MSC series
Toroidal cores of the MSC series with a distributed gap are made of a thin (18 ± 2 μm) amorphous iron-based AMAG202 ribbon. The distributed gap, obtained due to a special mode of thermomagnetic treatment, allows to obtain magnetic cores of minimum dimensions, helps to reduce losses, high manufacturability, and low cost.
With a high saturation induction (1.4 T) and a typical magnetic permeability of 290, magnetic cores have higher DC bias properties and require fewer winding turns compared to other competing materials such as ferrites, iron-based PMDs, sendast and permalloy. ...
MSC series small choke cores are a good solution for the implementation of miniature DC / DC converters for mobile devices, adapters, chargers, miniature car devices, hybrid integrated circuits, differential filter chokes, etc.
Dimensions and basic characteristics
MSC series
| Core name |
Dimensions * in container |
Aeff 2) (mm2) |
Leff 3) (mm) |
Veff 4) (mm3) |
m 5) (g) |
AL 6) (μH / turn2) ± 20% |
DCB 7) (A × turn) |
|
|---|---|---|---|---|---|---|---|---|
|
Low-profile cores in an aluminum container (μ = 280) * |
||||||||
| MSCL0510 |
|
4.7 - 1.9 - 1.4 (4.3 - 2.3 - 1.0) |
0.76 | 10.4 | 7.88 | 0.06 | 0.026 | 29.0 |
| MSCL0620 |  |
6.4 - 2.6 - 2.4 (6.0 - 3.0 - 2.0) |
2.28 | 14.1 | 32.2 | 0.24 | 0.058 | 39.6 |
| MSCL0715 | |
6.8 - 2.6 - 1.9 (6.4 - 3.0 - 1.5) |
1.94 | 14.8 | 28.6 | 0.21 | 0.047 | 41.3 |
| MSCL0725 | |
6.9 - 2.5 - 3.0 (6.4 - 3.0 - 2.5) |
3.23 | 14.8 | 47.7 | 0.35 | 0.079 | 41.3 |
| MSCL0815 | |
8.4 - 3.6 - 1.9 (8.0 - 4.0 - 1.5) |
2.28 | 18.8 | 42.96 | 0.31 | 0.043 | 52.8 |
| MSCL0830 | |
8.5 - 3.5 - 3.5 (8.0 - 4.0 - 3.0) |
4.6 | 18.8 | 85.9 | 0.63 | 0.087 | 52.6 |
| MSCL1020 | |
10.7 - 4.3 - 2.5 (10.0 - 5.0 - 2.0) |
3.8 | 23.6 | 89.5 | 0.65 | 0.058 | 65.9 |
| MSCL1030 | |
10.8 - 4.3 - 3.6 (10.0 - 5.0 - 3.0) |
5.7 | 23.6 | 134.2 | 0.98 | 0.087 | 65.9 |
|
In an aluminum container (μ = 290) * |
||||||||
| MSCL-12S-N | |
12.7 - 7.3 - 5.7 (12.0 - 8.0 - 5.0) |
7.60 | 31.4 | 238.6 | 1.74 | 0.088 | 87.9 |
| MSCL-15A-N | |
15.8 - 9.2 - 5.8 (15.0 - 10.0 - 5.0) |
9.50 | 39.3 | 372.9 | 2.72 | 0.088 | 109.9 |
| MSCL-15S-N | |
15.8 - 9.2 - 6.8 (15.0 - 10.0 - 6.0) |
11.4 | 39.3 | 447.4 | 3.27 | 0.105 | 109.9 |
| MSCL-18A-N | |
18.8 - 11.1 - 5.8 (18.0 - 12.0 - 5.0) |
11.4 | 47.1 | 536.9 | 3.92 | 0.088 | 131.9 |
| MSCL-18S-N | |
18.8 - 11.1 - 6.8 (18.0 - 12.0 - 6.0) |
13.7 | 47.1 | 644.3 | 4.70 | 0.105 | 131.9 |
| MSCL-20A-N | |
20.8 - 11.1 - 5.8 (20.0 - 12.0 - 5.0) |
15.2 | 50.2 | 763.6 | 5.58 | 0.110 | 140.7 |
| MSCL-20S-N | |
20.8 - 11.1 - 6.8 (20.0 - 12.0 - 6.0) |
18.2 | 50.2 | 916.4 | 6.69 | 0.132 | 140.7 |
|
In a plastic container (μ = 290) * |
||||||||
| MSCB-12S-N | |
14.2 - 6.4 - 6.5 (12.0 - 8.0 - 4.5) |
6.8 | 31.4 | 214.8 | 1.57 | 0.079 | 87.9 |
| MSCB-15A-N | |
16.9 - 10.0 - 6.5 (15.0 - 12.0 - 4.5) |
5.13 | 42.4 | 217.5 | 1.59 | 0.044 | 118.7 |
| MSCB-15S-N | |
16.9 - 8.0 - 6.5 (15.0 - 10.0 - 4.5) |
8.55 | 39.3 | 335.6 | 2.45 | 0.079 | 109.9 |
| MSCB-18S-N | |
20.0 - 10.2 - 6.6 (18.0 - 12.0 - 4.5) |
10.26 | 47.1 | 483.2 | 3.53 | 0.079 | 131.9 |
| MSCB-20A-N | |
22.7 - 10.2 - 10.3 (20.0 - 12.5 - 8.0) |
22.80 | 51.0 | 1163.4 | 8.49 | 0.163 | 142.9 |
|
Paint coated (μ = 290) * |
||||||||
| MSCP-12S-N | |
