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Data Line EMI Filters

  • Common-mode and differential-mode filtering in a single component
  • Reduce conducted noise by a factor of 32 from 5 MHz to 300 MHz
  • Data frequencies below 200 MHz pass with minimal attenuation
  • Available in 8, 4, 3 and 2 wire versions
  • Meets IEC 695-2-2 needle flame test requirements
  • AEC-Q200 Grade 3 (−40°C to +85°C)
  • RoHS-compliant. Tin-silver over tin over phos bronze terminations.
  • Samples of all values plus surface mount versions are available in Coilcraft Designer's Kit D303

SPECIFICATIONS


Part number1
Click to get parts
Lines Common mode
peak impedance
(kOhms)
Cutoff
frequency2
(MHz)
L min3
(µH)
DCR
max4
(mOhms)
Isolation5
(Vrms)
Current
max
(mA)
DLF 8000L1 8 2.03 @ 8.3 MHz 200 28 100 300 100
DLF 8500L1 8 0.60 @ 40 MHz 60 25 45 300 500
DLF 4000L 4 2.13 @ 12 MHz 390 28 100 300 100
DLF 4500L 4 1.62 @ 14 MHz 730 24 45 300 500
DLF 3000L1 3 1.98 @ 13 MHz 650 28 100 300 100
DLF 3500L 3 1.45 @ 15 MHz 670 24 45 300 500
DLF 2000L1 2 2.03 @ 14 MHz 660 28 100 300 100
DLF 2500L1 2 1.55 @ 14 MHz 610 24 45 300 500
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 Frequency at which the differential mode attenuation equals 3 dB.
3 Inductance is per winding.
4 DCR is per winding, measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
5 Interwinding isolation measured for one minute.
6 Ambient temperature range: −40°C to +85°C
7 Storage temperature range: Component: −40°C to +85°C
Packaging trays or tubes: −40°C to +80°C
8 Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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Updated: April 11, 2017