TAK Technology
MG2
NI-MG-ZN MATERIALS
MG2 is a Ni-Mg-Zn ferrite with an initial permeability (μi) of approx. 300, a saturation flux density (Bs) of approx. 300 mT at 25 °C (190 mT at 100 °C) and a Curie temperature above 150 °C. It is the standard economy step of the Ni-Mg-Zn group: characteristics stay steady over the low-to-mid band with a loss factor of about 80×10⁻⁶ at 0.1 MHz — intended for cost-first volume parts where signal quality demands are modest. Typical uses are standard chokes, low-frequency filters, signal-line common-mode filters and low/mid-frequency transformers. Against MGB1 (μi approx. 350, Bs 380 mT, Tc >200 °C, one class lower in loss), MG2 trades property margin for a lower cost; upgrade to MGB1 for signal paths or hot environments, while MG2 fully serves plain low-cost, low-power duties.
Magnetic Characteristics
| Characteristic | Condition | Value | Unit |
|---|---|---|---|
| μiInitial Permeability | 100 kHz & <0.2 mT | 300±25% | — |
| BsSaturation Flux Density | 3000 A/m · 25 ℃100 Hz | 300 | mT |
| BsSaturation Flux Density | 3000 A/m · 100 ℃100 Hz | 190 | mT |
| BrRemanence | 3000 A/m · 25 ℃100 Hz | 175 | mT |
| BrRemanence | 3000 A/m · 100 ℃100 Hz | 85 | mT |
| HcCoercivity | 3000 A/m · 25 ℃100 Hz | 25 | A/m |
| HcCoercivity | 3000 A/m · 100 ℃100 Hz | 15 | A/m |
| αμrTemperature coefficient of permeability | 20～60 ℃ | 9 | ×10⁻⁶/K |
| tanδ/μiRelative Loss Factor | 0.1 MHz & <0.2 mT | 80 | ×10⁻⁶ |
| tanδ/μiRelative Loss Factor | 0.5 MHz & <0.2 mT | 70 | ×10⁻⁶ |
| TcCurie Temp. | 100 kHz & <0.2 mT | >150 | ℃ |
| DDensity | Archimedes method | 4.85 | g/cm³ |
| ρVolume Resistivity | DC Current | 10⁷ | Ω·m |
Characteristic curves
Applications
| Application | Role | Band | Temperature |
|---|---|---|---|
| Cost-effective inductor / EMI (Mg-based: Ni-Mg-Zn / Mg-Zn) | First choice | ≤2 MHz | — |