Document 149
Data Line EMI Filters
–
Leaded
These filters are designed to virtually eliminate con-
ducted 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.
Typical Response (Measured on an HP 8753D network analyzer. Ref: 50 Ohms)
Current
max
Lines (mA)
DCR
max
(mOhms)
Part
L/winding
(µH)
Isolation
(Vrms)
0
number1
Differential Mode
DLF 8000L
DLF 8500L
DLF 4000L
DLF 4500L
8
8
4
4
100
500
100
500
28
25
28
24
100
45
100
45
300
300
300
300
10
DLF 3000L
DLF 3500L
DLF 2000L
DLF 2500L
3
3
2
2
100
500
100
500
28
24
28
24
100
45
100
45
300
300
300
300
20
30
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.
0.1
1
10
100
1000
2. Operating temperature range -40°C to +85°C.
3. Electrical specifications at 25°C.
Frequency (MHz)
0.350
8,90
0.350
8,90
0.850
21,59
0.450
11,43
0.450
11,43
max
0.475
12,07
max
dia
0.125 ±0.020
3,18 ±0,51
8 line
4 line
3 line
2 line
0.0315
0,800
0.300
7,62
0.100
2,54
0.100
2,54
0.100
2,54
0.200
5,08
Terminations: Tin-silver over tin over phos bronze
Weight:
DLF2000: 0.74 g; DLF2500: 0.78 g
DLF3000: 0.83 g; DLF3500: 0.91 g
DLF4000: 0.95 g; DLF4500: 1.09 9
DLF8000: 1.56 g; DLF8500: 2.22 g
2 line
and
3 line
0.430
10,9
0.650
16,51
0.110 ±0.010
2,79 ±0,25
8 line
0.100
2,54
ref
0.858
21,79
0.0315
0,80
0.300
7,62
dia
Pin 1
16 15 14 13 12 1110 9
8
1
7
2
6
3
5
4
6
1
5
2
4
3
6
1
4
3
0.700
17,78
0.455
11,56
inches
mm
1
2 3 4 5 6 7 8
Dimensions are in
Specifications subject to change without notice.
Please check our website for latest information.
Document149 Revised10/04/07
© Coilcraft, Inc. 2009