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77 Material Data Sheet

A MnZn ferrite for use in a wide range of high and low flux density inductive designs for frequencies up to 100 kHz.

Available in 77 material:

Pot Cores

E&I Cores

U Cores

Rods

Toroids

Bobbins

77 Material Characteristics
Property Unit Symbol Value
Initial Permeability @ B < 10 gauss µi 2000
Flux Density @ Field Strength Gauss
Oersted
B
H
5100
5
Residual Flux Density Gauss Br 1800
Coercive Force Oersted Hc 0.25
Loss Factor @ Frequency 10 -6
MHz
Tan δ/ µi 15
0.1
Temperature Coefficient of Initial Permeability (20 -70°C) %/°C 0.7
Curie Temperature °C Tc >200
Resistivity ohm-cm ρ 100

**** 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.