TAK Technology
M5E1
HIGH FREQUENCY STABLE MATERIALS
M5E1 is a NiZn ferrite with an initial permeability (μi) of approx. 15, a saturation flux density (Bs) of approx. 170 mT at 25 °C (165 mT at 100 °C) and a Curie temperature above 320 °C. The low permeability pushes the usable ceiling to the hundred-MHz class, holding low loss and high Q across 10–130 MHz; with a temperature coefficient of about 10×10⁻⁶/K and Tc above 320 °C, both frequency and temperature behaviour are very stable — suited to tuning-sensitive RF circuits. Typical uses are RF antenna-matching inductors, broadband EMI filters and mid/high-frequency RF transformers. In the high-frequency ladder (μi 10 → 250) M5E1 sits between V4F1 (approx. 10) and V2F1 (approx. 30): its ceiling is slightly below V4F1's, but its Q and matching stability are better — the first pick for VHF matching and filtering.
Magnetic Characteristics
| Characteristic | Condition | Value | Unit |
|---|---|---|---|
| μiInitial Permeability | 100 kHz & <0.2 mT | 15±25% | — |
| BsSaturation Flux Density | 3000 A/m · 25 ℃100 Hz | 170 | mT |
| BsSaturation Flux Density | 3000 A/m · 100 ℃100 Hz | 165 | mT |
| BrRemanence | 3000 A/m · 25 ℃100 Hz | 110 | mT |
| BrRemanence | 3000 A/m · 100 ℃100 Hz | 105 | mT |
| HcCoercivity | 3000 A/m · 25 ℃100 Hz | 1400 | A/m |
| HcCoercivity | 3000 A/m · 100 ℃100 Hz | 1380 | A/m |
| αμrTemperature coefficient of permeability | 20～60 ℃ | 10 | ×10⁻⁶/K |
| tanδ/μiRelative Loss Factor | 10 MHz & <0.2 mT | 400 | ×10⁻⁶ |
| tanδ/μiRelative Loss Factor | 50 MHz & <0.2 mT | 420 | ×10⁻⁶ |
| TcCurie Temp. | 100 kHz & <0.2 mT | >320 | ℃ |
| DDensity | Archimedes method | 4.9 | g/cm³ |
| ρVolume Resistivity | DC Current | 10⁷ | Ω·m |
Characteristic curves
Applications
| Application | Role | Band | Temperature |
|---|---|---|---|
| Wideband signal transformer / balun | Alternative | ≤50 MHz | — |
| Antenna rod / RFID / high-Q inductor | Alternative | 2–50 MHz | — |
| Low-μ tuning / HF resonance | Alternative | 2–50 MHz | — |