Data Line EMI Filters –Leaded
These filters are designed to virtually eliminate the
problem of conducted EMI in data line applications.
They provide exceptional common mode noise at-
tenuation from 5 MHz to 300 MHz while passing sig-
nal line data frequencies below 200 MHz with
minimal attenuation.
These low resistance filters have been designed for
excellent electrical isolation, environmental stability,
and low cost. An optional cover makes them compati-
ble with auto insertion equipment.
Coilcraft data line EMI filters come in 8, 4, 3 and
2-wire versions with DC current capacity of 100 mA
(DLF X000 series) or 500 mA (DLF X500 series).
Coilcraft Designer’s Kit D103 contains samples of
all 100 mA values shown plus surface mount ver-
sions. To order, please contact Coilcraft.
Specifications Typical Response*
*measured on HP 8753D network analyzer.
Current DCR
Part max L/winding max Isolation
Num-ber* Lines (mA) (µH) (mOhms) (Vrms)
DLF 8000 8 100 28 100 300
DLF 8500 8 500 25 45 300
DLF 4000 4 100 28 100 300
DLF 4500 4 500 24 45 300
DLF 3000 3 100 28 100 300
DLF 3500 3 500 24 45 300
DLF 2000 2 100 28 100 300
DLF 2500 2 500 24 45 300
* For optional cover add “C” to part number. Not available on 4 line parts.
Document 149
Specifications subject to change without notice. Document 149 Revised 11/21/02
