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Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

LPD4012 Series

Shielded Coupled Power Inductors

RoHS compliant halogen free AEC-Q flag
These are new halogen-free parts, recommended for new designs. They are identical in form, fit and function to the old LPD4012 parts. Existing customers will continue to be supported. (View old data sheet here.)
Coilcraft LPD4012 Series surface-mount 1:1 coupled power inductors are ideal for Flyback, SEPIC, Cuk, Zeta and other applications. Their compact, low-profile design and magnetic shielding make them ideal for high-density circuits.
  • Low-profile design with smaller footprint than MSD Family
  • Ideal for Flyback, SEPIC, Ćuk, Zeta and other applications
  • Magnetically shielded to minimize EMI
  • AEC-Q200 Grade 1 (–40°C to +125°C)
See Selecting inductors for SEPIC

Need parts for space, military or other critical applications?
See Coilcraft AE416PJD Series | See Coilcraft ML416PJD Series | See Coilcraft MS416PJD Series
Buy Now:
Count Unit price
1 $1.10
250 $0.93
500 $0.69
1000 $0.52
2000 $0.44
5000 $0.39

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

. in stock, ready to ship today.
Request a Sample:
Designer's Kit:
Kit Values Price
C463 41 (3 of each) $160.00

Specifications

Electrical specifications at 25°C.

For Flyback Applications

Part number 1
(Hover for schematics)
Inductance (µH) 2 Tolerance (%) DCR max (Ω) 3 Isolation
Voltage (V)
Leakage
Inductance (µH) 5
Turns Ratio
LPD4012-331NR_ 0.33 30 0.042 100 0.060 1 : 1
LPD4012-561NR_ 0.56 30 0.087 100 0.080 1 : 1
LPD4012-821NR_ 0.82 30 0.10 100 0.090 1 : 1
LPD4012-152NR_ 1.5 30 0.19 100 0.11 1 : 1
LPD4012-222NR_ 2.2 30 0.24 100 0.14 1 : 1
LPD4012-332NR_ 3.3 30 0.32 100 0.16 1 : 1
LPD4012-472MR_ 4.7 20 0.50 100 0.18 1 : 1
LPD4012-562MR_ 5.6 20 0.62 100 0.20 1 : 1
LPD4012-682MR_ 6.8 20 0.53 100 0.22 1 : 1
LPD4012-822MR_ 8.2 20 0.60 100 0.24 1 : 1
LPD4012-103MR_ 10 20 0.75 100 0.26 1 : 1
LPD4012-153MR_ 15 20 1.1 100 0.30 1 : 1
LPD4012-223MR_ 22 20 1.6 100 0.34 1 : 1
LPD4012-333MR_ 33 20 1.8 100 0.41 1 : 1
LPD4012-473MR_ 47 20 2.5 100 0.51 1 : 1
LPD4012-683MR_ 68 20 3.2 100 0.66 1 : 1
LPD4012-823MR_ 82 20 3.7 100 0.75 1 : 1
LPD4012-104MR_ 100 20 4.8 100 0.86 1 : 1
LPD4012-124MR_ 120 20 5.5 100 0.98 1 : 1
LPD4012-154MR_ 150 20 6.9 100 1.2 1 : 1
LPD4012-184MR_ 180 20 8.8 100 1.4 1 : 1
LPD4012-224MR_ 220 20 11.2 100 1.7 1 : 1
LPD4012-334MR_ 330 20 17.0 100 2.5 1 : 1

