Coilcraft's MSD1278 Series of 1:1 coupled power inductors feature magnetic shielding for compact packaging and tight winding-to-winding coupling. They are ideal for Flyback, SEPIC, Ćuk, Zeta and other applications.
Electrical specifications at 25°C.
Part number
1
(Hover for schematics)
|
Inductance (µH) 2 | Tolerance (%) | DCR max (Ω) 3 |
Isolation Voltage (V) |
Leakage Inductance (µH) 5 |
Turns Ratio |
---|---|---|---|---|---|---|
MSD1278-472ML_ | 4.7 | 20 | 0.038 | 500 | 0.22 | 1 : 1 |
MSD1278-562ML_ | 5.6 | 20 | 0.046 | 500 | 0.23 | 1 : 1 |
MSD1278-682ML_ | 6.8 | 20 | 0.048 | 500 | 0.22 | 1 : 1 |
MSD1278-822ML_ | 8.2 | 20 | 0.050 | 500 | 0.34 | 1 : 1 |
MSD1278-103ML_ | 10 | 20 | 0.058 | 500 | 0.34 | 1 : 1 |
MSD1278-123ML_ | 12 | 20 | 0.062 | 500 | 0.36 | 1 : 1 |
MSD1278-153ML_ | 15 | 20 | 0.072 | 500 | 0.41 | 1 : 1 |
MSD1278-183ML_ | 18 | 20 | 0.080 | 500 | 0.37 | 1 : 1 |
MSD1278-223ML_ | 22 | 20 | 0.096 | 500 | 0.41 | 1 : 1 |
MSD1278-273ML_ | 27 | 20 | 0.12 | 500 | 0.43 | 1 : 1 |
MSD1278-333ML_ | 33 | 20 | 0.15 | 500 | 0.56 | 1 : 1 |
MSD1278-393ML_ | 39 | 20 | 0.16 | 500 | 0.64 | 1 : 1 |
MSD1278-473ML_ | 47 | 20 | 0.18 | 500 | 0.70 | 1 : 1 |
MSD1278-563ML_ | 56 | 20 | 0.19 | 500 | 0.76 | 1 : 1 |
MSD1278-683ML_ | 68 | 20 | 0.21 | 500 | 0.88 | 1 : 1 |
MSD1278-823ML_ | 82 | 20 | 0.28 | 500 | 0.85 | 1 : 1 |
MSD1278-104ML_ | 100 | 20 | 0.30 | 500 | 0.90 | 1 : 1 |
MSD1278-124KL_ | 120 | 10 | 0.41 | 500 | 1.3 | 1 : 1 |
MSD1278-154KL_ | 150 | 10 | 0.46 | 500 | 1.5 | 1 : 1 |
MSD1278-184KL_ | 180 | 10 | 0.51 | 500 | 0.98 | 1 : 1 |
MSD1278-224KL_ | 220 | 10 | 0.69 | 500 | 1.5 | 1 : 1 |
MSD1278-274KL_ | 270 | 10 | 0.90 | 500 | 1.2 | 1 : 1 |
MSD1278-334KL_ | 330 | 10 | 1.0 | 500 | 4.1 | 1 : 1 |
MSD1278-394KL_ | 390 | 10 | 1.1 | 500 | 1.6 | 1 : 1 |
MSD1278-474KL_ | 470 | 10 | 1.4 | 500 | 0.25 | 1 : 1 |
MSD1278-564KL_ | 560 | 10 | 1.7 | 500 | 2.7 | 1 : 1 |
MSD1278-684KL_ | 680 | 10 | 2.3 | 500 | 2.1 | 1 : 1 |
MSD1278-824KL_ | 820 | 10 | 2.6 | 500 | 2.4 | 1 : 1 |
MSD1278-105KL_ | 1000 | 10 | 2.8 | 500 | 4.3 | 1 : 1 |
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) | |
---|---|---|---|---|---|---|---|---|---|
both windings 7 | one winding 8 | ||||||||
MSD1278-472ML_ | 4.7 | 20 | 0.038 | 32.0 | 0.98 | 0.22 | 14.9 | 3.2 | 4.5 |
