TAK Technology
T05
HIGH-PERMEABILITY HIGH-FLUX FERRITE
T05 is a high-permeability high-flux MnZn ferrite with an initial permeability (μi) of 5000, a saturation flux density (Bs) of 450 mT at 25 °C (310 mT at 100 °C) and a Curie temperature above 150 °C. Within the high-permeability family it has the highest Bs and Curie temperature — 310 mT remains at 100 °C, more than 100 mT above T06/T12 — together with the lowest relative loss factor at 100 kHz in the family (below 6×10⁻⁶), a hysteresis constant ηB of 0.3×10⁻⁶/mT and a 100 °C coercivity (Hc) of 8 A/m, so it withstands the larger flux swing of pulse transformers while meeting the low-distortion requirement of signal transformers. Typical applications are wideband and pulse signal transformers, current transformers, gate-drive isolation transformers and mains-input common-mode chokes. Within the high-permeability family T05 is the general-purpose reference balancing temperature capability and Bs: T06/T07 (μi 6000/7000) are recommended where only inductance is required at very low flux, T10/T12 where the highest common-mode impedance is required, and E02 where resistivity and bandwidth take priority. A μi of 5000 is intermediate within the family; in exchange it offers the widest temperature and flux operating window.
Magnetic Characteristics
| Characteristic | Condition | 25 ℃ | 100 ℃ | Unit |
|---|---|---|---|---|
| Initial Permeability μiInitial Permeability μi | 100 kHz & <0.2 mT | 5000±25% | — | — |
| Saturation Flux Density BsSaturation Flux Density Bs | 1200 A/m 50 Hz | 450 | 310 | mT |
| Remanence BrRemanence Br | 1200 A/m 50 Hz | 120 | 90 | mT |
| Coercivity HcCoercivity Hc | 1200 A/m 50 Hz | 10 | 8 | A/m |
| Loss FactorLoss Factor | 100 kHz | <6 | — | 10⁻⁶ |
| Hysteresis Constant ηBHysteresis Constant ηB | 10 kHz 1.5-3.0 mT | 0.3 | — | 10⁻⁶/mT |
| Temperature Factor αfTemperature Factor αf | 100 kHz & <0.2 mT | <1.5 | — | 10⁻⁶ |
| Curie Temperature TcCurie Temperature Tc | 100 kHz & <0.2 mT | >150 | — | ℃ |
| Density DDensity D | Archimedes method | 4.9 | — | g/cm³ |
| Electrical Resistivity ρElectrical Resistivity ρ | DC Current | 1.0 | — | Ω·m |
Characteristic curves
Applications
| Application | Role | Band | Temperature |
|---|---|---|---|
| Pulse & gate-drive transformer | Alternative | ≤0.5 MHz | — |
| Wideband signal transformer / balun | First choice | ≤1.5 MHz | — |
| Current transformer | Alternative | ≤1.5 MHz | — |
| Common-mode choke / mains EMI filter | Alternative | ≤2 MHz | — |