Document 528-1
Shielded Coupled Inductors MSD1260
Tight coupling (k 0.98)
500 Vrms, one minute isolation (hipot) between windings
Ideal for use in a variety of circuits including flyback, multi-output
buck, SEPIC and Zeta.
High inductance, high efficiency and excellent current handling
Can also be used as two single inductors connected in series
or parallel, as a common mode choke or as a 1 : 1 transformer.
+ +
D
C
V
L1 L2
OUT
C
V
IN
SW
Typical Flyback Converter
+
D
V
OUT
C
AUX
L2
0.484
++
max
12,3
L1
V
V C OUT
D
IN
SW
Dot indicates pin1
123
0.484 Dash number
max
Typical Buck Converter with auxiliary output
12,3
X
Internal code
D
++
L1 C1
V
V C Q L2 C OUT
0.236 0.008*
IN
6,0 0,2
Recommended
LandPattern
Typical SEPIC schematic
0.197 0.217
5,0 5,5
0.157
0.138
4,0 ++
3,5
2 1
3 4 L2
C1
0.197 0.177
Q
5,0
4,5 V
D
3 4 V CCL1 OUT
2 1
IN
0.059 0.079
Typical Zeta schematic
1,5 2,0
For optional tin-lead and tin-silver-copper
*
terminations, dimensions are for the mounted
part.Dimensions before mounting can be
1 2
an additional 0.012 inch (0,3 mm).
L1
L2
inches
Dimensions are in
mm
3 4
Document 528-1 Revised 11/09/15
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com Coilcraft Inc. 2017
This product may not be used in medical or high
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
risk applications without prior Coilcraft approval.
China +86-21-6218 8074 sales@coilcraft.com.cn
Specification subject to change without notice.
Singapore + 65-6484 8412 sales@coilcraft.com.sg Please check web site for latest information.Document 528-2
Shielded Coupled Inductors MSD1260 Series
Irms (A)
Coupling Leakage
2 3 4 5 6
Inductance DCR max SRF typ coefficient Inductance Isat both one
1 7 8
Part number (H) (Ohms) (MHz) typ typ (H) (A) windings winding
MSD1260-472ML_ 4.7 20% 0.036 32.0 0.98 0.20 10.3 3.16 4.47
MSD1260-562ML_ 5.6 20% 0.040 31.0 0.98 0.20 9.66 3.00 4.24
MSD1260-682ML_ 6.8 20% 0.048 28.0 0.98 0.24 9.21 2.75 3.88
MSD1260-822ML_ 8.2 20% 0.052 25.0 0.98 0.25 8.55 2.63 3.72
MSD1260-103ML_ 10 20% 0.060 22.0 0.99 0.26 7.40 2.45 3.46
MSD1260-123ML_ 12 20% 0.074 21.0 0.99 0.28 6.86 2.21 3.12
MSD1260-153ML_ 15 20% 0.085 17.6 0.99 0.32 6.09 2.06 2.92
MSD1260-183ML_ 18 20% 0.097 17.0 0.99 0.40 5.30 1.93 2.73
MSD1260-223ML_ 22 20% 0.116 15.0 0.98 0.68 5.01 1.76 2.49
MSD1260-273ML_ 27 20% 0.124 13.6 0.99 0.50 4.66 1.70 2.41
MSD1260-333ML_ 33 20% 0.134 12.7 0.99 0.65 4.22 1.64 2.32
MSD1260-393ML_ 39 20% 0.142 11.7 0.99 1.09 3.80 1.59 2.25
MSD1260-473ML_ 47 20% 0.174 8.7 0.99 0.80 3.25 1.44 2.03
MSD1260-563ML_ 56 20% 0.198 7.6 0.99 0.75 3.07 1.35 1.91
MSD1260-683ML_ 68 20% 0.216 6.1 >0.99 0.57 2.83 1.29 1.83
MSD1260-823ML_ 82 20% 0.274 5.3 0.99 1.52 2.55 1.15 1.62
MSD1260-104ML_ 100 20% 0.322 5.0 0.99 1.41 2.20 1.06 1.50
MSD1260-124KL_ 120 10% 0.418 4.4 0.99 1.34 2.05 0.93 1.31
MSD1260-154KL_ 150 10% 0.476 4.0 0.99 1.52 1.82 0.87 1.23
MSD1260-184KL_ 180 10% 0.536 3.6 0.99 1.80 1.60 0.82 1.16
MSD1260-224KL_ 220 10% 0.691 3.2 >0.99 1.60 1.51 0.72 1.02
MSD1260-274KL_ 270 10% 0.806 2.8 >0.99 2.23 1.41 0.67 0.95
MSD1260-334KL_ 330 10% 1.09 2.5 >0.99 2.39 1.28 0.57 0.81
MSD1260-394KL_ 390 10% 1.20 2.3 >0.99 3.72 1.16 0.55 0.77
MSD1260-474KL_ 470 10% 1.59 2.1 >0.99 2.89 1.00 0.48 0.67
MSD1260-564KL_ 560 10% 1.81 2.0 >0.99 2.55 0.95 0.45 0.63
MSD1260-684KL_ 680 10% 2.06 1.8 >0.99 5.76 0.88 0.42 0.59
MSD1260-824KL_ 820 10% 2.65 1.5 >0.99 2.86 0.79 0.37 0.52
MSD1260-105KL_ 1000 10% 3.06 1.2 >0.99 4.32 0.69 0.34 0.49
5. Leakage Inductance is for L1 and is measured with L2 shorted.
1. When ordering, please specify termination and packaging codes:
6. DC current, at which the inductance drops 30% (typ) from its value
without current. It is the sum of the current flowing in both windings.
MSD1260-105KLD
7. Equal current when applied to each winding simultaneously that causes
Termination: L = RoHS compliant matte tin over nickel over phos
a 40C temperature rise from 25C ambient. This information is for refer-
bronze.
ence only and does not represent absolute maximum ratings. To predict
Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or
temperature rise go to online calculator.
S = non-RoHS tin-lead (63/37).
8. Maximum current when applied to one winding that causes a 40C tem-
Packaging: D = 13 machine-ready reel. EIA-481 embossed plastic
perature rise from 25C ambient. This information is for reference only
tape (500 parts per full reel).
and does not represent absolute maximum ratings. To predict tempera-
B = Less than full reel. In tape, but not machine ready.
ture rise go to online calculator.
To have a leader and trailer added ($25 charge), use
9. Electrical specifications at 25C.
code letter D instead.
Refer to Doc 639 Selecting Coupled Inductors for SEPIC Applications.
2. Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms,
Refer to Doc 362 Soldering Surface Mount Components before soldering.
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 Coupled Inductor Core and Winding Loss Calculator
value.
This web-based utility allows you to enter frequency, peak-to-peak
4. SRF measured using an Agilent/HP 4191A or equivalent. When leads
(ripple) current, and Irms current to predict temperature rise and overall
are connected in parallel, SRF is the same value.
losses, including core loss. Go to online calculator.
Document 528-2 Revised 11/09/15
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com Coilcraft Inc. 2017
This product may not be used in medical or high
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
risk applications without prior Coilcraft approval.
China +86-21-6218 8074 sales@coilcraft.com.cn
Specification subject to change without notice.
Singapore + 65-6484 8412 sales@coilcraft.com.sg Please check web site for latest information.