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

3D Model Datasheet S-Param

PFD3215 Series

Coupled Power Inductors

Small coupled shielded power inductor – 3.3 × 2.3 mm footprint, 1.5 mm high
Excellent as low-power isolation transformers
Great for Flyback, SEPIC, Ćuk, Zeta and other applications
Magnetically shielded for compact size and minimized EMI

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Part number

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Count	Unit price
1	$0.80
100	$0.72
500	$0.59
1000	$0.51
2500	$0.41
5000	$0.38

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

Tolerance

M = 20%

Termination

E = Silver-palladium-platinum-glass frit

Packaging

C = 7" machine-ready reel

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Specifications

Electrical specifications at 25°C.

For Flyback Applications

Part number 1 (Hover for schematics)	Inductance (µH) 2 (Tolerance: ±20%)	DCR max (Ω) 3	Isolation Voltage (V)	Leakage Inductance (nH) 5	Turns Ratio
Part number 1 (Hover for schematics)	Inductance (µH) 2 (Tolerance: ±20%)	DCR max (Ω) 3	Isolation Voltage (V)	Leakage Inductance (nH) 5	Turns Ratio
PFD3215-391ME_	0.39	0.070	250	80	1 : 1
PFD3215-102ME	1.0	0.12	250	90	1 : 1
PFD3215-182ME_	1.8	0.25	250	110	1 : 1
PFD3215-222ME_	2.2	0.27	250	130	1 : 1
PFD3215-332ME_	3.3	0.36	250	140	1 : 1
PFD3215-472ME	4.7	0.45	250	170	1 : 1
PFD3215-682ME_	6.8	0.63	250	250	1 : 1
PFD3215-103ME_	10	1.3	250	310	1 : 1

For SEPIC Applications

Part number 1 (Hover for schematics)	Inductance (µH) 2 (Tolerance: ±20%)	DCR max (Ω) 3	SRF typ (MHz) 4	Coupling coefficient	Leakage Inductance (nH) 5	Isat (A) 6			Irms (A)
Part number 1 (Hover for schematics)	Inductance (µH) 2 (Tolerance: ±20%)	DCR max (Ω) 3	SRF typ (MHz) 4	Coupling coefficient	Leakage Inductance (nH) 5	10% drop	20% drop	30% drop	both windings 7	one winding 8
PFD3215-391ME_	0.39	0.070	600	0.89	80	2.1	2.3	2.4	0.98	1.4
PFD3215-102ME	1.0	0.12	400	0.95	90	1.4	1.6	1.7	0.85	1.2
PFD3215-182ME_	1.8	0.25	230	0.97	110	1.0	1.2	1.3	0.60	0.85
PFD3215-222ME_	2.2	0.27	270	0.97	130	0.95	1.1	1.2	0.57	0.81
PFD3215-332ME_	3.3	0.36	190	0.98	140	0.75	0.83	0.90	0.55	0.78
PFD3215-472ME	4.7	0.45	175	0.98	170	0.65	0.75	0.80	0.51	0.72
PFD3215-682ME_	6.8	0.63	155	0.98	250	0.55	0.65	0.70	0.40	0.57
PFD3215-103ME_	10	1.3	110	0.98	310	0.45	0.50	0.55	0.27	0.38

Notes

When ordering, please specify packaging code: e.g. PFD3215-103MEC
Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent.
For SEPIC: When leads are connected in parallel, inductance is the same value. When leads are connected in series, inductance is four times the value.
DCR is for each winding. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
For SEPIC: When leads are connected in parallel, DCR is half the value. When leads are connected in series, DCR is twice the value.
For SEPIC: SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value.
Leakage inductance is for primary winding and is measured with the secondary shorted.
For SEPIC: Isat: DC current, at which the inductance drops the specified amount from its value without current. It is the sum of the current flowing in both windings.
For SEPIC: Irms, both windings: Equal current when applied to each winding simultaneously that causes a 40°C temperature rise from 25°C ambient. Determine temperature rise.
For SEPIC: Irms, one winding: Maximum current when applied to one winding that causes a 40°C temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. Determine temperature rise.

Termination:

Silver-palladium-platinum-glass frit.

Packaging:

C = 7″ machine-ready reel. EIA-481 embossed plastic tape (2000 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C.
D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (7500 parts per full reel).

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +85°C with Irms current

Storage temperature range:

Component: –40°C to +125°C
Tape and reel packaging: –40°C to +80°C

Maximum part temperature:

+125°C (ambient + temp rise)

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

See FIT/MTBF Calculations

Performance curves

Inductance vs Current

Inductance vs. Frequency

Schematics

Physical characteristics

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
2000	7500*	178/330	60/100	13	14,4	8,4	12	4	4	2	1,65	0,23

* Special order

General specification

Core Material:

Ferrite

Weight:

18 – 28 mg

Packaging:

2000/7″ reel; 7500/13″ reel Plastic tape: 12 mm wide, 0.23 mm thick, 4 mm pocket spacing, 1.65 mm pocket depth

Winding to Winding Isolation:

250 Vrms, one minute

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 with pure water or alcohol only. More info.

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PFD3215 Series

Coupled Power Inductors

Selected configuration not available

Specifications

For Flyback Applications

For SEPIC Applications

Termination:

Packaging:

Performance curves

Inductance vs Current

Inductance vs. Frequency

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

Warning