MSD1278-562ML_ | 5.6 | 20 | 0.046 | 25.0 | 0.98 | 0.23 | 13.4 | 2.9 | 4.1 |
MSD1278-682ML_ | 6.8 | 20 | 0.048 | 24.0 | 0.98 | 0.22 | 13.1 | 2.8 | 4.0 |
MSD1278-822ML_ | 8.2 | 20 | 0.050 | 18.0 | 0.98 | 0.34 | 10.8 | 2.8 | 3.9 |
MSD1278-103ML_ | 10 | 20 | 0.058 | 16.5 | 0.98 | 0.34 | 10.5 | 2.6 | 3.6 |
MSD1278-123ML_ | 12 | 20 | 0.062 | 14.5 | 0.98 | 0.36 | 9.6 | 2.5 | 3.5 |
MSD1278-153ML_ | 15 | 20 | 0.072 | 11.8 | 0.99 | 0.41 | 9.1 | 2.3 | 3.3 |
MSD1278-183ML_ | 18 | 20 | 0.080 | 10.5 | 0.99 | 0.37 | 8.0 | 2.2 | 3.1 |
MSD1278-223ML_ | 22 | 20 | 0.096 | 9.0 | 0.99 | 0.41 | 6.8 | 2.0 | 2.8 |
MSD1278-273ML_ | 27 | 20 | 0.12 | 8.4 | 0.99 | 0.43 | 6.5 | 1.8 | 2.5 |
MSD1278-333ML_ | 33 | 20 | 0.15 | 7.6 | 0.99 | 0.56 | 5.6 | 1.6 | 2.3 |
MSD1278-393ML_ | 39 | 20 | 0.16 | 6.5 | 0.99 | 0.64 | 5.5 | 1.5 | 2.2 |
MSD1278-473ML_ | 47 | 20 | 0.18 | 6.0 | 0.99 | 0.70 | 5.2 | 1.5 | 2.1 |
MSD1278-563ML_ | 56 | 20 | 0.19 | 5.6 | 0.99 | 0.76 | 4.5 | 1.4 | 2.0 |
MSD1278-683ML_ | 68 | 20 | 0.21 | 5.0 | 0.99 | 0.88 | 4.1 | 1.4 | 1.9 |
MSD1278-823ML_ | 82 | 20 | 0.28 | 4.1 | 0.99 | 0.85 | 3.8 | 1.2 | 1.7 |
MSD1278-104ML_ | 100 | 20 | 0.30 | 3.6 | >0.99 | 0.90 | 3.4 | 1.1 | 1.6 |
MSD1278-124KL_ | 120 | 10 | 0.41 | 3.2 | 0.99 | 1.3 | 3.2 | 0.96 | 1.4 |
MSD1278-154KL_ | 150 | 10 | 0.46 | 3.0 | >0.99 | 1.5 | 2.8 | 0.91 | 1.3 |
MSD1278-184KL_ | 180 | 10 | 0.51 | 2.7 | >0.99 | 0.98 | 2.5 | 0.86 | 1.2 |
MSD1278-224KL_ | 220 | 10 | 0.69 | 2.5 | >0.99 | 1.5 | 2.3 | 0.74 | 1.1 |
MSD1278-274KL_ | 270 | 10 | 0.90 | 2.1 | >0.99 | 1.2 | 2.1 | 0.65 | 0.92 |
MSD1278-334KL_ | 330 | 10 | 1.0 | 2.0 | 0.99 | 4.1 | 1.9 | 0.61 | 0.86 |
MSD1278-394KL_ | 390 | 10 | 1.1 | 1.8 | >0.99 | 1.6 | 1.7 | 0.58 | 0.82 |
MSD1278-474KL_ | 470 | 10 | 1.4 | 1.6 | >0.99 | 0.25 | 1.6 | 0.50 | 0.70 |
MSD1278-564KL_ | 560 | 10 | 1.7 | 1.5 | >0.99 | 2.7 | 1.5 | 0.47 | 0.67 |
MSD1278-684KL_ | 680 | 10 | 2.3 | 1.4 | >0.99 | 2.1 | 1.3 | 0.41 | 0.58 |
MSD1278-824KL_ | 820 | 10 | 2.6 | 1.3 | >0.99 | 2.4 | 1.2 | 0.39 | 0.55 |
MSD1278-105KL_ | 1000 | 10 | 2.8 | 1.1 | >0.99 | 4.3 | 1.1 | 0.37 | 0.52 |
Parts per reel | Reel dimensions (mm) | Tape dimensions (mm) | Orientation | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
13" (330 mm) | A | B | C | D | E | W | P | Po | P1 | H | T | |
500 | 330 | 100 | 13 | 30,4 | 24,4 | 24 | 16 | 4 | 2 | 8,7 | 0,5 |