To reduce inserting loss, to stabilize the electric characteristic for a long period and to facilitate assembling by using a heat resistant bond magnet, which specifies electric resistance or specifies the change of the irreversible demagnetization factor at the specified temperature with a permanent magnet.

An inductor element is constituted of magnetic cores 2 and 3 comprising EI soft magnetic material, a heat resistant bond magnet 1, which is arranged at the gap part of the magnetic cores, and a coil which is wound around the magnetic core. The heat resistant bond magnet 1 is manufactured by binding R-T-M-B-N based (R is one or more kinds of any of rare-earth elements including Y, and T is Fe or Fe, wherein a part is displaced into Co and/or Ni) magnetic powder with binder. Furthermore, the electric resistance of the heat resistant bond magnet 1 is set at 0.01-0.05 Ωcm, or the irreversible demagnetization-rate change from 0°C to 120°C is set within 2%. Furthermore, the 50 atom.% or more of the R component of the bond magnet is set to Sm, and the high coercive force is obtained. Furthermore, the average particle diameter of the magnetic power is set in the range of 10-120 μm.