LC series cores
The standard range of nanocrystalline LC series cores made of NANOPERM® material has been developed specifically to create compact common-mode chokes. The using of LC cores in common mode chokes has several advantages over ferrites.
The main advantages: A sufficient reduction of dimensions, weight and a higher operating temperature range, good stability of characteristics. A detailed review is represented at following web-page .
The comparance of dimensions of chokes based on nanocrystalline cores and the same one based on ferrites:
Dimensions
Size types of LC cores with permeability 30 000 produced by Magnetec.
| Type | Core's size od x id x h [мм] |
Size in a protective case OD x ID x H [mm] |
Lfe [sm] |
Afe [sm²] |
Al @ 10kHz [μH] |
Standard package [pcs] |
| M-306 | 16 x 11 x 5 | 18,4 x 8,6 x 7,0 | 4,19 | 0,1 | 5,9 - 11,8 | 990 |
| M-307 | 20 x 15 x 5 | 22,4 x 12,6 x 7,5 | 5,46 | 0,1 | 4,5 - 9,1 | 675 |
| M-308 | 25 x 20 x 5 | 27,7 x 17,1 x 7,5 | 7,04 | 0,1 | 3,5 - 7,0 | 567 |
| M-309 | 30 x 25 x 5 | 32,7 x 22,0 x 7,5 | 8,62 | 0,1 | 2,8 - 5,7 | 315 |
| M-310 | 40 x 35 x 5 | 42,5 x 31,8 x 7,5 | 11,8 | 0,1 | 2,1 - 4,2 | 216 |
| M-333 | 50 x 45 x 5 | 52,2 x 41,8 x 7,5 | 14,9 | 0,1 | 1,6 - 3,3 | 135 |
| M-334 | 60 x 55 x 5 | 62,0 x 51,6 x 7,5 | 17,7 | 0,1 | 1,3 - 2,8 | 100 |
| M-335 | 70 x 65 x 5 | 72,0 x 61,4 x 7,5 | 21,2 | 0,1 | 1,1 - 2,3 | 80 |
Size types of LC cores with permeability 90 000 produced by Magnetec.
| Type | Core's size od x id x h [мм] |
Size in a protective case OD x ID x H [mm] |
Lfe [sm] |
Afe [sm²] |
Al @ 10kHz [μH] |
Standard package [pcs] |
| M-606 | 16 x 11 x 5 | 18,4 x 8,6 x 7,0 | 4,14 | 0,1 | 18,4 - 36,8 | 990 |
| M-607 | 20 x 15 x 5 | 22,4 x 12,6 x 7,5 | 5,39 | 0,1 | 14,1 - 28,3 | 675 |
| M-608 | 25 x 20 x 5 | 27,7 x 17,1 x 7,5 | 6,95 | 0,1 | 11 - 21,9 | 567 |
| M-609 | 30 x 25 x 5 | 32,7 x 22,0 x 7,5 | 8,49 | 0,1 | 9,1 - 18 | 315 |
| M-610 | 40 x 35 x 5 | 42,5 x 31,8 x 7,5 | 11,6 | 0,1 | 6,3 - 12,5 | 216 |
| M-633 | 50 x 45 x 5 | 52,2 x 41,8 x 7,5 | 14,91 | 0,1 | 4,58 - 9,14 | 135 |
| M-634 | 60 x 55 x 5 | 62,0 x 51,6 x 7,5 | 17,74 | 0,1 | 4,3 - 8,6 | 90 |
| M-635 | 70 x 65 x 5 | 72,0 x 61,4 x 7,5 | 20,83 | 0,1 | 3,6 - 7,3 | 72 |
Cores are produced in a plastic protective case (С type).
The examples of common-mode chokes development
Examples of recommended options for developing common mode chokes based on nanocrystalline LC cores.
| Operating current* [A] |
- | M-306 | M-307 | M-308 | M-309 | M-310 | M-333 | M-334 | M-335 |
| 2 | N: dcu [mm]: Lnom [mH]: |
50 0,4 2 x 22 |
79 0,5 2 x 40 |
116 0,5 2 x 67 |
168 0,6 2 x 115 |
265 0,7 2 x 210 |
- | - | - |
| 4 | N: dcu [mm]: Lnom [mH]: |
27 0,6 2 x 6,0 |
42 0,7 2 x 11 |
62 0,8 2 x 19 |
79 0,8 2 x 25 |
130 1,0 2 x 50 |
178 1,0 2 x 75 |
215 1,12 2 x 90 |
- |
| 6 | N: dcu [mm]: Lnom [mH]: |
18 0,7 2 x 2,5 |
28 0,8 2 x 5,0 |
42 0,9 2 x 8,8 |
59 1,0 2 x 14 |
86 1,24 2 x 22 |
113 1,4 2 x 30 |
160 1,4 2 x 50 |
189 1,6** 2 x 59 |
| 8 | N: dcu [mm]: Lnom [mH]: |
13 0,8 2 x 1,4 |
20 1,0 2 x 2,5 |
31 1,12 2 x 4,8 |
42 1,12 2 x 7,0 |
66 1,4 2 x 13 |
92 1,4 2 x 20 |
116 1,6** 2 x 26 |
145 1,8** 2 x 35 |
| 10 | N: dcu [mm]: Lnom [mH]: |
- | 16 1,12 2 x 1,5 |
25 1,24 2 x 3,0 |
32 1,24 2 x 4,0 |
50 1,4 2 x 7,5 |
75 1,6** 2 x 13 |
88 1,8** 2 x 15 |
115 2,0** 2 x 22 |
| 12 | N: dcu [mm]: Lnom [mH]: |
- | - | 20 1,4 2 x 2,0 |
28 1,4 2 x 3,0 |
45 1,6** 2 x 6,0 |
65 1,8** 2 x 10 |
75 1,8** 2 x 11 |
92 2,0** 2 x 14 |
| 14 | N: dcu [mm]: Lnom [mH]: |
- | - | - | 25 1,6** 2 x 2,5 |
41 1,8** 2 x 5,0 |
53 2,0** 2 x 6,5 |
68 2,0** 2 x 9,0 |
85 2,0** 2 x 12 |
| 16 | N: dcu [mm]: Lnom [mH]: |
- | - | - | 20 1,6** 2 x 1,5 |
30 1,8** 2 x 2,7 |
45 2,0** 2 x 4,8 |
58 2,2** 2 x 6,5 |
74 2,2** 2 x 9,0 |
* — The specified value of the operating current corresponds to the common mode choke version without forced cooling.
Notation used:
N — number of winding turns;
dcu — a diameter of cross-section of a copper wire (the using of the blend is recommended)
Lnom — a nominal value of
common mode choke windings inductance