W Material

W material is a high permeability material used for EMI/RMI suppression, common mode chokes, pulse and broadband transformers. Available in shapes and toroids.

Initial Perm (10 kHz) 10,000 ± 30%
Saturation Flux Density (3,900 G at 15 Oe, 25°C) 390 mT, 11.9 A•T/cm
Curie Temperature 135°C
Maximum Usable Frequency (50% roll-off)  ≤0.5 MHz 
Relative Loss Factor (tan δ/µiac) X10-6, 25°C  <7 (10 kHz) 
Remanence (800 G, 25°C)   80 mT 
Resistivity   0.1 Ω-m
Density  4.9 g/cm

PERMEABILITY vs. TEMPERATURE

WMatPermVsTemp.jpg

PERMEABILITY vs. FREQUENCY

WMatPermVsFreq.jpg

PERMEABILITY vs. DC BIAS

WMatPermVsDCBias.jpg