For SEPIC Applications

Part number 1
(Hover for schematics)
Inductance (µH) 2 Tolerance (%) DCR max (Ω) 3 SRF typ (MHz) 4 Coupling coefficient Leakage
Inductance (µH) 5
Isat (A) 6 Irms (A)
10% drop 20% drop 30% drop both windings 7 one winding 8
LPD4012-331NR_ 0.33 30 0.042 255 0.94 0.060 5.2 5.4 5.6 1.9 2.7
LPD4012-561NR_ 0.56 30 0.087 185 0.95 0.080 3.7 3.8 3.9 1.3 1.8
LPD4012-821NR_ 0.82 30 0.10 130 0.97 0.090 3.2 3.3 3.4 1.2 1.7
LPD4012-152NR_ 1.5 30 0.19 86.0 0.97 0.11 2.5 2.8 2.9 1.2 1.6
LPD4012-222NR_ 2.2 30 0.24 70.0 0.98 0.14 2.3 2.4 2.5 0.95 1.4
LPD4012-332NR_ 3.3 30 0.32 48.0 0.98 0.16 1.8 1.9 2.0 0.75 1.1
LPD4012-472MR_ 4.7 20 0.50 39.0 0.98 0.18 1.7 1.8 1.9 0.65 0.92
LPD4012-562MR_ 5.6 20 0.62 32.0 0.99 0.20 1.6 1.7 1.8 0.55 0.78
LPD4012-682MR_ 6.8 20 0.53 31.0 0.99 0.22 1.2 1.5 1.6 0.60 0.86
LPD4012-822MR_ 8.2 20 0.60 29.0 0.99 0.24 1.1 1.2 1.3 0.55 0.78
LPD4012-103MR_ 10 20 0.75 25.0 0.99 0.26 0.98 1.0 1.1 0.50 0.71
LPD4012-153MR_ 15 20 1.1 21.0 0.99 0.30 0.90 0.92 0.93 0.43 0.60
LPD4012-223MR_ 22 20 1.6 15.0 0.99 0.34 0.70 0.82 0.84 0.34 0.48
LPD4012-333MR_ 33 20 1.8 12.0 >0.99 0.41 0.37 0.57 0.58 0.31 0.44
LPD4012-473MR_ 47 20 2.5 8.8 >0.99 0.51 0.33 0.39 0.40 0.28 0.39
LPD4012-683MR_ 68 20 3.2 7.8 >0.99 0.66 0.27 0.36 0.37 0.25 0.36
LPD4012-823MR_ 82 20 3.7 7.3 >0.99 0.75 0.27 0.27 0.29 0.23 0.31
LPD4012-104MR_ 100 20 4.8 6.1 >0.99 0.86 0.22 0.28 0.29 0.20 0.27
LPD4012-124MR_ 120 20 5.5 5.3 >0.99 0.98 0.21 0.26 0.27 0.19 0.27
LPD4012-154MR_ 150 20 6.9 4.6 >0.99 1.2 0.18 0.26 0.27 0.17 0.23
LPD4012-184MR_ 180 20 8.8 4.1 >0.99 1.4 0.16 0.21 0.23 0.14 0.18
LPD4012-224MR_ 220 20 11.2 3.3 >0.99 1.7 0.15 0.16 0.17 0.12 0.17
LPD4012-334MR_ 330 20 17.0 2.8 >0.99 2.5 0.13 0.16 0.16 0.10 0.14
Notes
  1. When ordering, please specify termination and packaging codes: e.g. LPD4012-564MRC
  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. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  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. This information is for reference only and does not represent absolute maximum ratings. Determine temperature rise.
  8. Irms, one winding: 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:

  • R = Matte tin over nickel over silver.
  • Q = RoHS tin-silver-copper (95.5/4/0.5). (Special order, added cost)
  • P = non-RoHS tin-lead (63/37). (Special order, added cost)

Packaging:

  • C = 7″ machine-ready reel. EIA-481 embossed plastic tape (1000 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 (3500 parts per full reel).
Environmental
Environmental:
RoHS compliant , halogen free
Ambient temperature range:
–40°C to +125°C with (40°C rise) Irms current
Storage temperature range:
Component: –40°C to +165°C.
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+165°C (ambient + temperature rise).
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

Inductance vs. Current

Inductance vs. Frequency

Schematics

msd1278as-(1).giflpd4012s.gif

Physical characteristics

lpd4012d.gif
dims_inches_mm.gif

Tape and Reel specification

tapereel_pl.gif

 
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 part_or_aj.gif
1000 3500* 178/330 60/100 13 18,4 12,4 12 8 4 2 1,45 0,25
* Special order
 

General specification

Core Material:
Ferrite
Weight:
54 - 64 mg
Packaging:
1000/7″ reel; 3500/13″ reel Plastic tape: 12 mm wide, 0.25 mm thick, 8 mm pocket spacing, 1.45 mm pocket depth
Winding to Winding Isolation:
100 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.
Recommended Pick & Place Nozzle:
OD: 4 mm; ID: ≤2 mm
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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