 4000 and 4500 parts.
2. Operating temperature range –40°C to +85°C.
3. Electrical specifications at 25°C.
Typical Response (Measured on an HP 8753D network analyzer. Ref: 50 Ohms)
Attenuation (dB)
0
Weight typ (g)
0.74
1.32
0.78
1.36
0.83
1.41
0.91
0.95
1.09
1.56
2.70
2.22
3.36
Packaging
75 per tube
64 per tube
75 per tube
64 per tube
75 per tube
64 per tube
75 per tube
55 per tube
55 per tube
27 per tube
25 per tube
27 per tube
25 per tube
Terminations Tin-silver over tin over phos bronze
Differential Mode
Co
10
Co
m
DL mo
F nM
x5 o
00 de
m
DL mon
F
M
x0 ode
00
20
30
Part number
DLF 2000L DLF 2000CL
DLF 2500L
DLF 2500CL
DLF 3000L
DLF 3000CL
DLF 3500L
DLF 4000L
DLF 4500L
DLF 8000L
DLF 8000CL
DLF 8500L
DLF 8500CL
0.1
1
10
Frequency (MHz)
100
1000
Document 149-1 Revised 02/12/15
Document 149 -1
Through Hole Data Line EMI Filters
Without Optional Cover
0.125 ±0.020
3,18 ±0,51
Front
view
8 line
4 line
3 line
2 line
0.450
11,43
0.850
max
21,59
0.450
11,43
0.350
8,90
0.350
8,90
DLF xx00L
0.300
7,62
0.0315
∅
0,800
0.475
Part 12,07 max
number
Pin 1
0.400
max
10,16
0.100
2,54
Pin 1
Recommended
PC Board Layouts
Dimensions are in
0.300
7,62
0.04
∅
1,016
8
0.100
2,54
0.400
max
10,16
0.100
2,54
Pin 1
6
0.300
7,62
1
inches
mm
0.100
2,54
Pin 1
0.04
∅
1,016
16
0.400
max
10,16
0.200
5,08
0.04
∅
1,016
Internal
code
0.04
∅
1,016
6
0.300
7,62
1
0.100
2,54
XXXX Y
Pin 1
0.300
7,62
1
Rear
view
1
0.100
2,54
0.200
5,08
16 15 14 13 12 11 10 9
8 7 6 5
6 5 4
6 4
1 2 3 4 5 6 7 8
1 2 3 4
1 2 3
1 3
Schematics
Note: Polarity marking is for reference only. Parts may be inserted into the circuit with polarity reversed without affecting performance.
0.877
max
22,28
Part
number
Part
number
0.300
7,62
0.0315
∅
0,800
DLF8x00CL
XXXX Y
Internal
code
0.115 ±0.005
2,92 ±0,13
Pin 1
0.650
max
16,51
0.420
max
10,9
0.100
2,54
Pin 1
6
0.100
2,54
Internal
code
0.420
max
10,9
0.115 ±0.03
2,92 ±0,076
0.200
5,08
Pin 1
0.04
∅
1,016
0.300
7,62
inches
mm
Part
number
Internal
code
0.115 ±0.03
2,92 ±0,076
0.04
∅
1,016
0.300
7,62
1
Dimensions are in
0.650
max
16,51
0.100
2,54
Pin 1
16
Recommended
PC Board Layouts
2 line
0.490
max
12,45
0.650
max
16,51
0.455
max
11,56
DLF xx00L
3 line
0.490
max
12,45
DLF
2x00CL
XXXX Y
8 line
DLF
3x00CL
XXXX Y
With Optional Cover
0.04
∅
1,016
6
0.300
7,62
1
0.100
2,54
1
0.200
5,08
16 15 14 13 12 11 10 9
6 5 4
6 4
1 2 3 4 5 6 7 8
1 2 3
1 3
Schematics
Note: Polarity marking is for reference only. Parts may be inserted into the circuit with polarity reversed without affecting performance.
Document 149-2 Revised 02/12/15
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