31 Material® Data Sheet
A MZn ferrite designed specifically for EMI suppression applications from as low as 1 MHz up to 500 MHz. This material does not have the dimensional resonance limitations associated with conventional MZn ferrite materials.
Available in 31 Material®:
Round Cable EMI Suppression Cores
Round Cable Snap-Its
Flat Cable EMI Suppression Cores
Flat Cable Snap-Its
31 Material® Characteristics
| Property | Unit | Symbol | Value |
| Initial Permeability@B < 10 gauss | µi | 1500 | |
| Flux Density @ Field Strength | Gauss Oersted |
B H |
3600 5 |
| Residual Flux Density | Gauss | Br | 2600 |
| Coercive Force | Oersted | Hc | 0.34 |
| Loss Factor @ Frequency | 10 -6 MHz |
Tan δ/ µi | 20 0.1 |
| Temperature Coefficient of Initial Permeability (20 -70°C) | %/°C | 1.3 | |
| Curie Temperature | °C | Tc | >130 |
| Resistivity | Ω cm | ρ | 3000 |
**** Characteristic curves are measured on standard Toroids (18/10/6 mm) at 25°C and 10 kHz unless otherwise indicated. Impedance characteristics are measured on standard shield beads (3.5/1.3/6.0 mm) unless otherwise indicated.
Material Safety Data Sheet (MSDS)
Click here to download Complex Permeability vs. Frequency (CSV)
