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 TTDLF/CCDLF
surface mount filters. To order, contact Coilcraft or visit
http://order.coilcraft.com.
Part
number
1
DLF 8000L
DLF 8500L
DLF 4000L
DLF 4500L
DLF 3000L
DLF 3500L
DLF 2000L
DLF 2500L
Isolation
(Vrms)
300
300
300
300
300
300
300
300
Attenuation (dB) re: 50 Ohms
Current
DCR
max
L / winding
max
Lines (mA)
(µH)
(mOhms)
8
100
28
100
8
500
25
45
4
100
28
100
4
500
24
45
3
100
28
100
3
500
24
45
2
100
28
100
2
500
24
45
Typical Response*
0
Differential Mode
10
20
Co
m
DL mo
F nM
X5 o
00 de
Co
m
DL mon
F
X0 Mod
00 e
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.
30
0.1
1
10
100
1000
Frequency (MHz)
*measured on HP 8753D network analyzer.
0.450
11,43
0.350
8,90
0.350
8,90
0.450
11,43
0.475
max
12,07
0.0315
dia
0,800
0.125 ±0.020
3,18 ±0,51
0.850
max
21,59
8 line
4 line
3 line
2 line
0.110 ±0.010
2,79 ±0,25
0.650
16,51
0.430
10,9
3 line
0.430
10,9
2 line
8 line
0.300
7,62
0.455
11,56
Pin 1
0.100
2,54
0.700
ref
17,78
0.858
21,79
0.0315 dia
0,80
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
Terminations:
Tin-silver over tin
Specifications subject to change without notice.
Please check our website for latest information.
Document 149
Revised 01/28/05
© Coilcraft, Inc. 2006
Talking
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