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© Coilcraft Inc. 2016
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
Combination Line Filter Chokes
Document 144-1
Document 144-1 Revised 02/03/16
This series of chokes is intended for use in AC line filters
for switching power supplies. They combine common and
differential mode filtering in a single component.
By using these parts, designers can eliminate two extra fil-
ter chokes compared to a standard common mode choke.
The unique combination of special windings and materials
provides much better filtering performance than either a
common mode choke or a single winding inductor alone.
The differential filtering frequency response is designed
to provide filtering at higher frequencies while still allow-
ing the AC line power to pass through without loss. This
characteristic is demonstrated in the Differential Mode
Attenuation curves.
Common mode Common mode Differential mode
Part impedance inductance inductance
Irms
1
DCR max
2
Isolation
3
number max (kOhms) typ (mH) typ (µH) (A) (Ohms) (Vrms)
P3717-AL 597 @ 0.18 MHz 25.0 1000 3.0 0.30 1500
Q4007-AL 277 @ 0.66 MHz 4.5 150 5.0 0.06 1500
Q4018-AL 43.3 @ 1.2 MHz 1.5 35 10 0.02 1500
1. Current that causes a 40°C temperature rise from 25°C ambient. This
information is for reference only and does not represent absolute maxi-
mum ratings.
2. DCR is specified per winding.
3. Isolation (hipot) measured for one minute.
4. Electrical specifications at 25°C.
Common and
Differential Mode
Core material Ferrite
Terminations RoHS compliant tin-silver over tin over copper.
Weight 100 – 113 g
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°C.
Tray packaging: –40°C to +80°C
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging 30 per tray (after 5/09); 16 per tray (prior to 6/09)
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