13.0 - 7.0 - 6.0 (12.0 - 8.0 - 5.0) |
7.60 | 31.4 | 238.6 | 1.74 | 0.088 | 87.9 |
| MSCP-15A-N | |
16.0 - 9.0 - 6.0 (15.0 - 10.0 - 5.0) |
9.50 | 39.3 | 372.9 | 2.72 | 0.088 | 109.9 |
| MSCP-15S-N | |
16.0 - 9.0 - 7.0 (15.0 - 10.0 - 6.0) |
11.4 | 39.3 | 447.4 | 3.27 | 0.105 | 109.9 |
| MSCP-18A-N | |
19.0 - 11.0 - 6.0 (18.0 - 12.0 - 5.0) |
11.4 | 47.1 | 536.9 | 3.92 | 0.088 | 131.9 |
| MSCP-18S-N | |
19.0 - 11.0 - 7.0 (18.0 - 12.0 - 6.0) |
13.7 | 47.1 | 644.3 | 4.70 | 0.105 | 131.9 |
| MSCP-20A-N | |
21.0 - 11.0 - 6.0 (20.0 - 12.0 - 5.0) |
15.2 | 50.2 | 763.6 | 5.58 | 0.110 | 140.7 |
| MSCP-20S-N | |
21.0 - 11.0 - 7.0 (20.0 - 12.0 - 6.0) |
18.2 | 50.2 | 916.4 | 6.69 | 0.132 | 140.7 |
Note:
- 1) Dimensions of the core in the container. Ext. dia. - Int. dia. - Height. Accuracy ± 0.2 mm.
- 2) Nominal effective cross-sectional area.
- 3) Nominal values of the magnetic center line length.
- 4) Nominal effective volume.
- 5) Nominal weight without container. Tolerance ± 10%.
- 6) Inductance factor. Rated at 100 kHz, lac × N = 20 mA and +25 °C.
- 7) Maximum magnetomotive force (ampere-turns).
- * Temperature range from –60 °C to +125 °C.
IMPORTANT: When using a wire with a diameter of more than 0.45 mm, in order to eliminate pressure on the magnetic material, we recommend using magnetic cores in a plastic container (MSCB).
Application
- Output chokes for switching power supplies
- Flyback transformers
- Input and output differential chokes
- Power inductors
- Chokes for AC / DC and DC / DC converters, adapters, chargers, mobile devices, etc.
- Car electronics
Advantages
- High saturation induction
- High operating temperature
- Significant reduction in component size
- Low losses
- Ability to work with higher bias current
- Fewer turns due to higher permeability
Additional parameters and characteristics
The main characteristics of the material used
- Material AMAG 202
- Ribbon thickness: 18 ± 2 microns
- Saturation induction, Вs (25 °C): 1,4 T
- Curie temperature, Tc: 420 °C
- Crystallization temperature: 530 °C
- Operating temperature range: –60 °C to +125 °C
- Density: 7.3 g/cm3
- Maximum magnetic bias field: 35 Oe (2800 A/m)
Design
The MSC series is available in three designs:
1. The coiled ribbon core is impregnated and placed in a protective aluminum foil container (MSCL). The container has an insulating coating (chemical phosphate oxidation), rounded edges and is designed for direct wrapping. Be careful when winding with thick wire. A thin-walled container is small, but does not guarantee protection against mechanical pressure on the tape, which leads to a decrease in magnetic characteristics.
2. Flame retardant plastic container (MSCB). A plastic container with a rigid structure and rounded edges provides reliable mechanical protection of the magnetic circuit from external influences while maintaining its properties, as well as the ability to apply winding with a large diameter wire.- 3. Coated with epoxy powder paint (MSCP).
Temperature range from –60 °C to +125 °C.
Recording example
MSСL(B,P)-12S-N, где:
- MS – MSTATOR;
- C – purpose (choke);
- L – aluminum container;
- B – plastic container;
- P – paint coating;
- 12 – outer diameter, mm;
- S – sectional designation;
- N – heat treatment without magnetic field.
