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+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2018
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 580-1
Shielded Coupled Inductors
LPD4012
Core material Ferrite
Core and winding loss Go to online calculator
Weight 54 – 64 mg
Environmental RoHS compliant, halogen free
Terminations RoHS compliant matte tin over nickel over silver.
Other terminations available at additional cost.
Ambient temperature –40°C to +85°C with (40°C rise) Irms current.
Maximum part temperature +125°C (ambient + temp rise).
Storage temperature Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Winding to winding isolation 100 Vrms, one minute
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
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
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Document 580-1 Revised 02/24/17
Dimensions are in inches
mm
0.060
1,52
0.0433 ±0.004
1,10 ±0,10
Dash
number Internal
code
Dot indicates pin 1
0.155 ±0.003
3,94 ±0,076
0.155 ±0.003
3,94 ±0,076
XXX X
14
23
Recommended
Land Pattern
0.174
4,40
0.103
2,61
0.103
2,61
0.049
1,25
0.049
1,25
0.174
4,40
0.031
0,78
45°
typ
14
23
Dimensions are of the case not including
the termination. For maximum overall
dimensions including the termination, add
0.005 in/0.13 mm.
For optional tin-lead and tin-silver-copper
terminations, dimensions are for the
mounted part. Dimensions before mounting
can be an additional 0.005 in/0.13 mm.
*
*
*
*
L1 L2
++
–
–
D
C
C
Typical Flyback Converter
VOUT
V
IN
SW
L1
L2
++
+
––
–
D
D
C
C
SW
Typical Buck Converter with auxiliary output
VOUT
VOUTAU
X
V
IN
Typical Zeta schematic
VOUT
V
IN L1
L2
QC1
CC
++
––
D
Typical SEPIC schematic
VOUT
V
IN
L1
L2
Q
C1
C
C
++
––
D
• Only 1.1 mm high and 4 mm square
• Ideal for use in flyback, multi-output buck and SEPIC
applications.
• High inductance, high efficiency and excellent current handling
• Can also be used as two single inductors connected in
series or parallel or as a common mode choke.
2
14
3
L1
L2
Packaging 1000/7″ reel; 3500/13″ reel Plastic tape: 12 mm wide,
0.25 mm thick, 8 mm pocket spacing, 1.32 mm pocket depth
Recommended pick and place nozzle OD: 4 mm; ID: ≤ 2 mm
Coupled Inductors for SEPIC Applications
–
LPD4012 Series
Document 580-2 Revised 02/15/11
Document 580-2
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2018
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 580-2 Revised 02/27/17
Coupled Inductor Core and Winding Loss Calculator
This web-based utility allows you to enter frequency, peak-to-peak
(ripple) current, and Irms current to predict temperature rise and
overall losses, including core loss. Go to online calculator.
Coupling Leakage Isat (A)6 Irms (A)
Inductance2 DCR max3 SRF typ4 coefficient
L typ5 10% 20% 30% both one
Part number1 (µH) (Ohms) (MHz) typ (µH) drop drop drop windings7
winding8
LPD4012-331NR_ 0.33 ±30% 0.042 255 0.94 0.06 5.2 5.4 5.6 1.87 2.65
LPD4012-561NR_ 0.56 ±30% 0.087 185 0.95 0.08 3.7 3.8 3.9 1.30 1.84
LPD4012-821NR_ 0.82 ±30% 0.100 130 0.97 0.09 3.2 3.3 3.4 1.21 1.72
LPD4012-152NR_ 1.5 ±30% 0.185 86 0.97 0.11 2.50 2.81 2.91 1.15 1.62
LPD4012-222NR_ 2.2 ±30% 0.235 70 0.98 0.14 2.30 2.40 2.50 0.95 1.35
LPD4012-332NR_ 3.3 ±30% 0.320 48 0.98 0.16 1.80 1.90 2.00 0.75 1.06
LPD4012-472MR_ 4.7 ±20% 0.500 39 0.98 0.18 1.70 1.80 1.90 0.65 0.92
LPD4012-562MR_ 5.6 ±20% 0.620 32 0.99 0.20 1.60 1.70 1.80 0.55 0.78
LPD4012-682MR_ 6.8 ±20% 0.530 31 0.99 0.22 1.20 1.52 1.63 0.60 0.86
LPD4012-822MR_ 8.2 ±20% 0.600 29 0.99 0.24 1.10 1.20 1.30 0.55 0.78
LPD4012-103MR_ 10 ±20% 0.750 25 0.99 0.26 0.98 1.00 1.10 0.50 0.71
LPD4012-153MR_ 15 ±20% 1.13 21 0.99 0.30 0.90 0.92 0.94 0.43 0.60
LPD4012-223MR_ 22 ±20% 1.63 15 0.99 0.34 0.70 0.82 0.84 0.34 0.48
LPD4012-333MR_ 33 ±20% 1.83 12 >0.99 0.41 0.37 0.57 0.58 0.31 0.44
LPD4012-473MR_ 47 ±20% 2.52 8.8 >0.99 0.51 0.33 0.39 0.40 0.28 0.39
LPD4012-683MR_ 68 ±20% 3.23 7.8 >0.99 0.66 0.27 0.36 0.37 0.25 0.36
LPD4012-823MR_ 82 ±20% 3.66 7.3 >0.99 0.75 0.27 0.27 0.29 0.23 0.31
LPD4012-104MR_ 100 ±20% 4.76 6.1 >0.99 0.86 0.22 0.28 0.29 0.20 0.27
LPD4012-124MR_ 120 ±20% 5.54 5.3 >0.99 0.98 0.21 0.26 0.27 0.19 0.27
LPD4012-154MR_ 150 ±20% 6.90 4.6 >0.99 1.19 0.18 0.26 0.27 0.17 0.23
LPD4012-184MR_ 180 ±20% 8.75 4.1 >0.99 1.40 0.16 0.21 0.23 0.14 0.18
LPD4012-224MR_ 220 ±20% 11.24 3.3 >0.99 1.66 0.15 0.16 0.17 0.12 0.17
LPD4012-334MR_ 330 ±20% 17.00 2.8 >0.99 2.45 0.13 0.16 0.16 0.10 0.14
1. Please specify termination and packaging codes:
LPD4012-334MRC
Termination: R = RoHS compliant, matte tin over nickel over silver.
