DLF Series

Data Line EMI Filters

Our DLF Series data line EMI filters provide common mode and differential mode filtering in a single component. They reduce conducted noise by a factor of 32 from 5 MHz to 300 MHz and pass data frequencies below 200 MHz with minimal attenuation.

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)

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Part number

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Count	Unit price
1	$8.59
100	$7.02
350	$5.26
700	$3.16
1400	$2.46
2800	$2.11
5000	$1.93

For high volume or non-stock items, request a quote.

Cover

Standard

Termination

L = Tin-silver

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Part number

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Designer's Kit:

Kit	Values	Price
D303	17 (4 of each)	$75.00

Specifications

Electrical specifications at 25°C.

Part number 1	Lines	Common mode peak impedance (kΩ)	Cutoff frequency (MHz) 2	Inductance min (µH) 3	Irms (mA)	DCR max (mΩ) 4	Isolation Voltage (Vrms) 5
Part number 1	Lines	Common mode peak impedance (kΩ)	Cutoff frequency (MHz) 2	Inductance min (µH) 3	Irms (mA)	DCR max (mΩ) 4	Isolation Voltage (Vrms) 5
DLF 8000L	8	2.03 @ 8.3 MHz	200	28	100	100	300
DLF 8500L	8	0.60 @ 40 MHz	1000	5	500	45	300
DLF 4000L	4	2.13 @ 12 MHz	390	28	100	100	300
DLF 4500L	4	1.62 @ 14 MHz	730	24	500	45	300
DLF 3000L	3	1.98 @ 13 MHz	650	28	100	100	300
DLF 3500L	3	1.45 @ 15 MHz	670	24	500	45	300
DLF 2000L	2	2.03 @ 14 MHz	660	28	100	100	300
DLF 2500L	2	1.55 @ 14 MHz	610	24	500	45	300

Notes

For optional cover add "C" to part number just before the "L": e.g. DLF 8500CL. Not available on 3500, 4000 and 4500 parts.
Frequency at which the differential mode attenuation equals 3 dB.
Inductance is per winding.
DCR is per winding, measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
Interwinding isolation measured for one minute.

Termination:

Tin-silver over tin over phos bronze.

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +85°C

Storage temperature range:

Component: –40°C to +85°C.
Tape and reel packaging: –40°C to +80°C

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Performance curves

Attenuation (Ref: 50 Ohms)

Impedance vs Frequency

Schematics

Physical characteristics

Without Optional Cover

With Optional Cover

Part Number	Weight typ (g)	Packaging
DLF 2000L	0.74	75 per tube
DLF 2000CL	1.32	64 per tube
DLF 2500L	0.78	75 per tube
DLF 2500CL	1.36	64 per tube
DLF 3000L	0.83	75 per tube
DLF 3000CL	1.41	64 per tube
DLF 3500L	0.91	75 per tube
DLF 4000L	0.95	55 per tube
DLF 4500L	1.09	55 per tube
DLF 8000L	1.56	27 per tube
DLF 8000CL	2.7	25 per tube
DLF 8500L	2.22	27 per tube
DLF 8500CL	3.36	25 per tube

General specification

Core Material:

Ferrite

Weight:

0.74 g - 3.36 g

Soldering/Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

Resistance to soldering heat:

Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

DLF Series

Data Line EMI Filters