The LM085 grade of 200°C-rated materials is an 85 permeability material developed for high bias, low acoustic noise applications (low magnetostriction). LM085 exhibits excellent loss characteristics from 1 kilohertz to beyond 1 megahertz. LM085 demonstrates a limited rise of amplitude permeability as compared to our other higher-permeability materials, exhibiting 155% of its initial permeability at 2500 Gauss. This limited increase in permeability is applicable in the design of inductors exposed to widely varying AC flux, can tolerate limited inductance swing, and require a higher-permeability material.

For DC-biased applications, LM085 maintains 90% of its initial permeability at 14 Oersted. If considered for wideband applications, the permeability versus frequency characteristic varies by less than 10% from DC to 100 megahertz. Saturation flux density is beyond 14,000 Gauss. Temperature coefficient of permeability is -451 ppm/°C.

The LM085 material grade is immediately available in select toroidal sizes and can be sampled in specific shapes upon request. Please contact Micrometals, Inc., at (714) 970-9400 for more information or to arrange for samples to be sent for your evaluation. T94-LM085 core is currently priced at $0.376 each at 1000 pieces and lead time for production quantities is typically 8 weeks. Prices are subject to revision, please contact the Micrometals Sales Department for current pricing.