Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2010
Document 661-1
Revised 09/18/09
© Coilcraft, Inc. 2010
Document 661-1
L1
L2
Q1
C1
C2
+
++
––
D1
VOUT
VIN
Load
At only 1.4 mm high and 3 mm square, the LPD3015
is Coilcraft’s smallest shielded coupled inductor. The
excellent coupling coefficient (k
≥ 0.97) makes it ideal
for use in SEPIC applications. In SEPIC topologies,
the required inductance for each winding in a coupled
inductor is half the value needed for two separate
inductors, allowing selection of a part with lower DCR
and higher current handling.
These inductors provide high efficiency and excellent
current handling in a rugged, low cost part.
They can also be used as two single inductors con-
nected in series or parallel, as a common mode choke
or as a 1 : 1 transformer.
0.118 ±0.003
3,00 ±0,076
0.118 ±0.003
3,00 ±0,076
0.055 ±0.004
1,4 ±0,1
Dash
number
XXX
Dot indicates pin 1
14
2
3
0.039
0,99
0.130
3,30
0.094
2,30
0.094
2,30
0.040
1,02
0.040
1,02
0.130
3,30
0.022
0,54
45°
typ
1
4
2
3
Core material Ferrite
Weight 45 – 52 mg
Terminations RoHS compliant silver-palladium-platinum-glass frit.
Other terminations available at additional cost.
Ambient temperature –40°C to +85°C with
Irms current, +85°C to
+125°C with derated current
Storage temperature Component: –40°C to +125°C.
Packaging: –40°C to +80°C
Winding to winding isolation 100 Vrms
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
Packaging 1000/7
″reel; 3500/13″ reel Plastic tape: 12 mm wide,
0.26 mm thick, 8 mm pocket spacing, 1.65 mm pocket depth
Recommended pick and place nozzle OD: 3 mm; ID:
≤ 1.5 mm
PCB washing Only pure water or alcohol recommended
Dimensions are in
inches
mm
2
1
4
3
L1
L2
CoupledInductors–LPD3015Series ForSEPIC
Applications
Typical SEPIC schematic
Refer to Application Note, Document 639,
“Selecting Coupled Inductors for SEPIC Applications”
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