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Introduction
Specifications
Environmental
Performance curves
Schematics
Physical characteristics
Tape & Reel
Soldering/Washing

Datasheet 3D Model

DFC7045 Series

Common Mode Chokes

The DFC7045 Series automotive-grade common mode chokes feature a compact chip-style construction, manufactured with a highly automated process to ensure exceptional quality, reliability, and cost-effectiveness.
Optimized for high frequency common mode noise suppression, the DFC7045 offers a small footprint with high current capability, making it an excellent choice for EMI filtering in power lines.

Automotive-qualified, this series is ideal for automotive DC/DC converters and power supplies that require compact, high-performance EMI suppression in space-constrained designs.

Miniature, low-profile common mode choke; only 3.3 mm tall
Smaller footprint and higher current capability than typical parts on the market
Provides exceptional high-frequency common mode noise attenuation
Designed and fabricated for systems mounted in harsh automotive conditions
AEC-Q200 qualified

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Part number

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Count	Unit price
1	$1.42
100	$1.33
250	$1.23
500	$1.13
1000	$1.03

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

Termination

R = Tin over nickel over silver glass frit

Packaging

C = 7" machine-ready reel

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Specifications

Electrical specifications at 25°C.

Part number 1	Lines	Common mode peak impedance (Ω)	Inductance (µH) 2 (Tolerance: ±25%)	Leakage Inductance max (µH) 3	Irms (A) 4	DCR max (mΩ) 5	Isolation Voltage (Vrms) 6
Part number 1	Lines	Common mode peak impedance (Ω)	Inductance (µH) 2 (Tolerance: ±25%)	Leakage Inductance max (µH) 3	Irms (A) 4	DCR max (mΩ) 5	Isolation Voltage (Vrms) 6
DFC7045-222RC	2	250 @ 100 MHz	2.2	0.20	9.1	10	1060
DFC7045-372RC	2	450 @ 100 MHz	3.7	0.35	7.8	17	1060
DFC7045-502RC	2	710 @ 100 MHz	5.0	0.44	6.7	21	1060

Notes

When ordering, please specify termination and packaging codes: e.g. DFC7045-502RC
Inductance is measured at 100 kHz, 0.1 Vrms, 0 ADC on an Agilent 4263B (or equivalent).
Leakage Inductance LL is measured at 100 kHz, 0.1 Vrms on an Agilent 4263B (or equivalent) with pins 3,4 shorted.
Irms: Current that causes a 40°C temperature rise from 25°C.
DCR is measured on a Keithley 580 Micro-ohmmeter (or equivalent). For other operating temperatures, use this DCR at Temperature calculator.
1500 VDC / 1060 Vrms, one minute isolation (hipot) measured between primary and secondary.

Termination:

R = RoHS compliant tin over nickel over silver glass frit.

Packaging:

C = 7″ machine-ready reel. EIA-481 embossed plastic tape (500 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (2200 parts per full reel).

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +125°C with Irms current

Storage temperature range:

Component: –40°C to +140°C.
Tape and reel packaging: –40°C to +80°C

Maximum part temperature:

+140°C (ambient + temp rise)

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

See FIT/MTBF Calculations

Performance curves

Attenuation vs Frequency

Common Mode

Impedance vs Frequency

Common Mode

Attenuation vs Frequency

Differential Mode

Impedance vs Frequency

Differential Mode

Schematics

Physical characteristics

A max	B max	C max	D	E	F	G
0.281	0.181	0.134	0.008	0.059	0.053	0.169	inches
7,15	4,60	3,40	0,203	1,50	1,35	4,30	mm

Tape and Reel specification

Parts per reel		Reel dimensions (mm)					Tape dimensions (mm)						Orientation
7" (178 mm)	13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
500	2200*	178/330	60/100	13	22,4	16,4	16	8	4	2	3,5	0,4

*Special order

General specification

Core Material:

Ferrite

Weight:

0.53 – 0.54 g

Packaging:

500/7″ reel; 2200/13″ reel; Plastic tape: 16 mm wide, 0.4 mm thick, 8 mm pocket spacing, 3.5 mm pocket depth

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

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DFC7045 Series

Common Mode Chokes

Selected configuration not available

Specifications

Termination:

Packaging:

Performance curves

Attenuation vs Frequency

Impedance vs Frequency

Attenuation vs Frequency

Impedance vs Frequency

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

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Related product families

Cx - Up to 10 A

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