TAK Technology
Q1C1
HIGH FREQUENCY STABLE MATERIALS
Q1C1 is a NiZn ferrite with an initial permeability (μi) of approx. 250, a saturation flux density (Bs) of approx. 335 mT at 25 °C (240 mT at 100 °C) and a Curie temperature above 140 °C. It is the high-permeability end of the high-frequency family: a loss factor of only 35×10⁻⁶ at 0.5 MHz / 45×10⁻⁶ at 2.5 MHz is remarkably low for this permeability step, and the high inductance per turn favours miniaturisation. As an EMI-suppression material its normalized impedance is measured on an RH5×1.5×10 bead (curve on the next page). Typical uses are low-frequency EMI filters, RF tuning elements and compact power-module inductors. Against M63 (μi approx. 180, Tc >300 °C), Q1C1 offers higher inductance density at a clearly lower Curie temperature (>140 °C) — fall back to M63/M61 in harsh thermal environments; for compact room-temperature designs Q1C1 is the family's first choice.
Magnetic Characteristics
| Characteristic | Condition | Value | Unit |
|---|---|---|---|
| μiInitial Permeability | 100 kHz & <0.2 mT | 250±25% | — |
| BsSaturation Flux Density | 3000 A/m · 25 ℃100 Hz | 335 | mT |
| BsSaturation Flux Density | 3000 A/m · 100 ℃100 Hz | 240 | mT |
| BrRemanence | 3000 A/m · 25 ℃100 Hz | 200 | mT |
| BrRemanence | 3000 A/m · 100 ℃100 Hz | 130 | mT |
| HcCoercivity | 3000 A/m · 25 ℃100 Hz | 140 | A/m |
| HcCoercivity | 3000 A/m · 100 ℃100 Hz | 140 | A/m |
| αμrTemperature coefficient of permeability | 20～60 ℃ | 10 | ×10⁻⁶/K |
| tanδ/μiRelative Loss Factor | 0.5 MHz & <0.2 mT | 35 | ×10⁻⁶ |
| tanδ/μiRelative Loss Factor | 2.5 MHz & <0.2 mT | 45 | ×10⁻⁶ |
| TcCurie Temp. | 100 kHz & <0.2 mT | >140 | ℃ |
| DDensity | Archimedes method | 4.9 | g/cm³ |
| ρVolume Resistivity | DC Current | 10⁷ | Ω·m |
Characteristic curves
Applications
| Application | Role | Band | Temperature |
|---|---|---|---|
| Small-power HF transformer (low flux) | Alternative | 0.5–3.5 MHz | — |
| Wideband signal transformer / balun | First choice | ≤3.5 MHz | — |
| Antenna rod / RFID / high-Q inductor | First choice | 0.1–2.2 MHz | — |
| Low-μ tuning / HF resonance | First choice | 0.1–2.2 MHz | — |
| EMI bead / ring / cable sleeve | Alternative | 100–300 MHz | — |