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Coupled Power Inductors
PFD3215 Series

  • Small coupled shielded power inductor – 3.3 × 2.3 mm footprint, 1.5 mm high
  • Designed for Flyback, SEPIC, Ćuk, Zeta and other applications such as  common mode chokes and wideband transformers
  • See Selecting inductors for SEPIC
  • 250 Vrms, one minute interwinding isolation
  • Excellent coupling coefficient: up to 0.98
  • RoHS-compliant, halogen free. 260°C compatible. Silver-palladium-platinum-glass frit terminations

SPECIFICATIONS


 For Flyback Applications
Part number1
Click for samples
Inductance
at 0 A2
±20% (µH)
Inductance
at Ipk3
±20% (µH)
DCR max4
(Ohms)
Leakage
L typ5
(µH)
Turns ratio Ipk3
(A)
PFD3215-391ME_ 0.39 0.27 0.070 0.08 1 : 1 2.40
PFD3215-102ME_ 1.0 0.70 0.123 0.09 1 : 1 1.65
PFD3215-182ME_ 1.8 1.26 0.250 0.11 1 : 1 1.30
PFD3215-222ME_ 2.2 1.54 0.265 0.13 1 : 1 1.15
PFD3215-332ME_ 3.3 2.31 0.335 0.14 1 : 1 0.90
PFD3215-472ME_ 4.7 3.29 0.442 0.17 1 : 1 0.80
PFD3215-682ME_ 6.8 4.76 0.600 0.25 1 : 1 0.70
PFD3215-103ME_ 10 7.00 1.25 0.31 1 : 1 0.55
1 When ordering, please specify packaging code: e.g. PFD3215-103MEC
Packaging:

 

C = 7" machine-ready reel
EIA-481 embossed plastic tape 2000 parts per full reel).
B = Less than full reel
In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter C instead.
D = 13" machine-ready reel
EIA-481 embossed plastic tape. Factory order only, not stocked (7500 parts per full reel).
2 Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent.
3 Peak primary current drawn at minimum input voltage.
4 DCR is for each winding. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
5 Leakage inductance is for primary winding and is measured with the secondary shorted.
6 Ambient temperature range: −40°C to +85°C with Ipk current.
7 Storage temperature range: Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C
8 Maximum part temperature: +125°C (Ambient + temperature rise)
9 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
10 Electrical specifications at 25°C.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.
Refer to Soldering Coilcraft Components before soldering.
 For SEPIC Applications
Part number1
Click for samples
Inductance2
±20% (µH)
DCR
max3
(Ohms)
SRF
typ4
(MHz)
Coupling
coefficient
typ
Leakage
L typ5
(µH)
Isat (A)6 Irms (A)
10%
drop
20%
drop
30%
drop
both
windings7
one
winding8
PFD3215-391ME_ 0.39 0.070 600 0.89 0.08 2.10 2.30 2.40 0.98 1.39
PFD3215-102ME_ 1.0 0.123 400 0.95 0.09 1.35 1.55 1.65 0.85 1.20
PFD3215-182ME_ 1.8 0.250 230 0.97 0.11 1.00 1.20 1.30 0.60 0.85
PFD3215-222ME_ 2.2 0.265 270 0.97 0.13 0.95 1.05 1.15 0.57 0.81
PFD3215-332ME_ 3.3 0.360 190 0.98 0.14 0.75 0.83 0.90 0.55 0.78
PFD3215-472ME_ 4.7 0.450 175 0.98 0.17 0.65 0.75 0.80 0.51 0.72
PFD3215-682ME_ 6.8 0.630 155 0.98 0.25 0.55 0.65 0.70 0.40 0.57
PFD3215-103ME_ 10 1.25 110 0.98 0.31 0.45 0.50 0.55 0.27 0.38
1 When ordering, please specify packaging code: e.g. PFD3215-103MEC
Packaging:

 

C = 7" machine-ready reel
EIA-481 embossed plastic tape 2000 parts per full reel).
B = Less than full reel
In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter C instead.
D = 13" machine-ready reel
EIA-481 embossed plastic tape. Factory order only, not stocked (7500 parts per full reel).
2 Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads are connected in parallel, inductance is the same value. When leads are connected in series, inductance is four times the value
3 DCR is for each winding. When leads are connected in parallel, DCR is half the value. When leads are connected in series, DCR is twice the value.
4 SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value.
5 Leakage inductance is for L1 and is measured with L2 shorted.
6 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.
7 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.
8 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.
9 Ambient temperature range: −40°C to +85°C with Irms current.
10 Storage temperature range: Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C
11 Maximum part temperature: +125°C (Ambient + temperature rise)
12 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
13 Electrical specifications at 25°C.
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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Updated: October 05, 2015