Special order:
Q = RoHS tin-silver-copper (95.5/4/0.5) or
P = non-RoHS tin-lead (63/37).
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic
tape (1000 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 (3500 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. DC current at 25°C that causes the specified inductance drop from its
value without current. It is the sum of the current flowing in both windings.
7. 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.
8. 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.
9. Electrical specifications at 25°C.
Refer to Doc 639 “Selecting Coupled Inductors for SEPIC Applications.”
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Coupled Inductors for SEPIC Applications
–
LPD4012 Series
Document 580-3 Revised 02/15/11
Document 580-3
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2018
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 580-3 Revised 02/27/17
Typical L vs Current Typical L vs Frequency
0.1
1
10
1000
100
0.01 0.1
11
0
Current (A)
Inductance (µH)
330 µH
10 µH
33 µH
100 µH
3.3 µH
1.5 µH
0.33 µH
0.1
1
10
1000
100
0.1 1 10
100
Frequency (MHz)
Inductance (µH)
330 µH
10 µH
33 µH
100 µH
3.3 µH
1.5 µH
0.33 µH
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Coilcraft:
LPD4012-153MLB LPD4012-823MLC LPD4012-682MLB LPD4012-223MLC LPD4012-154MLC LPD4012-561NLB
LPD4012-184MLC LPD4012-223MLB LPD4012-224MLB LPD4012-472MLC LPD4012-683MLB LPD4012-124MLB
LPD4012-331NLC LPD4012-152NLC LPD4012-473MLB LPD4012-332NLB LPD4012-334MLC LPD4012-822MLC
LPD4012-334MLB LPD4012-561NLC LPD4012-153MLC LPD4012-823MLB LPD4012-103MLC LPD4012-562MLC
LPD4012-333MLC LPD4012-154MLB LPD4012-222NLC LPD4012-562MLB LPD4012-821NLB LPD4012-683MLC
LPD4012-224MLC LPD4012-222NLB LPD4012-472MLB LPD4012-333MLB LPD4012-331NLB LPD4012-152NLB
LPD4012-332NLC LPD4012-184MLB LPD4012-682MLC LPD4012-473MLC LPD4012-104MLC LPD4012-822MLB
LPD4012-821NLC LPD4012-104MLB LPD4012-103MLB LPD4012-124MLC LPD4012-184MRC LPD4012-224MRC
LPD4012-332NRB LPD4012-333MRC LPD4012-472MRB LPD4012-562MRB LPD4012-822MRC LPD4012-823MRB
LPD4012-334MRB LPD4012-683MRC LPD4012-682MRB LPD4012-682MRC LPD4012-683MRB LPD4012-
821NRB LPD4012-821NRC LPD4012-822MRB LPD4012-334MRC LPD4012-472MRC LPD4012-473MRB
LPD4012-561NRB LPD4012-561NRC LPD4012-562MRC LPD4012-223MRB LPD4012-223MRC LPD4012-224MRB
LPD4012-331NRC LPD4012-332NRC LPD4012-333MRB LPD4012-331NRB LPD4012-103MRB LPD4012-
473MRC LPD4012-104MRB LPD4012-153MRC LPD4012-222NRC LPD4012-152NRC LPD4012-153MRB
LPD4012-154MRB LPD4012-154MRC LPD4012-184MRB LPD4012-222NRB LPD4012-104MRC LPD4012-823MRC
LPD4012-103MRC LPD4012-124MRB LPD4012-124MRC LPD4012-152NRB
